geology ontario

41014SEMI22 63.3412 LACKNER 010

oGEOLOGY AND M I H K R ALO G Y

TiJt.

Neczkar E.: A Preliminary General Petrographic Description ofthe Rock Types on the Property of Multi-Minerals Limited at Nemegos,Ontario , Kay 6 , 1954.

Department of Mines and Technical Surveys: A Mineralogical Study of Diamond Drill Core Representing Rock Type 4 from the Nemegos Property, January 28, 1955.

M 3. Department of Mines and Technical Surveys: A Mineralogical Study of Ore from the North Zone, (Anomaly No. 8) from Nemegos property. March 16, 1955.

Department of Mines and Technical Surveys: Preliminary Investigations on a Sample of Ore Containing Niobium from the Property of Multi- Minerals Limited, Nemegos, Ontario, September 30, 1955.

Department of Mines and Technical Surveys: A Mineralogical Study of Pyrochlore Ore from Orebody No. 8 of the Nemegos Property January 26, 1956.

Department of Mines and Technical Surveys: A Mineralogical Study of Carbonate-Type Pyrochlore Ore from the Nemegos Property, October 23, 1956. '.

7, Rowe, Robert B.i Niobium (Columbium) Deposits of Canada, Geol. Survey of Canada, Series No. 18, 1958 (pages 35-45)

8. Hodder, R.W.: Alkaline Rocks and Niobium Deposits near Nemegos, Ontario, Geol. Survey of Canada, Bulletin 70, 1961.

9. Parsons, G.E.: Niobium-Bearing Complexes, East of Lake Superior, Ontario, Department of Mines, 1961,

10. Scott, Steven D.: The System Magneiite-Fluorapatite-Water and its relation to Multi -Minerals No, 6 Orebody, Nemegos, Ont,, May 1963.

Heior, Knut: Mineralogical Examination of Ore Samples from Multi-Minerals Limited, November 25, 1954.

\Mi"t Hul4( -

aIS"

c

T*. 1 ""'T 'f -TTi .-: lo..'.-:.,..

on the

Property

o.f

MULTI lilNE^LS LBIITED

at

NJ5-CSGOS, ONTARIO

goo, Ont. 6, 1954.,

E. Necskar,

Note:

This report IP based only on single selected samples that v.'ere

available to the author and do not necessary represent the average of

each rook type*

l '

31;llMcn d ' xt n rn s ^/' ^ Roc' ; JVpc, L ; o

The following is a brief description of trie rock types as

observed in. thin sections and in core supples. All of the mnerals have

not b s on pos.itive.ly identified ;in ea eh t -pe r.ir.cc it was nearly impossible

to do so by sirij.lc optical riearts, and a shorta^-.? 0? trno and, equl; r.'.ent did

not permit the longer and nore definite tests. :''ej helene, orthoclase and

albite are very similar and arc practically indistinguishable in the finer

grained dark syenites. Hence y-.iall quantities of one of these minerals in

a rock con; osed essentially of another could not be readily recognized nor

could its percentage be easily estimated without nvuch ir.ore work than it

v;,as considered advisable to do at the tine of the examination, Kowsver,

the compositions of the rocks have been sufficiently .well determined for

t Vie purpose of relating and roug/O.y nam.ng each type. The rock types are 3

listed below from basic to alkaline, The percentage of each Mineral v/as

visually estimated. Unless otherwise noted, descriptions will apply to

minerals as they apt-ear In thin section.

TYFK 6B (D.H. C-l 471 1 )

(This core sample represents the naterial making up the irregular

biotite-rich concentrations found v.ithin the napheline syenite,)

Composition:

Pyroxene (Aegerine-Augite) ?6#Biotite 20#Magnetite 22Unidentified Ilineral A 2.^

Testure:

Medium grain size.

The pyroxene and biotite are intimately intergrown. Some of the

Mot i t e a; M-irs to be an ait oration frori pyroxene due to v.re?.k r.etan:prphisnv

i./'.^notlbo is :(M;r;rally r,-nclosed by }:yroxo::n titii has a reaction rim of

bro,:n'L:;h (^:-?iy t.-slnaral. This brov;nish rjiay rdiioral (xin'oiov.'n iain'ira3. A) has i

-

a very lov; birefringence ar-d doss not apreir to bo sphene "which it closely

resembles in ^ener-xl ap;:earanco and rrodo of occurrence, Furthermore, ths

r; d ne i*:! l is ve p-.- jleochroic in reddish brov.'n.

IILJijL ( D * H * it~24 G 202 1 )

Composition:

Pla;;ioelase(Albito or Oligoclase)? ,* (also possibly includ ing sera nepheline and orthoclase)

Fyroxsne (Aegerine-Augite) ' . 30^

Texture

Fine grain size,

Hetamorphisr;! has recr^/stallizsd the original ndnerals and dest

royed most of the igneous texture. Ths texture of type 4 is typically

metaraors hie v;ith augite surrounding larger grains (crystalloblast s of plag~

ioclase feldspar or to a far lesser extent intorgrovm with it in veil

forced sliort pri?w.'itic crystals.

( D * H ' R~21 G 375 f)

Composition:

Plagioclase (Albite or Oligoclase)?5p(also possibly includingsome nepheline and orthoclase)

Pyroxene (Aegerine-Augite) 25/S

Texture:

Mediura f*rain size.

The overall general ap. e trance is very sitailar to Type 4

that the grain siae is lo.rf;er and t'te rock contains less pyroxene.

TYi-B 8 (D. H. R-28 5 460 1 )

Comosition:

3(Alb-;.to or 01 i -ocO..-.use)f50;l(probably also irscludingso:p.s orthoclass and

,('uxtv.re:

Fine lurain r?.;;..?,

The rojik i-etainc so ie ignocx:s intrusive texture but is also

pai'W-y nst/ir'iori'hcijed. Orthoclase, feldspar a^s'^rs to havo bean introduced

In velra and pitcher. In all other rosjccts it resa.ibles IVje 3 except

for a Buller yyroironc conts.-.t and 3/j.ck of /.jneisuic structure. The igneo

us texture -'ay bo due .in part to ths introduced orthoclase since the rock

grades urdfornly into the av. :.ar:3nt vein n?itorial. Tils orthoclase often

fihovs twinning and cli^ht distortion due to straining of-the rock after

solidification. . ' .

TYPE J (D.H. 0-1 @ 470')

Composition:

30;t(also some Albite)Orthoclase

NephelineSodaliteBiotiteCancriniteSsrecite

Texture: - -

Coarse grain size.

fri;rarv jninerals; The rock has been only slightly

and the original igneous minerals and texture still remain. Crysteil faces

can be noted on son-.e of the grains. Nepheline most cormonly shows crystal

faces. Sodalite occurs as crystals enclosed by nepheline or orthoclase is

interstitial to the nepheline cryst?-ls and forms much of the background*

Biotite forrrs small irregular patches among the feldspar and nepheline

grains. -

Sgcondarj^ minerals; The orthoclase is slightly gray due to some

alteration to kaolin while the nepheline is generally distorted indicating

so::ie straining of the rocks after solidification.

TViE l (D.H. it-13 i3 445')

(Thin r.;-sc:;.ru.-n contained an unusually high amount of apatite) Apatite 90,o

2lyroxone (Aeêrino-Auîto Ihul.c'r-ntlfxed mineral B

*

Texture:

Hod ram grain size.

i'lone of the irlnarals ara intimately intargrown but rather- tho

grains are equidimensional and routed co that they can. bo easily and

cleanly separated, fro^ each other by crushing. This is further aided by

the loose coherence between minerals. Tho pyroxons in this rock is the

sam.3 vjriety as that found in the surrounding rocks,

TIES 2

Massive jnagnotito vras not examined.

T^FB ^ (D. H. R~31 108') Diabase dyke.

Compositions

Plagioclase (La.brador:i.te)OlivineAugiteBiotiteMagnetite 3J?

Texture:

The texture is typically diabasic with feldspar laths and grains

of olivine. The rock is definitely the youngest , as the nxinerals are all

very fresh looking and shot* no sign of metamorphism as in the syenites,

It is mirieralogically and chemical" y different from the syenite and bears

no genetic relation to them.

fUvidual Description of the Minerals .in the^Syenite and pcks;

The pyroxene is deep greon in longitudinal section n.nd slightly

brovinor in cross-seo' ions which show ;ôocl cyroxene cleavage. It arrears

to bo aegerinoflaufjite, t)je highly KOJ'JC us ib^r of the pyroxene gi'oup.

riaîpclaso foil ds; ars arc th^ veiy sodic ne;:ibar5 of t!iO placi

';;lao-:; uerica ~ olbits /piKM'."'1 ?.;/- and ol:l-;oolaGO or possibly u.id^rino in the

T-OTO b~.rdc :-.')c'.-.r l.l'ia Vyi-OK /i ";id 5. ;:o;ie of the- plagioclase feldspars Dhow

tv.lr.vi.n^ ari'5 t'r'rr:fo!.-o ai'o di.Cfi:;',;!U; t:; distinguish from orthoclase. Alter-

vtior: to kaolin :U. '.'cry slight, giving t-e f idd*;-3.1*3 a li^hi, râîsh

grhh jclê is yer,;- t;i.:;.d].-xr in t-.pj tararjco to j^laîoclaaa. It is

present an rock "ypes 7, 8, -I'.r.d. /(.a and. cossibly in Tyj.-es A ?avi 5 in tcudl

quantities,

êrheline is clearer in ay e-^.rrjioe than the fo3dsp?.rs. Jit is

present in iair3y largo quantity in Tjn/e 7 and appears to be present in

scxue of the darlcer rod's.

Sod?.litBj is blue in hand specinens and is surrounded by yellow

cancrinite, its characteristic alteration. product. The crystals appear to

bs faii*ly vdl formed as observed in t^.irl section. Sodalite is found only

in rock type 7. . ' .

Encrinite is generally seon as a yellow alteration ri:: around

sodalite in hand speciinens of rock 'i'ype 7. In thin section it resembles

muscovite but has wore vridely spaced cleavage along vwiich the mineral

breaks to fonn rectangular fragment s. Cancrinite cr -stals are oriented so

that their cleavage is perpendicular to the sxirface of the mineral fron

ivhich they are altering. Kany of tho encrinite grains have been bent and

broken.

Biotite is found in rock Types 7 and 6B. It is strongly pleoch

roic and deep brown in color. Some of tîe biotite irîy be lamprophyllite, a

mineral ver;/ similar to biotite,

ôrocite is a co;r. on alteration froî orthoclase in rock Type 7

alo.i3 fractures, grain boundaries, and to a lesser extent vrithin the grains.

intjTicd.îl'ig ^L Ij ; (por.r.ibly augite) occuix'a in sr:.a3.?i. ;'i\isni-

atic cry P t. o.l s v.'it,:' Mockiratyly 'ii'-;'n "rsliof and hi^h birofr:ln:-;:-;ncQ. It is

fl"

rff,

r

slightly brov/rd^i -TOT rin color and ir; fo:md bet.osn apatite grains in Rook

Tyje 1.

IiilJXil2tHl1 in rf) ck Tyre l occurs in grains vith rouch crystal out

linos. The m-.1 ^mt.ite is roughly banded vdth the apatite. In rock Trr.e 6B

the :r*.f',r!3tito apr ears to h'rvo solidified in place "with the oth^r rock cons~

tituents and h-ns a very irre.^u?.ar outlino.

/U-^tita is charaotsriz^d by coD.orloss eoiiidlmension-'X'. grains

vhich are nodeivitsly fractured. It "a,- r contain vrall forsned j^rroxene crys

tals w.t'iin ti'.s ^rrdns or pyroxsne and magnetite cr/stals, indenting the

dentj-fi'.^ raineral A is brovmish gray and forms an alteration.

rim around magnetite in i*ock 1^'pe 6B. It resembles sj.hene in reode of

occurrence bvit Jvs low birefringence and is very pleochroic in reddish

GONOLU9IQNS

The dark rock Tjrpes 4, 5, 8, and /ja are of the syenite farlly and

may ba grouped under the genera! tor^, ?lxx:esite which has the

subdivisions:

Nepheline monzonite Essexite Nepheline diorite

Nepheline gabbro

None of the syenitic rock tvpes aryear to be more basic than

nepheline diorite. To c3-assify the rocks into the various subdivisions

vould require a more intensive and extensive study of numerous specimens to

ascertain whether the composition of each t;-pe is sufficiently constant' to

vrarrant naming them on a minei'alo^.ical basis. -

T?ie follovang definite conclusions may bo derived from the

ir:l/, tv

3.. M3 rock t"] en fror; 4 to fi arc related on the bards of rniner-t

and c'^rnic^l s.v;dlaritioB. It iy not to bs assumed that they

Vnyeeysari.L.7 fora a complete differentiated series in place b'it nay be int-

rusicns fro:n a c oar on so-.ircs. Their structural relation can only by brought

out by mapping. The rooks Tyj:e 4 to C are all very sodic and are character

ised by sodic feldspars, sodic pyroxene, and nepheline. Type l also contains

traces of sodic pyroxene suggesting a relationship to the syenites. Hock

Type 3 is a diabase dyke and is not genetically related to the syenites,

2. The rock types grade from basic to alkali in the following

order: 68, 4? 5, S, 4a and 7.

3* The degree of luetamprphisra decreases from Type 4 to Type 7 in

the order 4, 5, S, 4a and 7. -

4. The number systsn is by far the most preferable method of

mailing the rocks since it takes into account physical as well as chemical

differences and other field criterial useful in identifying them. The

mineralogical characteristics noted in this report are intended as a general

guide.

i,toolo-*y ox' thy MfljTl 'iir.'iiALS l-roeertv

J •f.r-if-iM l 111T.1' ''''-' -

Up to tha present tiino, ond third of tho property ha,3 been

.-napped ôoilo'jica.lly on a scale of 200 ft, to tho inch. Old na.^nstcnotD

r.urVey liny s, spaced ;.t intervale) of 2CO and 400 ft. are boin^ ussd for

control, as vrsll as recently yurvcj-'ed cl:-'.iv. lines.

V;r\^v rn^r*n'/^ hU.^v J. '-/''^

The property is located in an area o.? napheline syenito of as yet

tmdstsrmir^d sisa or shays, prssxi;nably. surrounded by granite, fiocks other

than those directly related to the syenite are seciitaento, largely grav/acks,

v.1? d oh haVe been highly altered by syenitic ira.ter.ial* At least two separate

intrusions of syenite have been established. The first syenite, intrusion

is medium grained and contains from 5 to 10,'S feldspathoids. The second

intrusion is much coarser grained and contains from 20 to 50/S feldspathoids,

Mineralogic ally both syenites are related and ap; ear to have co.7.e f ror. the

saîe inagma source, ' "

Tiie first syenite intrusion toêthor vdth the sediments forms a

curved band about 2500 ft. v;ide with a stock-like body or ernbayiiisnt about

8000 ft. in diameter of coarse syenite (second intrusion) inside the curve

and a more extensive body of coarse syenite on the outside which dips under

the -band at 60 degrees.

The mineralization is of several different types. These types

are listed below in the order in vfoich they arc bs3.ievod to have bsen

deposit 3d. -

1. Apatite-magnetite with '".ore than 5:* other minerals,(Itatio of .-ar;r:etito to aj;".tite - ap;.roxir.:atoly l t 3

'i. ' : I'!a';netite-apat!.te v;.1t'i ?e'i? t'r.u'i 5.* other minerals.(ikitio of . i;;;;T-)tU,o to apatite ~ ap: rox.i;-.!atsly 4s l

'), Crystalline -^notite w. 3. colrabiun bearing Minerals.

4. Colu'-nbiii'a baarinr minor?.! w,

Minsr'ilia.itiori apf ears to be largely confined to voins and

lenticular bodies in fio first ar-s of sy-snits. Altoration halos of varying

widths Gurroiind the oro bod l os. The rock in those halos is the composition

of nepheline diorite and is the result of the addition of iron to the

normal syenite by the mineralising solutions. -

The apatite-magnetite oro of type l listed above is found in Ko.

3 and No. 4 anomalies. Its origin cannot as yet be postulated. The magne

tite-apatite ore of type 2 listed above is strongly suggestive of a taagnat-

ic intrusion.- Crystalline magnetite is g, hydrothermal vein deposit* The

veins occur generally in the first syenite intrusion which because of its

brittle nature fractured readily and provided numerous channels for the

magnetite bearing solutions. The deposition of nnpnotite was-followed by

injection of foldspathoidal notarial along the sarae fissures and then by

colurnbium bearing rsvlnorals wl^.ich also contain raro earths, (probabl:/ cerium)

A large part of the columbiun rninertilissation occurs \dthout the crystalline

magnetite as tiny seaws in the v;?ill rock and in the apatite-magnetite ore

bodies,

TOE ORB HIt'JSRALS -

The magnetite contains variable amounts of titanium, depending on

the type of deposit. The crystalline monetite veins have the highest

titanium-iron ratio and the apatite-magnetite bodies the lowest.

The apatite is the variety containing fluorine and also contains

a snail "uantity of thorium in che-nical combination.

"i\;o colunbiu". bearing ninoralK have been isolated but not as yet

j.-os:r.t:".v-;.'r- idevitifioci. At le:-.r;t one, a h^nor-.-.-ellovf j.iineral occurring in

e;--.--..!.- -.1;--- '-li -fitly i' i-.-l'l'.:r t'", m L s 'It c,r-!-;i:3 hat; baon tonivativoly identified.

3

as belonging to the pyrochlore f omily. Ths other is dark and has not as

yet boon identified. The jossibilit;- of the existence of other rdaorals

containing co.lur.brora and-or rare earthy lias not bs?n eliminated.

Tiff ST^iiT^ .\?:D iris ::i?ri::uT.izATiON

Viie Mineralisation occurred after t'.ie first .intrusion of syenix.e

aM bofoi-e the scjconcl* ,'here ir., hovrover, a suggestion that sor-.e nineral-

ization followed the second intrusion* The cola-nbiiua bearing r.dnorals in

particular rr.ay have at least part corse from the second intrusion.

E. Neczkar

Ont.Juna 25,

DEPARTMENT OF MINES AND TECHNICAL SURVEYS

MINES BRANCH

CANADA

Ottawa, January 28, 1955.

REPORT

of the

MINERAL DRESSING AND PROCESS METALLURGY DIVISION.

Interim M, D,, Test Report No. 710-ML..

A Mineralogical Study of Diamond Drill Core Representing Rock Type No. 4 from the Nemegos ( Ontario) Property

of Multi-Minerals Limited, Toronto, Ontario,

Note;This report relates essentially to

the samples as received. It shall not, noi* any correspondence connected therewith, be used in part or in full as publicity or advertising matter for tha sale of sharer, in any promotion.

{Copy Mo, f \ ,\

w

O T T A W A January 28, 1955.

R E P O R T

of tiie

MINERAL DRESSING AMD PROCESS METALLURGY DIVISION.

Interim M. D. Test Report No. 710-MJU

/' Mlrioral.ogice.1 Study of DiarnoTKl Drill Core Representing Rock Type No., 4 from ths Nemegos (Ontario) Property

of Multi-Minerals Limited,, Toronto, Ontario,-

'i!

introduction:

A sample bag containing several pounds of split diamond

drill corss was racer-fed at the Mine rag raphic Laboratory on Novera-

bar 29, 1.954, from MuTtti -Minerals Lamifce'd, i:;aitc 707^ &C5 Yotiê Street,-

Toronto l j On?:avto t T'hri accompanying infovrnaf.ion v/as as follows:/J :

SrirnaU ;.-;a.'.vay lô, ?, D, D, H, ?Io. R-K. Footasa 16-21,yô .- 7 'lo:"o occurs in

The property fvo;r. v'.uch :hese sarnia \v-~ ;i take s in

:vaSht and l-acUttor tc-.vr.:,hip3, r Nswcgos, in the Sudbury Minin

—•^—^•iJ.^.^'itX-^s occur"

report. This Marira raport.haa bean oranar^.-

E^ ty-

lu-.lins of Procedures

Six thin sections and five polished sections were

:;r microscopic examination by tranomittcd and reftected .light rcspec-

;v5Iy, Dome of the material was crushed, screened, and separated in-

diffcreat .mineralogic?.! fractiono^ Tha scpas-atiDn v/as effected by

:-.7.-ius of a Franta Xsoriynarsiic Separator az\d Hqixida of high '"specific -'

:r?,vity. The various fractions were examined in immersion oils und^-

:h.-: microscope, The pyrochlore concentrate obtained by the separation

orocedure was submitted to the Spsctrographic Laboratory for serri-

quantitative spectrographic analysis, Alpha-track exposures wsre m

ai ?o;nc of this noat e rial, X-ray diffraction v/aa of assistance in th*

.Lr.-.rificatiou of G onie of the rninarals, '

Tha rock corisists larval/ c: a faivly uniforrr, -;;.:- sr r.-rr -^x F

1&

a'y preij.iiii: in amîjJir acôuafcs include feldspar, calcite, biotite, pyr

rhotite;, i'iine.pAt^,, and pyrochlore,.

The pyrax.:;-!- i a clark gr^si, .-'Irp.ont blach, v/hî observediu

ha:ad speciirêa or crushed, Jn t,-.Jan3rnitts;d light un-i^r tb/5 microscope it

is pleochroic from green to ye3-low--green, Rsurattivft index and other

optical properties art? similar to thoss of taa aegerine-augitft variety of

pyrosor^* The grain sisc-s is varxablsj, attaining a raardmum diameter of

about half a millim

The nephe?dno in mass has a light pir-.k colour, but ia colour-*

Jass in thin- section. Moat of it is iiivergrov/n with the pyroxene and has

a similar grain sise, although there are some .largar patches of it. The.

n^pheHne; is quite unaltered in appearance but frequently contains fine~

grained i.ccJusions of other minerals* The coarse-grained portions of

this minsiâl îre frequently fractured,

The magnetite^ occu.ro aa irregular masses in the rock, ^ff.yy

ing in size from a fraction of a millirnetre to a aiae greater than

v/iUth of the diamonU drill core. The magnetite hs^J highly irregular

borders and iu intergrov/n wich the other xjnineralo, commonly contain

ing inclusions of the latter {Fig. 1). It is, tia addition, cut by narrow

gangue -f i He U fracture j.

The magnetitii is t raversed, throughout by narrow sub-par-

i|

ilmenite lamellae are usually less than l micron in diameter and form

?, rec';?*r'.^ul.ar netwo*1 !-; in the magnetite, T h s ji;?.d spar is of the potash

variety, -to \vhiti-: i,i the hand np^ci-nen, and occurs &K. patci\.iG in the r.epu-

ssljna-pyraxine rock s Thin sections show it to b's fi-equently clouded; this

i?, probably due to alteration. There is only a irdaor amount of calcite

present, and it is usually associated with the 'eldopar, A highly pleo

chroic ty;pa of Biotite is present in small amounts and tends to be as3o-*

ciated with the magnetite. Pyrrhotite occurs ao tiny veinlets cutting

across the other minerals,,

The W^Pc 2r-^ has a clear yellow to yellowiah-brown col

our, Tha grains are usually rounded s.nd very considerably in size,

Grains frovn 0 0 5 xnm, to O,. 005 rnni 0 in diameter were observed,, indi

cating a wide range in grain siz-w. Although the pyrochlore occurs as

individual disseminated grains or ae clusters (Fig, 3). it is iiaost com

mon as Gf.ringe.rs cutting across other nriinerals.. It is to bs found most

frequently in the coarse nepheline masses, although it does occur in

the other minerals as v/ovll., In sorne ii^stances the pyrochlore is local

ized in v/cjlU defined fracture aoaes in nepheline {Fig. 3).

In an atterapt to determine the composition of the pyrochlore,

a cor.cenv.ra.tc \vs.s madi'; ac mentioned, above uiidor "Ov.tline of Proce

dure", The 70' railliyrarn coricen'.vrat-.; tb.us obtained wan insufficient for

f^r.r-.phic analysis,, The; results a;re lis::ou in Tabl:; .1, (Column A con

tain.:; tlv* r. .'"S i '.lv s as cV;ternT'.ns;d spectrograph! c 31''.!^ TMe column, do s 3

rv::': ii-cûde .yi.Hcovt; a!iirr:i~iu.ni or sodium, tha .jri-icipa'i conutiiu-jats oX

n -paÎii-i'-jf, and. 'totals only 63. 14'}ci 0 .U is aâui^sjcl that by re-calculat

ing tha amounts to total lOO^j, the composition of a concentrate free

of nepheline can bs obtained, Column B gives the reoxilfcs of such a

calculation, J

TADJÊJ.

Nb205

Ta205U 3 O8Th02CaOMnOFe. 203

ZrQ2

TiO2JMgOCe205.La 2O5

Diao3

- Spsctrographic AnalysisConcentrate.

A

29, Oft

0. 983

170,151.9

0, 30

1,60. 250.80.19

0.05

63. 14

of Pyrochlore

B

46. Oft

J. .4.--13,6 .

4,727,00,23,0

.0.5

2,50.41.30.3

oa100,0

A: Results of spectrographic analysis,

B: Results of spectrographic analycis re-calculated to total 100*^,

As noted previouoly, the methods us ad in determining the

r:.:;r:\:;jogiiiori z ~^ s e:r!3-quaaiitative4 so jjr; ;at accuracy ca.nnot be clcdmed

;r -;r i.hor.:i : J A''/;/ r v.rr,. th;;y - ' ?~. .": tl.vt r i j.' ;. . ore] ;.- ^" ^n^riitud^., and 5;c:i'V,v

i 'li 01 L ssi.'ScT vie;

:pooAi2H 'K "H

'H

oo ooooocoo

OOOOOOOOOGOO

ptre sufeaS ps^cet s;e cu^s^dû s-t^ rfc Aoîxto ?uss3.T.d SL

-ujcu^'g'Q 03 4xmxt SOO'O W.OAJ) ^;c o j tp o;-: Ad /AO|.pA pourajS- .-

ût ^S^TJOO q^vA\ suaxo;{Ad pas autôijdsu pstitaoiS-Svitj jo Ayjpup s^sc

uoo îscdsp g "ojî A^/Aao^T 31^5 UIOAJ ptrccpji'ej&

^ ut stjusosopu-eout 05 8ut;tt2st{ "o st); xiopûSt a 3j"e A^tco u.to

x "^ Sutonpo.id ^pua-e.-jaur G t 3zo-Lx;too.tAd snjx

-csq? ^-p/qa Su:]3,tr?T.put 'ss

reiT} gsp-e.^.'} t.-u;cip

"CS

OKI.X fAtb' 04 ar^du-e eu.v-s.rL1 yae

-ciût^ Aq ps-.ât^-a-e^s

GL BUJX fpÂ.TSSCOtU.TOJT.tm ÔH Rt S .t

jo xioistsocvJ.xoo au^*c,;oua.".-:-.v5,tnj "S'jqt^God t: t :;v;

o -

l ^Jfel^ll^; ' V j

Polished section showing magnetite { white) with num erous inclusions of nepheline {clark grey) an'l pyroxene (mydium grey). The magnetite boi-dern are quite irregulaz*, A lev/ pyrochlore grains {light grcjy} can bs eeen in the mag-notite,,

.. B -

it

ii

Polished ssclion at high magnification shov/ing mag netite {medium grey) traversed by a rectangular network o.C ilmenite lamellae {dark gray), The dark oblique lines are poHr.h5.ng [scratches,

Photograph of polished section showing a cluster of pyrochlore grains {medium grey) in nepheline {da?k grey} c

- l o ~

i"" i ~ .-l*iii J --

-..'-•;-.^.--'-' f . "•''v

- ^- -e.-*"f-y*'•^:

Photograph of thin section showing pyrochlore grains { dark grey, high relief) in a fracture sone in nepheline {lightgrey).

Fi-, 5.

2OO Mf SH

AT : 5O *

Z5 60MICRONS

•*- -,'.*/- . t .V /' . ** " *' - *.,/ -' . l-;f "

ry:':'- ''-.^..' - *-

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' An alpha plate exposure of several pyrochlore Tine grain at the l a f t has produced .more alpha, tracks than th* one at the right 0 indicating a higher uranium content* Xn transmitted light the former v/ae obssrved to be darker ?.n colour than the one on the right*

M

*

DKPARTllU-JT OF liMiS ,\XI) TKCllHCAL SURVEYS

CANADA

Ottawa, Harch 16, 1955,

ft K P O R T

of the

niXHRAL DiUSSSING AND PROCESS METALLURGY DIVISION.

Interira H.p. Test Report No t

z. CD e.A Mineralogical Study of Oro from tHfr-N'off'bh ?oBO'-ef

the Nemegos (Ontario) I'roperly of Kulti-llinorals Limited, Toronto, Ontario.

rs s: a ta o st

E3 C3 ei

Note:

This report relates essentially to the sanplos as received,, It shall, not, nor any correspondence connected therewith, bo used in part or in full as publicity or advertising ratter for the s file of shares in any promotion.

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exo^rêd I'ndorthc binocular rdcroscops, ar.d r:^-;pl;-!G sho;?.i.ny ths various

foîci of mncralization x-erc solectod for : ;;ore i\itensivo study,, This

iiicluded tiio mci-oscopic examination o i" ?;cvc-n t'nin sootLons and nine

f polished sections, by transmitted and reflected light respectivelyj

f the identification of constituents by X~riiy povrder cliff raction techniques j;!Jir; - .

f ;and iiie preparation of autoradiographs t

f The crushed material- 'vas scrocnadj and the -150-5-200 mesh*!' : :

fraction vas selected for further study,, To simplify itlentificaticn ef

tiie various mnoral constituents,, iiiclwding those prese-rt in swall amounts P' '

the inijsorals t;ero cojticentratod by neans of Ufa-'?y îquitlc ar:tl a Frairts

Jsoclyi.msjic Separatox\, These, concentration methods aro based on differencesB ' ' ' - 'V

3,r, specific gravx'fcy Ojxl rnayietic cusccrptibiîty, rcop-2ctivo.lyw The con-- " '

atj.tuonts v/ero than identified, by thsir X-rt-j ;.* OdiTraction patLoi-ss and

tliSiir optical properties in imersion o:;.ls undez* tho r.-icro&Gope.

Sines it vae desired to obtain a. pyrochlore concentrate for

.ansdysiG,. tho follov,:ing procedure v-as followed: Clorici solution with a

dosjcity of 3 4 8 v;as used to concentrate ti-.s heavy pj.norals, vrlixch include

pyroc'tilorOj zircon f and metallic sulphides and oxides* The minerals of

iiif;'n-fria,"nctic sisscoptibility v.'oro thon rcr.ovad by freans of the Trant?.

isoclyii^/nic Separator, lcav":i.J3j{ a fraction containing pyroc'ilore f s;lroon,'

ar.d vrri.-^ * Tin? Ti-action vas furxôr tfc-iiru-.r'.e.d, us:i.-^ ';er,t3d Clerici-* -* " * J

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Alpha . track pxposuros wore na.d.3 of s-o^o of thy pyrochlore

using llforc! !J-.?, plate a.

Tho roc'k in general has a dense dark green sippoaraiico a Closer

exard.nat.ioa, however, shows that it consists of ckrlc, almost black,,

pyroxene intor^rovm with nepheline ? feldspar and varying proportions of

other rdncralSo

- - In thin section, two varieties of yyro:-:ens vsrs observed, The

r.ore abundant variety XK highly pleochroic fron grass grsen to yellow, srul

universal stage dotcjrninations indicate it to be aogerxne-^arigite* The

other variety is less highly coloured and non-plcochroic but, because cf

its higlily paltered condition, no definitive optical work could bo dona;

its X~rsy diffraction pattorT, y hovrever ? Kugijeots a soda^rich variety.- Ths

pyroxene is all fine-grained,, leas than ^ ran. in diapvete-r,

Ifegascopicalli7 s the ggph^lin^ is clear sM colourless with a

vitreous lustra Most of it is intergroxm with tha pyroxene and is of

comparable grain sizej, although soirie larger grains up to about 2 rrsac, in

diameter trorc observed 8 Some of the nepheline esSiibits varying degrees

of alteration, with the formation of sn^-^-lS* ^n SOIT.S of tiio more highly

j3.1torsd sraterialj all of the nepheline is replaced by this nineral, leaving

an intergrowth of pyroxene and analcito,, Tne lo. tier stinoral is white to

pink ii\ colour and v.'licro present in fairly larr;o m-isses f is soft and soapy

in loxturGo

^ profit chiefly an small grains intorgroifn vrith pyroxsns and, . ii[|

:'.:o'/.;-: r^roly fl as lar#3r phenocrysts* They vary ia colour i'roa* whits to

l,.;:at pi*,c ;md in *ua a-rowm sources *xnibx* a fina-g^noa ous^ , ,. L

alteration, Ths 210re abundant feldspar is a potash feldspar, but P:

aXbite-oligoclaaa :ls also presento

The f}?a'o. -t3 haa a clear, vitrsoua lustra and is light

ia colouru It is sc:r,ewhat ua3vonly distributed throughout the roclc and

\-s:'ios considerably in grain aisQ 0 White calcite, and a. dark, highly

pleochroic biotite occur sisjilarly 0 Buff-^coloured sircoa is fairly

widespread as snail grains and grain clusters j it fluorsscos faintly

tmcler short-vave ultraviolet radiation.

J.'he sulphides present isicludo g^rriiotits., gîte, eh

B^^Bî6^^' ^ "^ssa s pyrrhotite is by far ths rost abundant} a:

occurs as rounded grains arid irregular Kassss in the'gangue (Fig. l) o The

other stilphidss uere not observed in ary of ths polished ssotioxiSj but

liere identified ia the concentrates, '

llagnejdte is quite. abuadsat* In 502:9 of tlae rock fx-agpieats

it occurs only as subârigular to rounded grains amoag the gangue minerals

(Pig, 2 } t but where it is Eore abundant it forms irregular masses (Fig* l),

It is intimately ijatergrovn "with the gangue v the contacts between tho tt/o

fcsing highly irregular and iaterpanetrating, nith botii of them containing

- ir.elusions of ths other 0 The grain size is .extremely variablo, ranging

f:-.'C7.r; iaici"on sizo to -^r-inch particles, Tho magnetite contains jiuaerotis

ilrwn^te particlo3 s nostly in the fora of laiaerJla'a . These lâ^llae

:: - '-id'Lhn or^M to ^ nicrcn or Irssy (Fig, 'O , riv: MM'-aito nlso occij?:s ai?

re

Tlie WrJ^--5E~ kas a resinous lustre and ranges in colour

:frre'. light ysllo:? to roddish-brown, with the latter ii?ak.lng up tha greater

proportion,. Although grains up to 0 U 2 ssa. itv diameter ver-5 cbsarvsd,

the Kajority of tha pyrochlore is roach raore f.uie~graiaou, a^.d veosi

Troqusntly occurs aa grain clusters and stringers (Figs- 4 asid 5) in ths

ganji.vs j.tinsrals nepheline, feldspar, and calcita. The borders of th-3

ToItustsz'S and stringers are extremely irregular, as can be seen from ths

-photographs.

Ths X-ray diffraction patterns of the yellow and.brown pyro~

chlore Eire quite siroilar, but are slightly different frosi thos^ obtained

froa the pyrochlore of Rock Type No, 4 {described in Intorisi H. B* Test

Report No 8 710~ML) 0 The latter pattern has its stro*igast IVJQS at 3 0OoS t

VThile: in the formex' this line is oplit into t"jo s st 3 S04A and 3 0OQa v ?ha

sigi'dfiftaa;^ of this is not yet Jaio\rn s but it K'^y 'senrs to distinguish the

pyroehlores from the different deposits,' A further difference As that

uh-2reas tha l?oO: Typs Ko. 4 pyrochlore gave aa X-r?y pattern only after

igni-tioa^ the North Z-oae pyrochlore produced a waak pattern without

ignition.

Attempts were raad-3 to obtain autoradiographa of the JPQ/TO- .

ch'Ltre-contaim.ng rock, This involves placing a flat surface of tlie rock

in contact tdth ?. sensitive fdJ^n for E. prolonged period of titse, period.tting

tho radioactive euiasiations to blacken tiio f i Ira, If successful Y thies enables

th-2 radioactive mineral to bs found Ki'l;h ease by comparing the rock end ths

?u -;:rra0.iogr?.ph, AttOiiwts to obtain au to /adlo^rapha were unsuccessful, even

.i : . r- 4 cUyr, ! :Ji'.pr..:'.;:.-f: r/ro-^.l'''.;/ ''-'; 'ic '. .; ;;r^ll ,\v.-.fj.'it of ' x-'Jio.io^OY.ivilr1/ :L:i

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A comparison of those results vith thons obtained from tha

pyrochlore t'escribad in Jnteria H, D.. Test Report No, 710-411. indicates

that tho JTorth Zona pyrochlore conturas nore iron, but 6?ppr--'oir-.bly losa

uranium, thorium avid ceriura, than th.3 Roc/c Type No. 4 pyro chlcra , This

oli'forenca in composition iray account for iha diffsr-anoa in the X-ray

atterns dog c rib ed abovs.

The icost abundant 5jainsj*als in the North Zone r;',aterial are:

pyro:sBaa, feld3par f nepheline and ;.tt?.g2.etitv2 0 Minerals occurring in

srrallsr amounts jjiclude ilroe-nit-Oj pyrrhotite , pyrite, chaS.oopyritQj

aphcle rite , apatite, E:Li"con ( calcite, biotite?, analcite, ancl pyrochlore,

Ore dressing methods hold very little promise for the con~

centration of ths valuable constituents of this Eiateriaio Much of fee

pyrochlore is fine-grained, and the grain borders are 80 irregular that

a high degree of freedom cam be obtained only by oxtrenaly fine grinding e

The jsechanical separation of ilKanite and aagnatite is practically

impossible because of their fin-s-gx'eined intorgrotf th , aad even the cleau .

aeparatioa of these winsrals from the gangue can probably not bs accomp

lished at coarse grinds because of the irrega3.ar.lty of the grain' boundaries.

Approved?K. H 0 Nickel

K. aycock,Section stead.

•i1!

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V.

9

Split Core Sample

for^^^^

I m Department of Mines,

Division of Mineral Dressing and Process Metallurgy.

Sample Ho^ No, Feet Cb2 05 Assay

i'

8235 ' )8236 - l Haft V8237 " (8238 " -\8229 - Q -e M I/CO./8231 " J 0fiOO'S /O G O "} *. - X" Of.4,y / -C ~ S K f i/- O i/

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45'46'37'62'58'21'46'46'36'62'47'70'79'93'48'

108'99'88'40'29 '25'33'35'43'42' 25' 62'65'331 29'22'70'70' 70'59'68'35'72'50'30'28'18'29'6'

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127

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3118

.92

DBPARTKBKT OP MINES AND TSCHtflCAL SURVEYS

MINES BRANCH

CANADA

Ottawa,, Sep'cecjaor; 30, 1055,

R E P O R

of tbo

MINERAL DRESSIM G AND

Mo Do Tost Report No. 7G5-OD

Preliminary Invoafclgations on a Sainplo of 02*0 Containing Niobluw from the Property of Mtilti Klnorals

Ontsrio 0

Jloto :"

report rolatos osoonfe-lally to tho samples as recoivoc! 0 l" t ah a XX nptp nor* any correspondonco con-iootcd. tiiorcv/ithp bo uaod in part or in full no publicity or advertising tea t tor for. the salo of share e in any promotion,

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vpoaoa^ y/ac ba^ccU A small portion of tlio iioad ecay^o

bmitted to tho Spse-tro^r-apl-iie Laboivefcory for o;;awlaat.dlo

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copparp

Iron (total)

Insoluble

X o SI po

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37*52 " tt

.M^sr^^^^-vi^M^-^it'^9^ gPour polished eootiona VSQPQ prepared fporo tho aample

and -wore examined under a raines c cpo in ordox* to study tlio

Citeristicss o:f tho oro,, all mineral idontificationa

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JLJaxtp c:i at'cosipfc v/an ir.:,do to r.'oracv0 two os? tiix'oo o;? tho largo? pa^'ciclGs; of Olio unlcviv'./n ininoral foi\ i&iifcion I'iOiV

taicias an X-^ay photo^uphc. Kov/ovoi*^ duo to the omaXl grain

eii;oa ft tho Gt1;empt failed and the l&onfcity o.C this Tr.inoiv.1. romains

r-—-

iL.

•irli;r*L.r—

2.5 CK

-ir - - f

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J

3.5CK

Tiny inclusions of uaknovai minoraX 0,S.ghfc grey) in ganguo (darlcox* groy}^ hore largely nophollno| note minuto

Inclusion of gangue in the largest particle of fcho unlcnov/n ralnoraXj polishing pita and

s c ra t oho o arc block and fcho v/h i to square is a-200-Tylor rr.osh acroon

of r; of ?c 5

6

7

8

9

X O

1000 gi'iiiaa oro at rainue. !f,CO niati run thrrouga Pit via. tubo 0 v/as supsrpannod for K&sO-j

Saras procedure as toot Ho* 0 0

Same propodus?© 0

Sauio procedure at ciinuo 300 jaesho

procoduro at minus G S mo

57,9

61 4

63,

o*/o^ {

85,

I7Q "ST t v'nO

87

jPon^l^sô^J^^riL^M^^^S^ s

'iosts eondiKjtodjj Q gînd of rainvia 3.00 r.-osa

v/ould apps a r to r.voo the pyrcoli'.loiTo iVo;u the r.iasôtloO and givo

'oho bo s t Gvoi?a.lX yoouXta iv\ inasnotio doncontration*

jCn to e ft K o o ^ who ma gao tic oonoontra fco asaayocl 61,,-O

jior cont iron tind 0{,2o ps;.? opnt KbgOgpV/ith tho FO205 c on ton ft

being incroasod to 1 0 83 in tho tailing,' Kio v;oighfc of tho

magnetic conoontrafco tvas 44 0 Q .poi* cent of tiiO'ore 0 Slboao

v/ovo practically duplicated in tost Ko n 7 lvl tho aiagi,iot5.ci

trot ion pr-ocodiu'-o of tho tost, ' ,-

Kiiti pa s? t of tho to s-1 \vo^k mifjit bo rogardod aa7

reasonably succoesfuX ancl v/oula hold sosio pi-omiso,.

Kowovox*,, tho attorapts to concentrate tho pyrochloro

o on ti. i HGU in the tailJ.n-5 fro;.! tho ;.ur.ôtic concentration

pX'OCCduVO V-.T;;;' ;:5 not at aXj. 3V,VCiyB2iful, IToithCiX" a gOGCL f.I'.li'l^.SW

recovery of tho riio",rJav.: coit'ul bo obtiiiacci t-y gravity concouv;;.-.;

3V,e3" o

•* YO our

S'St !;90C3 O** 90;SG "^S S Sum w, c-qr.Q.5

"ouoo oqno,

:TJ SxTfsôdOtX t?*1

0*e pttU tt'

0Oi"O OT^C, V-

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v[^ '.so ,2 j 1:003

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" X O "*

ICO gvavr.3 o* ox"o v/as gr-ovinu to ninus 48 rusah e

run th^o-agb too Davis tut o in a oiirnS.Xax' rcsuiAep as in fcoafc

l? O o le,

.o? 0,'osft HO?

Davis tubo cone,

Davis tub

Head

55 0 6

A;T, s a y 3i "o

l 'F ll O oc2 GO e O l 2 (,33j' |!

1.87 i 7,,0 (87*58

BictaS.fev.toiL 03

rRQ o ? "j c1 P, t cw sLJsJnV'; A'v*)*-'a *-- ' :'*-*f __ _J^^__________^M^^,,___,~,r~-.,,. • u.ir....^.-.^,-____,——^v——. ,_________jr.. •-ll^.... ^,. ___^^rv^^——w.

l X00,0 j lni8|30o55S38,5 JxOO.okoOr.OS ICO,,Oi^ ^^ - , ... . ^ ^^, j L. ^-- -______ i' ^^L^. ___ ** P J* .

XOO gramo of tule ore-vras crushed -to jalrasa 6S woa2i a:i

l-a the Payls tubOr,

Result D of. Toa't,

pox*

Dsvits. tube ooiaco

Davle'fcubo fcaiIS.ng j 53 0 O

Koafi ] lCOoO X

T- li i! 11 f Jl ^ 0"ij "^

X3,.8!j 07.0

SssXoO 57*SelOO,QXCO*Q,\GO,0__ .1 --'jj.ui.. ri, i M .. . "—— - __ V-

100 cosine or t,ho o^o sample wss ground to

an\i concentrated, in tha Davio tv.bo n

Pa via tub© -cono, f 44*0ij

Da vis tubo tailing S 55,0 X o63 J 7,2 167, COlii:

Head 100,0

D;ls fc^ibw. v ion|wwmJ^'?Ji.J52S?'____j^^-^J^JL-.1'-^:^ .^^ n jjijtfgOjjJ! i?N3 JXusoXt-J-'bgOajj X;5o jjjCr.cK'!'

•v•^ t\

j is.oft !{.—— ,

100 gx'auis of ohu ox'3 aaraplo v/as ground to iai*wa

and oonoonti^tod lu.tho Davis tubo 0

ooiafcn of

Davis

Head

r Assays Bo?.

jjjpGi* ooafe jWogOg jPlt'''©Po.'? wfino

r

riy tulio tailii'A 1 i

a A "0^*Mr*^****r!j*.l *i

' JN. t^ f\ it t

G O,, O

O

,..i I*

*s '4 ^* t** Jl * T ^\o53 |sio8 jtXOoS |; 3.9 O l 67^'l IS,O

l' V *"* IV i! f* *** 'Zl; )sv* Or f OO , O oX se, o (i en, o

2?.?iJL2l?,j.J5

100 sraiua of tJao or'O y.T.uplo vras groimti to irdyivss 2.CO

luoeli and concentrated In two Davio tub Q fox* Biagnotio ar::l ncr.-*

ina gno t i o pi* cdu c t s 0

Tho non-wisgaotic pox'-fcion of tho sarap3.o p containing tlso

Miajoi? pa x* t of tvio pyrochlore v;as conocnti*atod on. tho svip-si'jpavuioj

in an oncioavoup to mako a satisfactory rcoovoi'y and grafio of tljc

Pavis tubo c;onc, tl3rp3BXwo5i* c on e o Ai toiling ij

—————^————.,, Eood S

6?

4 0 V

|, .,..^. .?3.i,,.-,-^2)X*t prb^0;5?""ij'o""'""

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74,92

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1'ho conditions of tlixa to a i; and the pi'ocedio'e v/oro

sanio ujy t h o procGdiiig oTiG ^ o;:cop!; t;ia fc iao)?o accent v;as placed

upon recovery of 'cho nick i wu in 'cho supsrpaxmiag op3.vaw5.oxx 0

RosuXfco of Tost Ko 0 vli

Dav'.o tub o cone

Suporpannex' cone

17 tailing 20oO

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h ** v **^ **

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biavi s7.*e^-|ioo0 oSxoOoOJ 100,0l! if - H i! i'

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Otta'.va 0 January 26 9 1955*

REPORT

of the

MINERAL DRESSING AND PROCESS M21V5JQLURGY DIVISION

Investigation Ho* MD311S

A Minaraloglcal Study of Pyrochlore OJ?Q fr-ora Orobody Jjo 0 8 of tho Nemegoa (Ontario) t

Proparty of Multl-MInarala Ll3siJ.tod, Toronto p

Noto:Thia report relates essentially

to the samples aa received* It shall not, nor any correspondence connected thersxvi fch ? ba usad In part or in full aa publicity or advertising matter for the 3nlo of shares in any pro motion,, " ' -

o? r*COOQ

(P.

COto osHCO Ci^3

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01

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LLXJHGY DIVISION.

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vilu:;?alog;!.c?.l otudy of tiiin oro ah-lp^iorrfc h*i;j previously

becni mads and la repornad In Jntariia K*D 0 Tast Report

Ho o' 7il5~M?^ iiareh 1S P 1955 o

Tho ore as racoived had bson crushed to about

t inch o Several hundred fragments of this material were

examined under ths binocular microscopa and tjatnplea chov/ing

the various typoa. of mineralisation v/ors selected for more

intensive study* inclxiding the microscopic examination of

nine polished sections and nineteen thin sections

Sojtis of the ore was ground to 85 mesh by 15-aalnute

grinding in a laboratory ball will o Tho. ground ore wao

sc:cQ0nod to 325 me ah on Tyler screens and the "325 mesh

material waa infrasiaod. Kaoh of the aiaed fractions was

v/eighod and analysed for niobium oxide 0

The minerals were identified by the examination of

thin sections under a petrographic microscope; universal

stage determinations; the immersion of. mineral grains in

liquids of known refractive index; and by X-ray diffraction

photographs* To simplify the identification .of minerals

present in small amounts, they were concentrated by means

of ha .ivy liquids end a Prants isodynamic separator 0

'3.'o cis t -a r m ins t-?:;o a a .o o c x H t ion of t-lxa riobluxsvbsftring

ninora';. ox- :,i.j.ri.-3ry.ls f, o':oh o" the r?!:;-'-:! .i:'.vac'sionu v/as ^orjara

t 5ykv A^ -. 'ir

:l:o.';3o t^rse portions containing the follov/ing Edna

(1) fa.i,:L-jp?il:.hic minerals, (3) forrorcu^nasian mi;

and (3) magnet its - Separation *.vaa made by s-moving the

Magnetite with a hand magnet, and than separating the non~

.magnetic portion into sink and float fractions with totra-

bromoethiine {dR42^96) 0 Tho o ink fraction conaiatool chiefly

of the ferromagnesian minerals and the float fraction

chiefly of feldspathic minorala, although there were

numerous combined grains in the coarser sises*

The following procedure was used to obtain a pyro"

ehlore concentrate for analysis s Clerici solution v;ith a

density of 3*8 was used to concentrate the heavy minerals

(pyrochlore;, airconp metallic sulphide o, and oxides) from

the "150-5-200 rassh screened fraction* The minerals of high

magnetic susceptibility were then removed with a Pranta

isodynamic separatorp leaving a fraction containing pyro

chlore Kircon, and pyrite 0 This fraction was further

separated, using heated Clerici solution with a density of

4e8 in v/hich the pyrochlore floated while the pyrite and

most of the zircon ssnk*. The pyrochlore concentrate,

j) amount ing to about 20 milligrams,, v/aa then submitted for

4. ~i spectrop;;-r'aphic ri•iH -r--; T1 ^,-.,,,.7,,,.-J p.,,, j l iJ.-j. ,...:\.: -,) •..;...: i .^t'i

a to bo

O JL n O C U,- O.*? 31", i C "i' O""

.: V

il

ri!

j

scops,.,, hcv/aver, it la soon to cantint of clark, almost; black

P7ô;cene ilntoi'grov/n w.ltl'i rujpholina, feldspar, ancl varying

proportions of other minerals*

In thin section,, two Viîetia^ o? pyroxono v/aro

observed o Tiia inora abundant variety Is highly pXocehroio

from grass graen to yallow 0 Universal etage determinations

indicate it to be aegorine-augite* Tho othor variaty is

non~pleochroic and less strongly coloured but^ because of

its highly altered condition, no definitive optical data

could bs obtained; its X"re.y dif f r fiction pattern,, however,-

suggests that it may be a aoda^rich variety o 1'ha pyroxena

is all t ins-grained,, less than 1/2 nun. In diameter-

ê .no^pjielirie is claar and colourless, v/ith a

vitreous luatro., Moat of it is intorgrown v/ith tha pyroxona

and is of comparable grain sizo^ although some larger grains

up to about 2 ran* in diameter vvera observado Some of the

nepheline exhibits varying degrees of alteration^ with the

formation of analcîtê. In aoma of W.io more highly altered

material^ all of ths nopholina is replaced by thla mineral^

leaving an intergrowth of pyroxena and analcite o The latter

mineral is white to pink in colour a:ad p v/here present in

fairly lar&o jnaaaos, is soft and soapy in texture*

fj?^.o Q A!^^^, have tho savao i-i'^c1 ^ of oc;cu.ri?once an

f.x -.ip':j . ."'..'. ;- ,., b?.;Ln;i; c-vo-iiar.'" ^hJ.o.C.ly A"i .;ir.al."1 . ^r'fiivxi interjy?ov;n

x: 1, thin ,c!o;;'';:lo'.;\

es exhibit a fine "grains ci dusty alteration*

nora abundant feldspar is a potash feldspar* but

albite -oligoclase 5. a also present,,

Tho ajoatito has a clear vltreoua lustra and la light

green in colour e. "C t ia eomeyyhat unevenly distributed through

put the rock and varies considerably in grain size* IVhite

cjil^cjLte^ and a dar.kj, highly pleochroic biotite occur

similarly o Buff-coloured .g^ccm is fairly widespread as

small grains and grain cluster s j it fluoresoes faintly under

shor t -wave ultraviolet radiation

The chief sulphide present in t ho ore is pyrrhotite^

which occurs as rounded grains and Irregular masses In the

gangue* Trace amounts of pyrito, sphalerite, and chalcopyrite

v/ero also detected in the concentrates*

Jtfagnatite is quite abundant P In some of the rock

fragments it occurs only as sub-angular to rounded grains

among the gangue minerals, but in others, where it is more

abundant, it forms small irregular masses, It is intimately

inter gr own with the gangue,, tha contacts being highly

irregular and interpenetrating, with both minerals containing

inolusicna of the other e Tho grain airs ia extremely variable*

:o.:?. rig ing .from micron si se to -^inch,, Ths siagnotita contains

S.Vll^Ij?.^ rotbly I n i:;ho .fo^n of /v.;i;i.;.:-o;!3 XtuivslXaa of widths

; :.'"-'. - " ''' :: • '. '.o.von o i 1 ova.a ";.a\;'i-. I/.u:-:.;. 'r.:-; .x l w o oc,oitra an

\ ,-.'.\v ::\i~-:j tf,X'ai. :vi :lj-?. t;hn ft r. r. c.; ;/; y ^

~ 5 -

'i'he ^jV^oc^Ioro.'Jiaa a VeirilnouV lustre" and ranges in

colour from light yellow to reddish-brown, v/lth the latter

predominatingo Its specific gravity la about 4 0 5o It

produces a v/eak^, diffuse X "ray diffraction pattern, character

istic of a partially metamict state (disorder of the crystal

line structure due to radioactivity) * On heating tha pyro-

chlora to about 900*0, recrystallization takes place and a

sharp X~ray pattorn is obtained 8 The cell edge of this

ignited material la 10 0 35 Angatrowso

A sample of pyrochlore concentrate, "weighing about

20 mgc and obtained by the procedure outlined earlier p was

submitted to the Spsctrographic Laboratory for analysis* The

results-, v/hich are oomi-quantitative^ are given in Table Jp

column Ao Because of the preeance of other minerals (chiefly

zircon) in the concentrate,, the results total only about 60/^0

It is assumed that by recalculating the percentages to total

lOO^p the composition of the pyrochlore itself can be

approximated, The results of this calculation are shown in

column Bo

'SW^9M5Lj^n:t^(M3 J-}^.. ^îAô^0,îoii0^.^?L'S.H2.A J}

IJbpOg ** 35 oO^ 58ol5j

Ta205 - lo? 208

UgOg - Oo7 l t.8

ThOg

CaO

MnO

Peg05 *-

TiOg'

MgO

Ce205 -

LagOg

10o2 3.6.9

0.18 Oo30

606 11 oO

5 r: Q "i oî k/ o A

Od? 0*28

~ "

Oo31 0.32

eoTse rooTooT

A ~ Results of spectrograph!© analysisB ss Results of spectre-graphic analysis,

recalculated to total

The pyrochlore is extremely fine.-grained* Moat

of th.3 individual grains are losa than 50 microns in

diameter (Figo I ) e although a foy; grains as large as 200

microns (0 0 2 mi* ) v/ors ob.vor•••.••od n 1'uch of tho - pyrochlore

ooouj'c 5.:\ c/.u.-if'.c.i'.i \.VMivar ^ imci o'u- Thoso clu^tsrs nx-o

. l : •'.y.i'-i'.iy '..^.co'-'J.::.? '.s. ^ ;::v c : arul /';v )-::ue-\tl contain

inolufilcnii of gangue, Tha largest aggregate observed

(Flgc 4} waa 0*4 rim,, in vddfch and ovar l rci-a* in longfclu

Pyrochlore is generally quite brittle^ so that,

it has a tendency to slime dicing crushing* With this

poaaibility in mind^, sized fractions of the crushed ore

were analysed by X-ray spectrograph for niobium* The

results are shown in Table II 0

Tablejtt

MiobjAUTii Gontant of Siaed Fractions of Cyu^gd^Ogg.

Percentage Grain Size Weight ^ ^'NboOs Distribution of NboOs———— -. - -—-— — —— -— - ^-——- ~ -.-^ m mm i i i i i. -li . . rai. . -——-- -—— -——- --- ---— —— - --— -.—— - —- — -- -.____________- ^,.^______fjf___A&.

Sere e ne d Si ss e s : ~

*65 Mash

-65*100

-100*150

-150*200

-200*325

Infraaiaad Siaes:

~40*28 microns

"28*20

-20*14

-14*10

-10

8.8 0.24S2

lid 0 0 24

1 "7 K n OX J, i c O W o AC)

16 0 8 0,22

24 C 5 0*21

-

7 *7 ' C\ C* R o l VJouO

5o6 Oo30

3.8 Oo40

2 06 Oo49

6,0 OUV).

"B

10

15

14

19

7

.6

5

4

11

.6*

o3

o5

o2

o7

"7

o5

.9

oO

08

100 oO

.. 9 ~

I'his illustrates a considerable niobium enrichment

In tho i'.iB9r''sisosj,; the "10 micron siso having --abdut tv/ioe

ag much HbgOg as the head s 'ample ' whi eh aa s aye S 0*24# Ift^Qg n

Xt Is significant that this fraction oontains lloB,^ of tho

niobium praaent in the or-3 0

Examination o.f the thin sections lod to tha

conclusion that moat of tha pyrochlore is enclosed In the

feldspathic minerals and calcite o This is shown in Pigs*

l to 4. 0 To obtain a quantitative eofcimata of tho association,

each of tha siKacl fractions wag js^paratadj, as daacpibad

earlior, into feldspathic (72#)/ ferromagnosian (gO^Jj, and

magnetite ( Bfa) portionso The feldspathic portion consists

predominantly of feldspar, nepheline, and thoir alteration

product s j v/ith a minor amount of calcite; and the i'erro^

magnesian portion consists of pyroxene v/ith smaller amounts

of biotite and apatite. Since some of the fractionated

samples were too small to bo analysed cheniicallyj, they

were analyzed by emission spectrography using a technique

designed to give quantitative results*

10 -

SH5fci*l!LJ^^±iijL^L.^

Grain^SiK^

+6S nash-65-MOO

-100+150

-150+200

"200+525

"40+28 microns

-28+20

-20+14

"14+10

-10

FeldspathicFraction

Fo-c'r omagno si an Magnoti fcaFraction Fraction

0.17X BbgO,

Oc20

0.23

0^

0.20

Ool9

0.29

Oo34

i 0.12^ NbgOs

0,10

0.20

0.26

0.27

0.35

Oo58

Oo90

O.M* abS'

O.i9

oaa

oils0*100.14

0.22

Oo24

Kot separated

The results shown in Table III indicate that at

coarse aiaesp where liberation of the pyrochlore would not

be expected to take place p the feldspathic fraction contains

more niobium than the ferromagnesian fraction* The magnetite

also contains so/no niobium, but ainoo there is only 8^ of

this mineral, it playa a relatively minor role* With fi nor

grinding, however, the pyrochlore Is freed and* boing heavy,

* . I * * *'- •'•l f* s\ * ' -*s s >' *^ -- '* *s

•" ''i'.')'" : : 'j''.".., 'j.'j'V 1 .'i '^'" ;,'".'i'''"l JHOV'vJ C.;,";: ..''.'.V ill T'J. O "L O JVc

^____î^^^lOi-l-^nojjde.n^ Ji^sc tilon

i9-Ji:î-J^J!^2^s^,*"'^^^^^S^"lPJ!l fraln^Siê SSJiJLS.

•*65 Mesh ' ' -' ' ' Oc71

•65-5-100 ' - Oo50

"100+150 " Oo83

:150-!-200 . ' - ' Io04

1.04

- 10-35-40*28 Microns

-28-1-20

-20+14

"14*10

2 o 04

2*65

As may be se en-from this table/ the ratio is about

lil at grinds of -150+200 and-"200*325. Thia* thsnp is the

sixe at which appreciable liberation bagins to take place.

Tha niobium ratio is higher in tho +S5 itiesh fraction than

\vould be expected, but can be attributed fco poor separation

of tho feldapafchic and f e-.-roraagn^jjian ni nor ala at that coarao

îas,, Thl^j, of coura-3, .prosenta v:oriouy difficulties from an

oro .:lro:;;sir;:" standpoint;,' for ;?:'' if. ie doolôd to kc^p the ore

x'-;/:-.''.j.-.'; *. 7 ::o;\::'ao to rv.-v;v-u\' ;-; ;-!?..l'.::: .v.oa^;;n.. th-3 pyre s b.! or o

i-o 325

P! lin

"H*'

oo cooooooOO3O00OOC

uuc? g

O';. -4:110 s-p arrsqc c- 1 P'*" ^•fl

s,.tnoro a.vOTu:

ficp-j^ovne .zs-ti'-i-O jo secvj:^ P^^ ^^OVT^CO

S^^

'•'/^^PZ

g^MW

C

o

T^

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——

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T-4

CS?

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firf o

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? ^ tV^Sfflpftsr-: -;*"? *53BefiBN* -.fr*' k-R -. -.da\''' -

20'.MESH

AT 250

1

x

1

and atrln'gora of pyrochlore grains (dark, "wit;]i 'Jalgh relia'f) in feldspar (v/hito, with dark, fir.3"grained alteration) 0

J.-"

3

Several c3.iAsi;er s bf p-;rocHXoro "grains'dark ' enclosed

in 'calcite* The largo i7icibvldQ gj?ain in. tha' x'tpor- .vi,c;hr. ha?.?.fl ooi.'.na.v in

ttfft) euTieqdeu UT "pu*

- 91 -

i.

f

CAflAM

KENE3 BRMICH

Ottawa., October 23,

REPORT

of the

ffllBRAL DR^SSINa AND FROCKS I-ISTALLUPJ3I DIVISION^

Investigation No, J-3

A Minei-alogical Studj' of Carbonate-typ3 Pyrochlore Oro from the Nan-egos^ Ontario^ Property of

Limited^, Toro nt-o^, Ontario o

C M 13 Ot K C M M ItJ

Note:""""This report relatss essentiallyto ths samples as received* It shallnoli.? nor any correspondence connectedvhorewiths bs xtssd in part cr in full?.o publicity or aclveridsing i.tattsvfor tno f?-:0.e of ohnrea in any in^oxohion

'Copy f [o, * , )

O T O? A W A October

REPORT

of the

Investigation ft

Iflnai^ilogleaX Study o? Garbosats-fy/pa Pyrochlore Crs fj'-cja the WeiTiGg03 a Ontario,, Property of MiiL^'Mincs'&l

.*i :W lil t? tV ri W M

Sh-2 ortj detcilbad in this ropor-; is :^:iii a 6^6-pouxid shipment

r.t iho Minos Branch m Jivlj 12 ? 3.?i?6 ? fro:a HJ.% 3 c J) o V7i'avsr f

v*-i:earoh Si;pe.?viscc y i'lalti-Minarele IdKitsd? 68 Yongo Strsetj, Toronto 1

Ontario , This '•hip-i'^rb T-re..:3 st?tod to eG-iprlfr-:: K 1^6-^oot motiotion oC

t!

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AJ'

~':l?,'l

^^-'.;'

tnC-

XT*

Oo*! C j

T!G;

?

o

Oi

waih

, is*

iW

^cW

,*-ii^sfcâ

:*i^

i*l*

M*4ttrt,'W

^

--'.fff- '-'-r—

- -i ii

,îjju-ftiâS.T!

vi

*

of ths hcav.y liqtiiri

cl.it.if -oi:\-?rel co;^ orient,;:; pre^n'h in

in oi-vter of decreasing i;b"a:Ja-tC!6

I,

shown in.

i; or ths density fxvxcti.C::s

-28*3?;

-200

'

26,t

10 O

6-1

He?

r'êaab.^c!. :.u Iî j -:Ss:s"tEHl"T™" """ "" """" S ""2.nr~' ':,3-3-.-0 .? .0-;?

Iîdi """

77,6-;

67,6

79 a

s3ri.rjt.Lts-

, O

22. .2

15,0

3.0,7

5-7

3,5

, j

*

- J; -

'I'oblo I can b:o used to oritlnatw thj oiao'aat of e?u;h of tha urii ci.pal .*ar;^ral3 :ln the ore,, 'j'ha o silexite t? cs-jino't be entirely cuavititai.iv3s

ho-!;sver, ticause ths -J-35' mesh fractions ocmta:i.n a fairly kujh proportion of

combined grains and because the -200 mash si-:-^*' amoiuiti:!fi to 1603 psr csnt.

o.? -);ho bre ;, haore not been separated and am xiot includsd in Table l*

Nevertheless* it is evident, fram this table that calcite is the prixicipal

eoroporienfcjv Making up wore than 70 par- cent of the saaiploo 53"te other major

jRinerals are apatite, pyrossns., ai^.d iftagnetites tri-th the regaining nd.usrals

each jwiking up one per cent, or Isss.o of the totato

Th9 susceptibility to crushing of each mineral can also bs inferred

from Table I* Calcite is enriched in the coarsest fend finest sizes^ the

micaceous minerals- -biotite s,nd chloidte—rerdain relatively coarse;

apatits is Kost abundant at about 6^ rasshp probably the sise at Xtfhich ths

inilvidual crystals ara Iibers.t3'.3 ; and pyr; cxeno. and t)itr minerals in the

heaviest fraction are enriched slighv-ly in tho coari53 sizes;.

The grain siae of the different rdnex'als varies considerably c

AlKios'-j all ths gangue Kilnerals are liu-ger than 0*5 rsa* ei^.d are therefore

offtctivo3.y sapai'ated at 3? mesh,. Pyrochlore 5.s finsar grftined,^ as a

rv lo y although individiuil crystals, up to l rii-.. in diameter h&ve bean

observed-, ' '

5 v.n ^ c l CM- in d-.ar;.-::t-3T, ;vi:-: •r. i.-J : -..'t j;::'eiv?r;t ir1, ths ci-a

I

Tha (talcite contains an appreciable escount of strontium (1,9 per

c:;rio Sr, cieternuusd by X-avay spectrograph),, At leas't SDKS of this element,

can be accounted for by the presence of tiny strontianite inclusions in tha

calciteo This vras established by crushing a. sample of ths calcite to minus

10 Toicrous and centrifu'ging it in s. high density liquid* This resulted in

a sink product containing strontianitee Thare was npt enough xn tho sink

product;, however, to account Tor 5.13. of the strontiioUj. so scene may be

present as strontium ions replacing calcium ions in the calcite which^

of course floated under tho above conditionso

Agatit^o This mineral occurs in calcite as clear, we31-form9dp

prisiorvbir, cryatals ^rhich vary rljti colour fro;.n colourless to light green,,

A charoical Pg 0;J determination on tha heacl eai-aple resulted in a valus of

L23 er cent P equiveleat of 7c6 per cent apatitSo The apatite

dii'.t'o:.-v3 from normal varieties in that it contains 1^3 per csnb strontium

and l, -.72 per cent rare earth oxicles (incluc-ing thorium^ if any) 0 She

prasonce of these elements in the apatite results in a specific gravity

of 3,23 for the udner&l, which is slight3y h:*.gher than that of nomJal

fluorapatite (3,18),

Py.coz:ene it- the most abundant silicate rainsral 5.ti the ors.

Tl.-; others9 biotite and jpM-orito., are relatively uniU.por.tant quantitatively

i-.rd will net be consider ea further/-,

rib st of l ae pyrorjme is d2.ri: ''greo'i ir, colovr,} appocxi'lng albios'r.

' .".;7. v: x-. i 1 -.'v:- - -- • •j^iTnav'^^ A sp^ct.vv^'a^hlc r -: ::f..l.y;i5.y S-^dlo^t-ss ths.t ^Vjs

. 6 -

'.iJhis diagnosis ±3 corroborated by optical ai?.d . X-sre-.y dstsKv

A srr.all amount of a second vaxdety of pyroxene was observed.,, ;

this one bain-; light green in colour and forming elongated prismatia

cleavage fragment s o X-ray diffraction analysis and optical dsterndnations

establish this variety as acmite,

Magnetite and i3S22î2." There is an estimated 3 per cent-

reagnstite present,, usually as irregular forms several raillirastres in

diameter and haiTing .rounded outlines* All ths obsDrved inagnetits is

travrerssd by narrow ilreerdts laansllae tisy.al3.y 2^ jnicrons or less in width

(Fige l}o A srâ3.1 portion of ths ilnenito is present as individual graina

and forms flat cleavago plat-as ir* the crushed orsn.

jddas present iiioludo gyrrfiotite p ^t®,c and

in that order of e.bundacc3o Thsy tend to occur together in eicalX u

areas r.

___ _ ,3o Only a Esnall amount of this mineral was observed*

It is white in colour and similax- in appearance to calcite., with which it

is intergro^/it. Much of ths strontianite forms tiny inclusions in the

calcite-j although soras lOQ-jnesh grains ware obsei'vede.

F^.coc;hloreo This is the only niobiiaa-beasdng ndus*1?.! observed

in ths ore o Its chief occwrenos in aa isolated ootahsdral crystals a?id

rounded .grains usually leys th?.r- O c,5 nw. 5*i diameter but occasionally as

le.rr;o a- l :an., y e:rbedc.i2ci in csulrdts and other gaague joianerala^ ' Liberation

shcn'ld b. .-''''.irly co:-:::':..^ ? -'.':. ''.00 /^yh., Tbs colour c? tb? pyrochlore vori'3;;

r,-:y;ji,^.-.' l-?vr:.- a f!;-.r ; c-r? irLîh f\ light.3V riss (Fig,

A K!r.!xl.l aviioiyit. cd' a raUt-lvsly purs pyrochlore concentrate

V/5..S laade fi-oji the or's^ using hs-avj* liqirlds ard the Kagnetic sspaiâtoTo

This concentrate was analyssd f?p3otrographi?ally using oheirdcaUy -

ari?j.ysed pyrochlore as a standard* resu3.tiTig in. a ssiai-qi^mtitative

clstssmnatlon, shovsn t?: Table II 0 'I he e-.nalyKis doss not total 100 psr

cent..- i:c??,uso vrat-sr and fluo5?in© 0 conanon pjrrcc'rvloiê coustitvi^ntSp ai-e

not detected spect;-ogr?.pb.lc:all7 arv? bscause of inaccuracies "jLn-thQ

Se;.'i--qUrr;i|.it?.tivc Spsctrographi-c-. dialysis of

cant-

m

CsO

FTt ' i l

O, b

13"0 2.52 J.3.9

75*6

The pyroci-Olor-3 is ps.rbia3J~j' sit

.\.C'v.sr i-,-;n:Lt:lo'3. to j-'esôx-s ci

yielding a diffuse

W-.* J'

P,. o -

y Or/,! 17:^5.0:'.^J

'^/jxc'.iiorrs is tho c; ;ly ::iobii;:;^tsy,.-dr!j;; i,iir.e.va3. identified, la

the ore f:r-.cl occurs as ctissrafiinatad. c;:-yct-0.a in the gat-gug iftin

The priiK'-ipal [v-sn^ua minarals ara 05;lcit3s apv.t,Ite? tUid j^rroizo

calcite is- notebl-s to:: :lt.s stron'birjr. ooirisntp fc'ed the apatite .foy its

strontium and rare sarfeh content s o The r.sa.jo.xaty of tiie gangt^e roinarals

are liberated, o.'c. 3^ lasshj, and. ths pyrochlore i-.b about 100 mesh*

n y; w a r* fei n M t* w M f"

U t*; te Ir! ^ f* H W f-* H. !*J

E, H.-.Hie&fl.

tgiires X-3 follow,)

- ^-1*-- J —^ r- ~^ 'J "v--.

i;*.-;

*-'fv'* n

M-i"!t~ Q4

f;v^V®i.;.-^;

".'.v,. l, -- Pollah^d e&c-Mon shewing ^-Ira-aalte lc;.^llae (e:rs-yi

(\;ldto5 tra ienli^ pits svr©

? part-ly crossed)*

b

'•*"- ;-.? ;. ' *. /.'.'/: Vi'i!.*

10)

2A ... A thin section viovecl in oblique reflected light, "showing s. pyrochlore grain (grey), in pyroxene (bleck) 0 This

rs graiii has a light core and a darker rinu

M fJ H '-t

C96T

JOm

m

QXUVXNO 'SQ03H?J!

9 ui ox

01 -t** H V

l'2'.

3^ .J

O

Xroeaing Depreasion Curva ......**...*.***.. 12Froasina I^pr^tiaion Curvs ****.****.**.** 16

'W* *

19

At On** Atao*ph*r* Totul rrdsuyra *..*.*****..*r.. 21tiun At 1,000 Atjsospharas Total Proasure ...* 29

In Cxy-Oas Flara* *..*.,..,*....*..**..*..,....... 30

O? TH* PHASJ53 ,,.*,*..*.... ..,*.,...,., ..*,.... 30

H&3UIS3 - ..-:. .. :. ;-T ,;. :;

Huns at Ons AtRto9ph0rti Pro.isuro **.*******.*.*.*...**** 36Hydrotbeyawl Run ftt 1,000 Atooapywres t'rsdsurd '*.***.. AlViolation of th* fhaaa nulo •••***.*....**..*****.**** 41

RY AKD CCasClAJSlOMS OH THSOiSnCAL AJfi) HXB9XKK8TAL WORK .* ' A2

KUlSfl-MIMSRALS WUM3KK 6 Oi^

••4*****

Aspects Gftolo^y •••••••••***************************** 45of Ntuab-jr 6 orebod/ ••*.**4.*.*****.*.*...***. ^6snd Coocluaiono on Origin or Kuabtr 6 orebody ..* /*9

******** 55

57

List of.

I Crystallisation temperature of magnetite f ross idaal solutions . 12

li Avsrag* composition of tba iJulti-Xinerala k'usber 6 orebodyfro*a dix assayed dieoond drill holes A********.***********. 13

III Starting bulk saa^notitd-fluora^tit* composition* us*din rana •..***..****...*.'***.*.*..******************.***** 20

Partial analysis of Kinavill^ raagrwtite concentrate **.**...*. 20

Iron saturation t*at of platimai cruciblsn ••••*******.****. 23

CUidation potentials of a*gn*titd end nicicel (Po^M 1/5 atsu) ** 24

optical prop*rti9S of th* pha**a *******.*** 32

37

IV

V

VI

VII

VIII Iv93ulta of runs at on* Atsospb&r* **.*..*.**...***.

of

l*

a*

3*

4*

Part of tha t^rewy eyatea iron oxide-Jfluorapatitt-silio*

tioint*rpr*tation of Fisohar's ira-jdacibility theory

Activity of mdgndtit^ as liquid, ad solid, and in solution

f rowBinary ayotaa ^9^\ ~aodifiad Haoult's lav (in taole p*rt*nt}

Uinary ,

lUoult'e L&w ( in weight percent)

from

6.

7.

9.

10.

V 4'3Platinum cruoiblo tdth oapsxde used in aarlea A And B

iloctric ntufflo furnace in opar&tion

Caidation potentials of ssa^nstit^ and nicks!

A-otjAritbmio plot of tw)0r**vyV# i B

oxidution vs. tisa st

4

9

14

1518

22

22

25

27

iii

IlJta s t r&t icna e csntinu^d s

11. Comparison of :c~r^y diffraction patterns for various phoaph&tas ** 35

12* ixpijrimsttt-allj' clstaradr.ed equilibrium dia^rsa for tha s

13. TiO, in of

xmdar ens stsnosphara pressure **,e**..*.,.,

in equilibriati vith ilasanita as ft function50

II

l* T^p* II Bakar au&lyaod oeloium

2. H0at*d' Bakar enalyaed calcium phosphate (crossed nicols)

Figure 1. Heated Baker analysed calcixsa phoaphata

Figuro 2. rartially fused Dskey analyzed oalcivcn yhoaphat*

IIIalkaline ring cotaplex ;.:; "~. -'^ :

Hxeaber 6

IV

Figuro l* Aerial viaw of

Figure* 2. Korth*aat foe^ of opan pit, H **-?n**tlt*i-jfluorApaU.te orebody*

l* N^pholJji* syenite vstll rock two foot bolow foot wall contact

2* Syanit* v,all rook at th* orebody contact

Figuro l* relationshipa in the orebody

VI

Figura 2. Fin* gr&ined l^olita xenolith (?) within the orebody

Figure l, email rwgttdtite vaina fcnd pods in th* nepheline eysnitt hanging wall

Kiguro 2. PymxKTOisad nepheline sysnita in the hanging vail near the oont&ct of a saall saagnatito vain

lv

ABSTRACT

bodies, eoerecnly occurring ia alkaline ring present unique problaas in petrology end petrogenesis. Sain-

hard j Fi sober (1950) faua ^hown that liquid na^netita and fluorapatite are portioned into separate liquid phases by excasa liquid silica* The prsa- ertt otudy of tha magnatita-flaorapatite Join demonstrate* the existence of a binary outsctio precluding liquid immiscibility ia a silica def icient systes.

The aagjietit*-.|luorapatite eyatera waa Investigated at 900oCt 1050O C, 1235 C, and 1300 C, under one atmosphere pressure and at 900 C under 1000 atraoepherae water pressure. Theorotical caloulatlons using a mod ification of Haoult'a Law Indicate that tha binary eutectic ia at 1540 C wad 56 weight percent aagnatite. Th*s* caloulationa veirft mada a^ywing aagnotita and fluorapatite fora an id*al solution* Hovevor^ this solution id not ideal HS d*acnat rated b/ tho exp*rira*ntal results which plac* th^ eutectic at about 1,000 C. This eutectic tenpvr&tur^ ia not aff^ct^d by pressttras up to 1,000 atssoarheros* Solid phaaas n-^hieh occurrsd in the nma wsrs jaa^nstite, maghôit*, hamatitft, calcium fluorid*, fluor* apatitop phoHphata glaâ, and several aodificationa of calcium phosphata, Further high twsiwrHturo and pressure work en this systosa and its ra- l&tioniihip to the taraary magxwtita-fluorapatita-silica oyatâi ara ossary to daterain* the nature of a magnfttite-fluorapatita tselt*

In th^ light of thd dxpariA9ntal results it is obvious that Haiti-*fhmtey 6 raagnetita-fluorapatit* orebody v&a not eaplacod aa

an igneous ra*lt, Tha high t^taporatnra necdssary to maintain ouch a nelt in th* liquid stats is incompatibla with tha low tesjp*ratur* zeo litic alteration of tha vail rock*

Hydrothermal deposit ion proyidan anothvr questionable theory. Such a solution would bav9 to be acid aa advocated by Holear asid Schrwdr (1961)* th* fluorid* content of th* fluorapatite sugêata that the solution would bs acidified by the highly corrosiv* H?* Thor* is no evidence of this corrosion and thtrd ia no definite cân*

ouch an acid solution could be neutralized during dopoaition*

Solid state injection id postulated ae the jaeohaniaa for eaplace- of the or9be4y* The magnetite and fluorapatite crystallised at

depth and vara aub*wiu*ntly carried upward (perhaps in a plastic stata), into a cone ahast fracturss by water vapour anriched in lime end C0? o Hinor incipiant recrystallization of the wall rock nepheline and ih-a" anhddral tmturs of the p.pafcite su^ssb th-at thia injoetion

A study of cryatitl orientation ond deformation and of vaators voixXd b-a useful in testing th* infection

Tha coBwsen oocuWncs of aagnatite fend p.patitd in alkaline ring

has prompted a study of t'nair equilibrium phase relationships

under high taaporatara and proa.^ura. Frocs this, the origin of magnetite-

apatite bodies car. be better understood* Two petrogfenatic view* curr

ently in vog*j* concern a na^satic or hydrotharaal origin* Soth of these

ara open to criticise.

In this thesis the following topics ara investigated t

1. A thsorotical' approach to jaa#natit0-n.ttorapatit* malting r*-

lationships.

2. L'&vitting an expsriaental jaethod of InvsstijjAting thdir aeltin^

i-olationships at high temperature ami prossura*

3" Itlentific&ticn of thfl various phauss involvftfl aa rcaotantw and \

products in thio oyst^n.j*-

4* Detorsinitts; the binary eutectic for wufcftetita and fluorapatite

ut one fend at 1,000 ataosphsros pr^saur**

5. Application of th* partly d*t*rain*d phasw rslotionshipw to

a aagnatito-fluorapatita body within an alkelin* complex* Oy rol&tin^;

th*j ©xperiaantal fucts to petrologic*! facts th* origin of th* ore

body ia cbducad.

the orebody to which the uxporisRtmt&l findings were applied i*

6 raagnetitd-apatits orebody of Xulti-Hineralo Lijnitod, nea#

Cntario. In J tly, 1962 3 briefly visitod thw property and

HH the f&cw oi" th** orebody* .':*xr0riraentaJL

p^troloîcal invoatigationa v;ore carried out during the winter of

lvo2-X953 at ths University of V-jstem Cnterlo, London, Ontario and

ab Yalo IViivsraity, Saw Hav*n, Connecticut*.

J wish to thank G*;4, Boon* of ths Eapartswnt of Coology, University

of Western Ontario for suggesting tho probity to rao and for his gaidanca

and constructive* critiaisau Tho National Soionea Foundation provided

an undarjjraduat^ student fellowship for the research dono at

l/niv^rsity* i'.M* Orvillo of the Dapartaent of Geology, Y**lo

was instrumental In acquiring tho fa^lowship and gaiva freely of his time

and laboratory faciiitioa to holp conduct tha research* Thanka are also

given to E. f. Carr, President of KuLti-22Lnarals Limited, vho suppllad

mi* with cowpany report:* and -to V.M. Church, i&apartnsht of Cooiogy,

voraity of iie3tflm Ontario, for his stimulating discum-iona on rock

deformation.

Vary litrla rasârch has baon done on Bagaatlta-fluorapiitit* ph***

equilibriun* Ths snoat significant vork le that of Reinhard Fiaohcr (1950)

on the torrjary cyatom iron oxida-flnorapatite-allica. In this syatoa

Fisohsr shows that stagnatite and apatite liquid, in th"s praadno* of silica,

ara 1-aaiasibla ov&r a wido ronô of conpoaitions* Figiirs l is part of

'a rJi^rafl for 1100 C or.d l atmosphere presûr^* Ho'rfdVer, Fischitr

Fe O x y SiO,

Figure 1: Part of the ternary system iron oxide - fluorapatite silica at 1400 C as given by Fischer (1950, p.344). Immiscible field intersects the binary magnetite-fluorapatite join.

m

Fe O x y sio.Figure 2: Reinterpretation of Fischer's immiscibility theory (Figure 1). Immiscible region does not intersect the binarymagnetite-fluorapatite join.

dc-33 not diaeuas bulk composition on tha binary

Join. All of his i-una were made in oiliea crucibles* with the result

that oilier W&3 absorbed (up to 25 woight percent) by the liquid aystea

(Fiach*r, 1950, Tttbla 4).

It is ray opinion that thd binary syatea ssagRatito-fluorapatite

ia coaplotley rsiscibl-s and that iewdscibility only occurs when silica

is iiddad td the systsm (Figure 2). No evidence of iwniscibility WM

found in the pr*sant runs. Cn tho contrary, thora ia good evidence th*t

e binary eutectic exiata at 1,OCO C under l ataoaphsro proasur*. It is

cotsnon knowledge that silica is iis^iecibla with iron coddoa over certain

ranges of composition. This wa* first diocovdrsd by Greig in 1927

(Barth, 1962, p.UO* "hia is lidoo apparent frota studying Fiaoher's

photographji showing jsagnetita and ailica ae two immiscible layers.

These photographs also nhow (as veil as does the anaiysis, p.3J*5) that "

fluorapatite is concentrated in the overlying silica liquid a* veil as

in the undarlying magnetite liquid. This is a simple liquid-liquid ex

traction, the fluorapatite being soluble in the liquid silica as well

aa the liquid laagnetite. It does iiofe seul that fluorapatite is in-

miscible with magnetite. Fluorapatite Jjj, soluble in magnetite but it is

soluble in silica oo aa extraction is effected*

Tha ?oilti~Niner3l3 Limited fijasnatite-fluorapatito-pyrochlore

tfrty within tha Ko^9.i,os alkalina rin*; coaplox vaa uapp\?d by H.L.

fiia findir.ys i^r* su^witted RR a devslopmftnt report to Hulti

ivdu in 1^9. 'Jarvis conclud^ci that th* dunbar 6 orabody

aa an ttpttlt.*s-pvii^\*tit** "ir.tflt 7' whiah completely replaced s. local jsor.

of intan.st* brecciation within t'rw naph-*llrHJ ' ny*nit*u

Tha eiitira Ksssegos alkaline ring ccaplax v&a jutcpod by .'l. Vi*

Hoddur in 1956-5^* ?ho rssulta wera publia'ned in 1961* Hodder did not.

do stixch ciat&ilsd work on Nitnbar 6 orebody, but conoluded that it

amplaeod hydrothersaally.

THSOitY1

Tharo is no known solid solution of aagnatite in fluorapatite;

therefore these two rh&sda probably fora 4 airaplo binary eutectic*

If, to a roujgh approxitaatioi, wd consider a swlt of nn

fluorapatite A3 iddnl, it ia fioasible to predict tho extant of th* autual.

eolvibility of oAch component , tind from this to construct a binary

Consider the follovdng equilibriua which involves solid magnstit*

its aatxiratsd solution*

1. The discussion concerning vapour proasura lowering is based on P*T* Vail, 19^^.

2. In this discusaion r^gftetito is the r.ujor cosspcnont *md apatite io th* rdnor cosiponant. Thuo, in i-o&lity, tha itjifttitft solute is baing dissol ved by tha w^nalita eolver.t. 5:o^8ver, in thorsiodynfcsiicji thoro ia no distinction nado bctvwan solvent and ooluta. Vha inportnnt thing hers i-1 ; that by dijsiyutin^ c-^iotit-.' ^^ t'r.o u-.V-r coa^jietit v-ij cua ^ppl^

'is Law to t/no ^Hgnstita *md di;*r*SK rd tha fluorHpntito for which

thij wystoei to b*3 in tsquillbriua, tht) elision! potential (M.) of

ia :.v;wn*ti*,.-* ems'. eoufcl ths ch*?dc*l potential oi* t fie nagna'.ita in

Sntuirii'Caii solution:

) s --x"( mt (oUMo/vesii at equilibrium ....... (l)

Fartbaraora, chsjsicAl potential is a function of activity {O-} snd

ro (T):

:" is the* standard stato chemical potential*

Thus, at equilibrium the* activity of ei&gnetit* solid equals tha activ

ity of th* m^n&tito in

(2)

If ct-^tis) ropr^asntB the activity of pui^e solid sundtite end

tX Amta) t5ri® activity of pur® liquid •m&fnetittt at.th* c&st^ temperaturv,

thsn, iiccordir^ to llaoult'o

...,. (3) v.b*ra Xmt io tha raolo fraction of magnetite in a ttotttrafKl volution*

Tliio equation thd solubility and tamct* tho

of ra-

Since thia discussion deale with solid ma&ndtita that jlo being

dissolved, pura li.tju.ld ".Hyrj*tite in (3) cannot be th* stable siodification

of ta&gnatita und*r thd flor/iition* ••xsavw^ti* Thftr^for* O.mt tt) aiust re

present th-3 activity of tha supercooled liquid jnagirwtite. The activity of

tJv* sup-drcool'-j-l liquid will b^ fr.uoh gi-aat-*r ti?^n thd soliti so that thsr*

will bc-* H spontaneous tonooncy for tha liquid to cryat&Hiae. Th

8

tha activity of raasjnatita in solution vill ba lowered tp a point

equation (3) holds. Tha amount, of lovariox is rfopsadsnt upon the r.ol*

fraction of ;a:J:^vatit-3 (or fluorapatite) in tha solution.

will crystallite (or "freeze") f rom th* solution when

tha activity of wagnatit** in th* liquid phaaa equals tha activity of

raagnatitt* in solid phaats* Kovsver, du* to the presence* of a foreign

substance, fluorapatite, the activity of the magnetite in solution ha*

been low*mU Mftgn*titft vill then cryfrt&lllaft out of tha solution *t a

lovar tejBparfctui-* thtin it would out of ft nora concentrated magnetite

aelt* Tnia is t3w e&tao as ti&yln^ thfet magnstite will reach its saturation

point in ^ leas concwntratod rjolutlon at R lovsr teaparat'-tr* than it

will in tt nor d highly cor4C*iitn*ted solution*

This concept io illuatraUd in rif;urft 3 whero gctiyitids of

wU liquid, wolid, and solution arc plottsci ^gainat tfcaiperatiira* Th*

system i3 in equilibriua whon the activity of solid aagnatita

th^ activity of tiw asgnetit* oolubion (dmt(sorn)) * **

of ftagn^tit* is determined by that sanount of fluorapatite

which lowsrs th* activity of piro supercooled liquid stagnstit* to that

of pura maj.ndtit* svlid at the sftsw temperature* tha uctivity of pur*

solid fiSL&rifttite equals that of liquid ctagnetitv in solution vha ra th*

two activity curves mest. At this taapariituro the Pi&gnetita will cry—

In ordsr to cJet^r-.ino thin cryotivllizutior, taTi?-3rs.turd for ^ag-

riv'.it^, -.174^11 on (3) ".ust ba -fxp-ci-syd to Incluua tJid tsnparnt'uro cos

t)tt

Figure 3: Activity of magnetite as liquid, as solid, and in solution. The normal freezing point (or melting point) of pure magnetite is T0 . The temperature of the solution in equilibrium with solid denoted by T is that temperature *t which magnetite will crystallize from the solution. Below To the curve for the activity of pure liquid is that of supercooled liquid.

After F.T. Wall, (1958, p.32l).

10

efficient of activity and ita daurndtmca upon M

i .--tin.; (3) parr, i oil y with ruapsct to tflnf/ersVarM:

Q. a. -X * C*, by definition

( ar RT*H^-t ia tha standard stat*

molar enthalpy of svax le t'u* solar unthalpy of tlt^ at tewpftratura ?, amt ft io the i3olftr &H9 constant*

H mt —— H *mt M

Jtt equation

tsolid fcnt.: tho ptrs liquid ut

g (5) we get:

A - VP "

(5)

the nol&r enthalpies of th* pur*

T.

RT* (6)

RT*

A Mf fXt is tho moliir boat of fusion of

Integrating (6) batwwn tettperfturss 3* fcnd To (etstmmirtg A Hf r*

) giv*3 th* corresponding saturation wolo fraction* Xmt and

•R ~-L\ -T) (7)

To is thu norrxtd froeaiiig jicint of purs magnatita. Th0 ^iol* fraction of

in a puns mft.i;ntttit.si rr.elt X^tj equals unity.

X ffL. —

R(8)

i"

f: IK:

ig^-

T ^

multiplying!

R T

Kfultiply by To t

-r _

r (i- J5:^ A

Transposing we gat?T - T"

To

To

TTo

(9)

-•S-O

)

(10)

(11)

This equation lo given by N*L. Bowen (1956, p*i77) for tho calculation

of the f reesing point depression of ideal concentrated solutions* How-

, Bow^n does not show its derivation from R&oult's

Equation (11) end.blos us to oalculat* thv tenporatura at vhich

solid magnetite will precipitate froa a concentrated Ragnetite sol-

xitiwi, if the solution is ideal. All that is needed is the normal aelt-

ing teaper&ture of magnetite (To ), haftt of fusion of nagn*tite ( A Mp~0,

and the nolo fraction of nagnetite in solution* Notice that if the eol-

ution is conaidorad idaal, the freezing point depression is a function of

tho blount of fluorapatite prosesnt in the solution (as expressed by the

.tola fraction) find not on tha otorsickl characteristics of fluorapatite*

7hua ideally, frseaing \ o Jnt daprflsaion io k colligativa property.

, a rs&jjn^tite-A'luorapatita solution is not ideal partic-

ularily at th'j lowsr equilibrium temparaturos* Aa tha fr&aaing tsap-

er&tura lowars with t'rw dser***3lr.g concentration of ssagn^tita tha theor

etically calculated irassing point deprsaslon curve dajp&rfcs from and

ftbova th# atstual fr^oaiins point d*pre*98ioc curva* Tho c*xu3* of

la tha hdnt of mixing of nwgn*titft iwd fluorap^titv ia tbo

solution* The heat of mixing esanot bo thooretioally

for aagn^tita and fluorapatite without e3cp0riment*tion to dariv* tb*

values, so A correction OHnnot ba made for

fe",

Using aquation (11), the thaoratioal idsal fraas^ point da-

*. curva for mugiwtit* ia caleta tad* Tha result* i&r* o**n in

Mid 5 a tabla I Hat J* the crystallis&tion teaperatur* of

from ide*l solution* of known concentration*.

Crystallisation ?omp*ratvm of /'.agnatita f rcQ Id*Skl

To * 15970C (Darkw and Curry, 19Ao)

A fL * 33,OCO *- 200 cal ./-sola (Darken w*d Curry* 1946)

percent of eolution in

Weight percent of solution in

Cryatalliaatloa temp erature of ma^netit* frew id*al solution (TPC)

100 100

*Kf3*3 76 013

01 2 c/).VJ.O* ,A/

1597

1532

1554

Tably I cofttir.ued.

51.5

30

20

20

7

*.6

11.66

1373

xjca

Composition of Kuiti-Minarala

Chemical. Cae. sn of tha

6 orebody

Suaber 6

Tha composition of JJuiti-Hinarala Euaber o orebody was oaloulftiad

from data supplied in company reports on tho average assay of aix dia-

drill holes. Tabl* 11 lists the composition of the csain awj* of the

6 orebody*

.- . TABLS.II , , ..:... -, .v::-:'.-.. :-. •••,- '

A.

Ccunposition of the Hulti-h'irwrftlo Kuabor 6 Crebody f rcw SixDiaacnd Drill Holes

(Frost open fila roport, Hulti-^inerals llnitod^

Chemical Composition

69*11 wight

Ti02

P *.

***************

*********H*************

*23v/JV-.*' ^*" l*

Hgu ,,

t.A44*01

2*03

1.06

l.U

12*82

0*53

it

w

n

R

u

u

it

tt

li

tt

W

w

14

1650 p

o0

t'g

o8-o fi

1600

1550 -

1500

1450 -

FLUORAPATITE -f- L

MAGNETITE * FLUORAPATITE

MAGNETITE 20 .30 . 40 50 60 70 80 Mole Percent

FLUORAPATITE

Figure 4: Binary system Fe.,0. - Ca,.(PO. ),,F as calculated from modified Raoult's.Law. (P * I atraO. ^ ^

1650 r~

1600

o0

0)

l 1550rif-.l.o

1500

H50

MAGNETITE * L

FLUORAPATITE + L

/ \\\

y \\-o

MAGNETITE -J- FLUORAPATITE

MAGNETITE 20 . 30 40 50 60 70 Weight Percent

80 FLUORAPATITE

Figure 5: Binary system Fe30 -'CaJPO LF as calculated from modified Raoult's Law. (P ^ I atm.?. * . ?

JI continued*

2 y3 .....*.***.**.**.**..**.x

,,*.-.. 0.31

,...... 0.3H

..,.... 1.65

*!

tt

n

0

n

n

tt

n

Minuralogioal Coopoaltioa

aagnatite *............. 69*96 weight

* AJL.trw

*a..****.t*.*****.*...... 0*33 " "

3*15

C* Mlnaralogieai Coapoaition in Hasn&tito a*sJ Fluprapatit* :

Fma 3 Hecaat Hoi*

tltaniXoroua la&gnetita 69.96 76.13 93*3

fluorapatite 31.fid 53.S2 6.7

1'otal 91.84 ICO.OO 1CO.OO

papragaion TC

Tha fraeKlng point dapresaion ourvo for a concentrated fluor-

d solution can aloo ba c&lcyluted froei equation (11), if

of fluorapatite is known. Hcr^var tho AHf IB not kno-^n. According tolinpaon**, f\pntit.9 Xi^ltc* ara vory difficult to qn^nnh and con-

io*ticn, Fobnixz-y 13,19^3*

?g!?^^^^^^^^!g?^

17

f d. PA V carrot be uaad in the Clapeyron equation ( ——\

AHf

to obtain A H f

Nacken (1912, p.584) has experimentally determined the freezing

curve for fluorapatite in the presence of fluorite (Figure 6). Keep

ing in mind the fact that freezing point depression is a colligative

property, Nacken'a curve can be directly applied to the problea at

hand. To apply Nacken*a results the equivalent number of moles for

raagnetita and fluorite are calculated for various weight percent**

Ideally, the froeaing temperature lowering of fluorapatite (-^TFAP )

due to magnetite is directly proportional to the ratio of the molecular

weights of fluorite to magnetite times the -A TV^p due to fluorite*

H.W.Co. Pi.

X , —p f* r? —— /\ —J— f. ' - - ~ 'for **/' ^'z ~ —*-V l fap '

tt.W.7B.1 - /^ 1/3 231.5

Thus for a given weight percent of solute there are only 1/3 aa

Kiany moles of laagnetite as fluorite and hence the ~ A -TV ^Vie *-0* r*p

magnetite will ideally be only 1/3 as great as — ^ *TVap due to

fluorite. Freezing point depressions due to fluorite era read from

Nacken'B curve (Figure 6) for givon weight percents. The resulting curv*

for —ATpap by siagnetito is ooan in figures 4 and 5. To for fluorapatite

is not knovn exactly. The International Critical Tables lists 16300C

nnd so that will ba the valua

Tha temperature sr.d cor.po3ition at vihich the fraer.ing point

Ca5 (P04 )3F i- L

Figure 6: The system Ca c (FO,

40 50 60 Weight Percent

2, ( P - l aim.), Nacken, 1912, p.

|)Nacken (extrapolate] , Grit. Tables

1600

ml HI

051 rv* 3 wijet la the* outsctic. ?roci calculation!* the theoretical eu

tectic for tiv* s;.! 3taia lia&aatita-fluorapatita is at 1540*C and 25 mole

porcant or ?6 weight parcsnt fluorapatite. 7hio valua ia for aji

solution, aasuaving no h* at of raJLxing. Hovavsr, a jaa&net

solution ia not ideal aa s**n in tha e-xpariswntal results in a latar

th0 h*4ta o/ mixing will lowar tha sutootic

KiTKCDS

Th* eutectic wan1 apcroxincAtftd under three eeto of condition**

a) "otal presauro o? l atmosphere in an open systwu ila^natite

is complotely oxidi2*d to Ivs.'satite maintaining conatuut partial

oxygen pressure (Pog. Ba 1/5 stJs.) with variable coraposition

A, is, ?, c, H). , - .' ,. - .-. -- •- -: -., -, : . '•';'.v,;-..'-" ::'; : - -•b) Total pressure of l atnoapharo in u closed sybtftia. Constant

composition vaa jaaintained tinder unknown partial oxyg&n

(Esriea B, I, J).

c) Total praasuro of 1,000 atmoapbores trftnsadtted by

vapour at 9000C in a hydrothertaal bomb (iteris* K)*

A fourth s)wt of runs v^s rafed* by heating tha constituents with fen

flwse on fc carbon block.

Eight bulk oompo*ition3 of ir,flgn*tite and flaorspatito war* pre

pared. (Tabla III). Kvsibsr l is th* coapoaition of .V

6 os^body, (Se9 p*l6)*

R?^!^

TA-JL3 III

1'tarting Bulk :-'aipr.dT,it^-Fluorap*ititd Coapositicno Used in ,

fluorapatitei .~* -i' * r^4 A, i- --'

1

2

3•*

5

6

7

S

76.2

35

25

13.7

67

59 '

51

W

Tha bulk compositions

93-3

70

59

50

47

33

31

25

vore prepared

23*3

65

75

81.3

33

a

49

57

f rcsa carefully

6,7

30

..u50

53

62

69

75

weighted pox—

tions of B&ksr snaXyaod Ca^PO, )2 , Baker analyzed Cor^, Slid -300

concentrate fro.^ liinevilla, Kew York. The Hineyille

was used bdc&us* of its high purity (Tabla IV). Th^r Ca.CFO, )^ and

wars cofflblned to give the stoichiometric conpoaitiort oJP fluor&patit*;

92.,3 woislit percent CaO, ) to 7*7 weight percent

•TASLS IV

rartial Analysis oi* I-Uiw villa *uj^ndtito Concentrate

(K.M. Buttorfiald, Jlinin^ Cioologiat, Port JHnry, M.Y. - '.--.ritten coasmuni*

cation, 1963)

Iron tva j-^^ri^tito .**oo***.***.****. 70.27 v^t '^

Tot ft! i fen **#..*** r *****x.***.***. 71 *11 ^t ^

Iron content of pur*) j'ta^natita .o* ?^! wjt .?

l'iîi^r-J pU" 'poX'V'V-'-''' *.7r!0'.j -,. .t o j 'j ~-r;;.? 03 p^^''- i. " " o

S'.;j. *e-j;qT3n.T3 panfan ^-[r.j&ô ^^ Uf

apf?rc c-a-3 stttu p;; '^T-u TJ^ -1 fi-oj&q w.q-j

f oo eunâûsi u3fq ^y uo.ix quouqr* ti

*Ta ^5 l0 *^*fJE t? att

eovnunj

pua Suot "tso '

•(g

onp

M " p6ddf?oun

jo

t OT

padopco ut

**oâjnjf sn1^ esoaj pOAOtssa

canon JT ^vn uxu vôvo jo qêr eqt, *e.tei{

Jt*tj9fi(

/Up

psowpl s

*ccen

jc*pun g put; \r eeq^tet; jo etitu

pv?i v

^ lôj, cu^cisoa+v 6ls") V/ cimv

utu to

Sf: jo

jo

G uc-rfo trs? ttf

?^t{ *) pu-.? *j *r- Ro^jec ur

22

platinum crucible

nickel powder (buffer)

platinum capsule

charge

Figure J : Platinum crucible with capsule used in furnace series A and B. (Actual size).

vitreosil tubing

rubber tubing

N,

door

platinum cruciblestand

Figure B : Electric muffle furnace in operation (Not to scale).

T i -T i* y i .\ .j ..-j y

Iron .i&turation Tost ojT /JUtinusi Crucibisa

Crucibla ftiabar bar oro mn Aft* r

20,92/02

20.92953

20.23256

* Cont^siixuition found undar lid which wag present beforo run but

unnoticed.

Except Tor /i-3 ths cruoiblei* not gain

wight

of

oxidlcea to hematite In air at th* throshold twspsratur*

of ^80 C* Sine* tho ©xperimsnta v**ra conducted at tempiratures wuoh

higher than thia it wt43 necasiMiry to cJ*vl3?r a m^ans for prohibiting tb*

oxidation.

Thw ntathod ussd was a t"o-fold

gaa

passing through tha furmux* dit*plfi.c*Ki thft *dr within. At 1200 C th*

tions*ity of nitrogen is i^l x 10 ^,/cs. coapurotJ with 2,39^ x 10"*

i:.;a.7csu for air* If a steady flow oi' nitrof,*n Is passed into tha furnaca

d by this flow will bs yufi'ioiont. to overccrcH thd,, -^.llovh-1.;, idtro^a to r'-is;.-liicQ th^ air i.ncl cro*.U an

ol-TiOst p'ir* nitroj'.sn otnoaph^ro vtthtn the fumac*u Ona 220 cubic foot

tftnk of nitrogen will laat about 20 hours rt*-, :ur* sv^r: 1 ?-* r-ata of flow

of 5 5 sil.Airmta*

the

crnaotbld}j ,*ra prapar^d for ;i i*ijn, ftir la xmdoubtably prassnt in tht*

cr.u.r.^9 sjnd ft ha buffvjj* and ra^y not b?s r*mov*iri by th^ nitroijwn* Alao,

durirv. qu^nohin.3 the cruclbla io op*an to th* air* Sy aurrouiiuin^ th*s chargw

v-'ith nickal puviider tha oxidation is; nlrdiaia^d, Kick^l hug fe higher ox—

idtition potential thiiii divalent iron **nci so will oxidise in pine* of

tha iron for nil valuta of oxygen proswure (Fi^upw 9)*

(Fo O .Fa0

-0.7701 volts

V-0 "* 40*230 volt*

1: VI

tielg or M

o. -)xWntion PotentialK

273 -0.7796 +0.2110

750 -0.7961 *

CCO -O.iiOW -^0.1606

1

t-0'3

t-o-z

0-0

-o-/

-oz

-O-3

-0-4-

-0-fc

Niatn

Ouin,

Figure 9: Oxidation potentials of magnetite and nickel. Oxidation potentials are plotted vs. temperature for an oxygen pressure of .1/5 atmosphere. For different PO*.'S each substance will generate' a family of curves parallel to the original curve. Thus the ox idation potential for nickel will always be higher than that for magnetite.

i .1*'* /5**i5rVc" :y~J^- * i?SiJS

VI cor.tln-.ied,

1500 -0. (J2S2 +0.1259

;;.coo ~o.i09p *

This Ka t hod vas tested by filling a silver capsula Mth rsagrwtlts and

packing nickel povdar orotmd thd capsule in a platinum crueibl/j. Thiso

o w;..8 heatodi for one hour at cOO C. Hsaraination by X-ray

diffrscticn shoved that tha wa^rwtit* was not osidia'jd to h&aatit

Optical ozaTiin-fction did not

ie a sfttiafsotory buffer bflcaysa its oxidation oso

obssrvad; it doss not r*sct -with tha r^hcfcants in the

anfJ its oxidation potential ia sufficiently highsr thar4 n-.ag-

to prohibit gimtltafniouo- oxidation of tha laa^nstit^ nn^l

' - - . . ;--.; , :. - -.. ;. . v;

Series S, F, and G*"

runs vresra njad* opon to the tttmouptwr^ to obswrva tho

of oxidation* This gives* conditions of H known constant j^rtial

of oxygen (P o* w 1/5 aua*) eond a variabla bulk coapo*ition through ox

idation of r-aa

The rate of magnetite oxidation is shown in irigur* 10 whor* weight

of iron oxide is plotted ngainst logarithwic tira* f*t 900 C ft Ka

accortling to th*i following reaction J

U Fe0 * O., ^ - - 6 ?c^

pattern* andi- O I.U;oL t'-- C^.'j w^ Si'.i™ Ui'iiCl Oj'. . U'ij-i.-L/*

0.014

0.013

i 0.012t wc 0.011*i~1

0)

S 0.010 Cso 0.009•H

o 0.008•P ,c•H 0,00?

•H 0.006 - c•H

o 0.005 -

l 2 34 Time in Hours

3 \4 5/'-* ' 10i ' '.

Time in Hours (Logarithmic)20 30

Figure 10: Logarithmic plot of magnetite 'oxidation vs. time at 9000C and 1/5 atmosphere Pout Oxidation of the magnetite to hematite is seen by the gain in weight of the iron oxide. Oxidation begins rapidly but logarithmically decreases with time. Inset is a linear plot of magnetite oxidation vs. time.

I'itfi cotipiotfc oxic! At ion, tht* iron oxida inoroa.*^s 3*^ in weightov'C'O i; cciiiiist^ o*i;Uvic-o t;*xas appro Kia-iteiy J hours* -

Ail of tha runs --.^ra don* in n-ai'flo furnaces. tho charge s

in oitpaulsa vsolti^d tit on** '"-w. ,'irv:J partially criap*tt at tha oth^r

S (900 C) was i-un in ,fOlo tuhws li* wsn* icn.s; a^x! ^ r.w. Internal

* Series F (10500C) fend O (13OT (i) Kore nin in platinum tub*a

12 am. lorv; snci 3 sm. ex^r^&l di&raetar* Torsperatur* was Kassurod by

Ft ~ :-t IG.-h t^moccrtiplo 2-tid Hwiej-wall M;Jointorliton potent i oaatar.

Yha ran s ve 3*3 quenehed in sii

Soriw4 H, I, J

nuia ^.-esrai nada in a cloned ujstoai j-.pi:roxj!*atir:iT constant

bulk cotspositi^n fcnd unknown . partial oxygen prsaaurs* The ch'Argss....-:

vors ccnttxined in tub^a velded at both ends* -"ha internal volusi*

of tho tubas vaa reduced before b-sing \valdod closed to roaov^ excess

air sp*C3* Thia ^lao enabled tha tubes to expand duo to the pressure

•fexerts?1 bjr volatile 3 vithln thft tubs at olov?,ted teacerat^ros and

aainttdn'or.o atsic^phsry of internal prossurs. '3* ri* -3 K (900 C) was

run in ^old tubes H nsu long nnr*. 4 jws, intoz-nal dJLaaator. S^riftjj I

(.V;;00C) end J (l;3GO C) were run In platinum tubes 12 RRX. long r^nd

3 nn. cxtorr.al dianetor. tenperfttur^ was aaftsured using tho

coapla - j;otsnticKi*tcr set^p of -L -, I- , * runs v*re quenched

29

,'!'-'^

Series K

A hydrothermal run was mads in a Tuttle colo-aealad bccib made of

alloy 25 ("Stellita")* This vas heated ia a ni-ohrc*as vound split

core "Bavi Duty* horisontal furnnoa. Temperature vaa recorded by ft

continuous atrip

The charge vaa contained in a double jacket capsule. Two mg. of

(nw-gnatite, calcium phoephat*, and calcium fluorid*) plus ft s^g*

of vat* r wsrs placed in a soiled platinum tube (10 csa* long, 3 R&* o*d.,

shut vith a D. C* aro). Thia c&paula in turn vas contairwd in a

soalsd gold tubs (13 KC*. long, 3 asa. l*d.)* Th9 space between the two tubas was fillad xith raagnatite ponder (acting aa an oxygen buffer)

plus 20 sjg* water* Vftsn the double tub* was sub^acted to tha desired -

tot&l pr^Sfturd and temperature, tha external pressure yap equal to the

pressure built up in tha intarior., Flatinwtk id i&perseabla to oxygen

eo th* charge ia not oxidized* Any oxidation due to the diesooia&Um

of water end the production of hydrogen lone (which vill pas* through

platinum) i* prohibited by the continuous interaction between the hydro

gen ions and oxidation of the magnetite buffer* 7hua the gyatea

on the snagfcotite-hematite stability field boundary*

l, Tor u doserinticn of the afpAmtua see Tuttla, 1949*

30

Oxy-Gaa ri

C end D

Those runs were is&da by heating the constituents on a carbon

block in a high teaper&ture oxy-sas fla&e for a abort pericct. There

no means o? measuring tha temperature accurately during the runs.

The CO and CO- evolving f row thft heated c&rbon block evidently praventad

oxidation of tho raagRstite. Thase test* vor* nadd aa a check againat the

and bosab runs for identifying

Two conditions war* approodbsatod using Baker analysed

ccwpoeition l acd ootnpo^ltion 3 ^3 ro&ctantsto

i) jSSSiii&Ji' ^*t*d Rt an osti^ated 1COO C for 2. s

wars partially

OF THS

Ths products of ths runs wor* oxaiatneti by crushed grains. X-ray

diffr&oticn, and polished section. Powdar frow oach run waa raounteU on

slid** la artificial Canada balsa* (Caedax, n * 1*55)* Slide* pt

the rsactantB, HinevlXlo magnetitft, Baker analysed Ca,(PO )^^ and Baker

analysed CaF,, vew prdp*r*cl for comparison. Refractive index, surface^w

textures, relief, colour, birefringence, optical orientation, and ex

tinction angles provide the beat meana of identification* Table VII

liata the enssntiol charitct^riatics. A nore complete description is

below.

Plate J

Figure L, Type II Baker analyzed calcixun phosphate. Background is a mass of anisotropic type I calcium phosphate.

300 Crossed nicols

"i^'ir.-i 'i* He rt'-icJ i;Kk'2r analyaad calcian phosph-^a (typo III). Notice

twj hi;;h do^rey of JUiisotropisrA.

- 3''() Crossed nicols

Plate H

ffi - /-*i q^-. r . -. sfr*"? -t,.. '- . .-tt/.'- - - *-***' A V y '- - JcV : -*.\-v*i. -: -' - -. -lL,*-V-\ T ^V* *Vit-*y*y'y4li1,

? :l^^^^^#^S*ir- ^ --*-*-*r *--ift*sr fc •.^••^./*- •'-A\-'-'*-*''**L\- \,

* ™ *

t-!ip^:m-'f^'fVi^^.a;;'"*- s. '.'Siiiif.^---.^.- ;;'

Figure 1. Kssted Baker analyzed calcium phosphate (type III). Note the granular texture.

X 300

Figure 2* Partially fused Baker analyzed calcium phosphate (typd Dark vermicular substance is glass.

X 3CO Crossed nicols

(~3CO jsaah) FaO.F^CL

Opaque, black 9 5?.s^*tic, singular rrajyasnata {ibout O.QJ} ECJ. Ions

in cruabod

Jn polished ssotion it is an isotropic, hard (Tn&nag* hardnesB F),

y ninar&l.

from sa&gnatita by its mby rod birefringence ntid its

colour in raflocted lijjht* Uaxiadly too wall taixad with magnetite to

diistinguioh magnetically,

Kagjwtlc oxidation product of taagndtit** It i Q aa opaqu* oinoral vhich

is diotinguished frow sags^tito by its ysllow-bj-ovn colour in

light.

X and II)

Five differsnt reodlficationa of c&lcium phosphate csn b*

t^-o of v^hich can ba readily distinguished b^' X~ ray diffraction (Figur*

11).

TABIE VII Characteristic Optical Properties of tho Flu

, ——————————————————————— ^

MGlC,S.titu

w **

Y

Jjii

lil}.V

V

5'orni

angular

Cr*,ulnr.'scaoclin- le (?) cryat^ls

sxc-noclin- ic (?)

pcoudo-

granularjafcssivocdcro-

lltes

Colour

blackra d

brown

colourless

coloui'leiis

browti

colourlesscolcarlew

colourless

of Sxu--

pitted

BiSOOth

^-.frostedesaooth

Blro- frin^nee

vtiito

f.roy topala

yollovf

grayervsy

\

/interference

Isotropic

Bi&xifvl rrfj^*vtivo

Isotropic

Ui&xi&lUniiixifii

"'; ' :

extinction

,

x AC m 300

parallel

Optic*!

mK**^.tHMiJHU^*fr*MMM'*l ™ -r*-

lengtlt slovj

length sloir

lon^th clcv;

H*t**m*i

••MKUfcX''

1.

le

l.

1*

Indies s

1.616 ~ 1.C20

1,616 ~ 1*620

1*5-53 " 1,600

VII continued

V2

i, 2 it

'- vO

t-r-l C?

*J n

pO

-*-*

-y

fi

*C3

•i-

*vj ^i-?i *

ii5

3- fi?

O -rt

So••-i

1•**

1:3Oor*[OV-. r*

}S g-tljo o

1 S)

o c

i- -HT

1 ^

g l

9 g ox "* S*i? ^-* ^***

r? q'oo1i

(*\

r-1

O

}

V"""

•ioa^^

"*

i-*b6) f-*

•-f

r~5

'1a ,

o r-\ a

ij, -H -H

O

^ *

i IN

ia

c3 *i

-r* Cal

a

ff o *-*

r* r;

p095

•O•w'Jvf-i

Ou1 '

oVJ

i

S**Ja33X

ri

O

^•H

S

r-1

O!^

r— (

*S

O

tJ

3

^

^

^ S

:!5

O

Si

Ct

,^j

f..

1 '-'-* '

w

J* -H

C\J O

w*^

v*-H

**j

,"-J

^f -u

J -^

-- V

-o

o o -a

C

T-J

O

'

fi

CI

(M

rtato2

Si— ?

O

O5sx- '-iCJ

*mci•—

i

tlJ

33

Dakar oxmlyaad {^(fO, )2 cor.tftino two polymorphs (typ-aa I and 11).

lj^ Snail (0.015 ssro* in diameter), isotropic to slightly anisotropic

flskas* j-'-sniiiuat relief .in Caadax* -iAfrnotive index is 1*616 ~ 1*620.

iftiii? sawpls haa 92 /S of ibis tutorial*

n*. I&rga (Oo02 - 0*04 aa, lon^), anisotropic crystala. OBlicni* ex-O

Unction (XAC * 30)| lon^th alowj biaxial negativ* (monoclinic ?)

with J& *- b j ojtiu axial plena biaoeta thn acute ivngl* (hok}A{003|j

slight diapersionj birefringanca grey to pala yaliow| refraetiv* in-

same aa for typo I, 1*616 - l.W00 Bulk sampltt has 8 r of thia

jtla*. Isotropic; granular textur^j brovfn colour^ paeudosorphous S

clinic (V) outlina* This ia probably ^ transitory typa between typas

II awl HI* At higher to^poraturea this fora becoesa ariiaotropio end

length fast*

m* Kaated (^10000G) fiak*r analyzed Ga (rO, )2, (Series C}*

No typ* SI frisgaenta y^an. A f^v typ^ II rclio* prsa*nt which are now

a granular variety of calciua phosphate (IJa). Many aniaotropic granxdar. .

jriassds with pitted surfac** and wavy extinction pr^s&nt* V*ry little

isotropic ja&tarial oddn. Biiaxialj birttfringsnot* gray; refractive index

Ic600 ~ 1.60k.

IV* rartifelly Fused feker analysed Czu(rO. )-, (Sorios D) i' — * 3 w ^f^saes ol' anisotropic grains ceswwtftd toother by iootropic phoaph^te

gl.;.-9a cii'liXii th^ I5H99 fe. cellular structure* ixmy anifotropic highly

truri.ipHrantj, Graooth-surr^cad flakos prasftnto UniaxiJ*!} lov relief j

rofrsctive Indax 1.5-'^ ~ 1,600*

\u Calcian Phosphate ;'

I'haaa w rs found only on t,ha high terap^rftturo runs and roprasant cry~

argillization of caloiua phosphate i"rc?j a glass. Tn*y ara dxtram^ly fin*

end uoieular, li&v* purallol extiiTiction, positive inlier in C&e lax

length alow,

In j^eneral, th9 rafractiva indica* dacraAse with Inoroaaing

r-tfaaparatura polymorphism whil* the anisotropic ijicroHaoa

fine granularity obB^rvad at lov t^saperaturs is obsant at high

Fl .orjtf eBakar. KH a - g

Thay fcava a

occurs 09 isotropic grains with a pala yollow colour

relief in Caodax, K^fractlvs indsx is l*J

Fluorapatite was) oynthosi&wi at high twap*ratnr*9* It ooeuro as

iiftiaotropio rectangular, scmtlaaa priaoiattio^ orystala* It has a high

positivs mliof in Caadax and IB length fa*tj uniaxial} birafrlng^nca

K*ny -Asr-ft found to contain Inclusions of frlM* ehowing veinioular

rlatft II, i'i5.urd 2)

individual fro t.^d or smooth iootropio grains tind aa

35

Baker Analyzed

Heated Ca0 (PO. )- j 4 2

Type III

Fluorapatite

-4J

35 34 -33 -.32

Figure 11: Comparison, ofv X-ray-diffraction patterns for various phosphates (Cuk*t-radiation). Notice the, shift in.the starred peaks compared with,Baker analyzed Ca-CPO, L and the appearance of a major peak'ait, 3p.9Q 29 for heated ••CZ

5?^^^^^^^^^?^^^^^

vs reticule s within hich t^m^r&tura o.-ilciua phosphate nnd fluorapatite.

fioaa jir-sina show poorly dsvalop^vi conchoidal frsctura* i^jTraetivs indax

i s 1*636 - 1.6/.Q.

t? v ~,v r) '

' |9

Th^aa includo both the open ond closed syaton run? and thos* don*

in th-s cocy-v9ia jTlaaja* ?ha results aro plotted on Figure 12 and

in Tabln VIII*

A and B

When tha products vara oxaiainQd, they vara found to ba in ao o

S^riaa B (1235 C) vaa nore strongly sintered than se ria a A (1050 C)*

sxaadnation show* that the opaquw ore minar&ls wore

with Cftloiusi phosphate and glass* At fcft* highar tfciaper&tUra a

brova halo occurs in tht* caaieunting aat^rial ijawiifctfcly surrounding th*

ores. Thia is tha "bnysm reaction halo" of Tabla VJII and ia in-

tarprat^d as a reaction butwsan th* oro minwrala (wagn*tita) and tb*

encaaing ceawiting material* This is th* first ot*p towards complete

diosolution of tho raagnstito by a liquid (glass).

fieriaa C and D

Although no quantitstivo valusa can b^ attached to period C ar.d D

dna to thoir t^-nparat/jrrja not bwinn knovn^ nevdrth^I^sa, th^ eanv* trend

Resulta of Huns et, IVj Atmosphere Pressure

-CI

C era po sition

12

3hs

2 3ix. 31

31,2, 5-S

i,3 8 5-ii

Time

IShrs.

12 hrs.

2 fflin

2 ala

15 hrc

l.| hrs

?e*|*rttttre(0C)

1050

1225

Heated in cct} gas floss*

i-artially fuuoci to oxy-gas flftmo

900

1050

Thaaes 1-resent

c*3^Va'

x

x

y.

Ile

x x

x

x

IIIxxxxxx xx

(x) (x)

(x:x

3V

xx xx

x

x

alcrolit-ai

x

xx

•:.'' X

X

V ;

Urownro action

trttlo-

(x)x x

-X n

X

x

x

("Ui^etite

xx xxx xx

Haaatito

xxxx

Tx)(x)(*)

- ill—(x)

_ IJCL.

x

x

Fluor-spat i t s;

(:-.)

(x)(x)

__ ( }M

(x)

ftlaae

(x)e

y.

x

continuad

Cabla V

III Continued

,'C(-" iXg g*HK

(

Wr~

*

•C*

pi-Vj,

^SJ

o1hos# s1J-t

}^r!HO•-"•1

J..

j :::

e* e-) *;r-l O

0*4

. -0

**

-^!

d!.' fi..

^o *J•ri*ltt! fi5?V

**

O

*a

•^^8SiA^:g•H

C

tJ

r-* O

*3

c^ JKPS*

' si

5t^1Cf

•3^*

t-f

f t

t~t3

*-tt-i

HPc;o1 i

^ ^i

St

*~~"

-"^

-^^

-^

W

W

X

XV

^X

" N

^--

**,.^

X

X

X

X X

* -

"x 'x

x

x x

x x

xx

x x

x x

x x

8tnr-*B(0

t^J I*Jc

r-1 C

,' '-A

O

fO

o

x*~*x•^xx8ON*J

L.ja"7*"**?tA

•N

(NJZl

2 3

M

ii x

x x

x x

x x

f~*

^x

h^ ——

——

——

—X

1

XX

X

X

X

XX

X

X

XX

as*

-K-./

W^ **x

r-j c^

v\

o

r- -a

-

X

X

X

S' X

X

'H 'j?

'x

*x'

X

X

-X

X

x

x ,x x

^ ^

^x,

rf-V

*— \.

^K

J*

-x x

x x

x^—

k *-N

*—

-v .—

x

x-~

- j —

— k

X

X

X

X

X

X*-—

*x

x^""

ss

ott*rv*

tj

r4

IV

Tt

vO

C-

ftj

- ^

;!

.*i3 oS

ciS3 .

,

*-^

^t....

...:...

...,.,

is 33rin as in A ynd B* Calcium phosphate rdcrolites,

and #lasa occur pradcsainafcaly at hi j' h

In osrias C, lo* temperature (type I) caloiun phosphate occurs in

large quatities fto s**©n in optics and ra*:f,?iraed by X-ray diffraction

pattarnJSB There is also some type IJa. and high temperature type III

caloiuai phosphate. This show*) that the t*japftratura to which eori^a C

was heatod must have b^an low^r than th^t which wns needed to produce

tha typical t^/pe III calcium pho*phsto frors Uaker analysed rsagsnt.

Seriaa K, F, ftnd G

Theaa runa v^r^ n&de open to the ataosph^re* Conaoquantly, th*

vag oxidiatsd to hsaatito*

Borios H (900 C) produced no liquitl phase* (glass) tind 'so

beilow tha oolidus.

Series F (10500C) likexiae did not fora a liquid phase* This

tio**i* not Agree with serioa A (vhich was alao run aa em open

eyotem) v/hera a minor liquid ph&so waa product* There la probably

a rate of reaction probloa Jiore. 3ari.es A was run for 12 hours and

hfid nora tiwa to form ft liquid then did aeriaa P which ran for H

hours* Thus calcium phoHphnte vas oxlstin^ aa a sj-staatabla ph

abovd tho solidus in series P*

O (1300 C) vft3 not, as* wo 11 sintered aa ite closed

rt 3 (B* ria s /; ai;d J)* This is probably bsc&uaa th* therao-

ci' ; s.n Cja yystaa } D ."iiri'^rant i'rsw tbut of a closad

'if T. w. ;Kt^Js

37

syat-ira* Also,, tha chemical j.ropsrti-.ia of the aystaas hfiw&titrt-rivior-*

apatita and fcagnstitH-fluor&patita likely are not idtmticnl* In spite

of this f tha tondancy towards t* liquid phuaa is evident in these runs*

i;03Ti3d f s, I f fmd J

l (1050 C) cind J (130Q0C) war* Piade in a closed system

so giva important inlora^ttion on th* aystew

ea H (900 C), although It was run in sealed gold capsules, was

to oxygon. Gold la ^naeable to oxygen ro suiting In th* ^

bning oxidiasd to hasiAtiiaH Series I e.nd J ve r* run in pl&tinusa c*p-

which aj-e iap^radiibla to oxygen.

?;erias H (900 C) gave the SBSXJ results ^ sort.09 K. Thoa* rwns

both subaolidua with no liquid ph?-9d pi-ojiont.

Series I (10500C) was run above the oolidus as cioMOfiatr&tad by tha

squall waount o! liquid (gluaa) vhich fonodd* The 3d runa had tioro

than either of th^ analogous op^n s yates nina, ser-ioa A and K* Th*

ralationahipe did not proceed far enough in serio^ I to do-

tho eutaotic cOtapoaition.

J (1300 C) ^ave sxcallont Halting roaulto* A large a-r^mnt of

Klrais occurred in till the rutts ss *-oll as type IV calcium ji

i-ncl thy brovn ra action halo. Xn run J ~ a rounded na^

Oound e^ib*ttW-3d 3n a coaj-oe grained ."joxaic of brovri Civlciifa phO9r.nato (type

;tV) ;nd glri.-,?!. This indicnt^.i t h. it th* w^ttiilo n^netitg t*aa Roin,? into

in tl;a ".Quorate*..! ta * .U-rjid" ntwbilihy

1700

1600

1500

1400

0" 1300V5-(

| 1200JM•aQ 1100E-f

1000

900

— . "' ' ~g•: .;- ' ~

... ' "' . i _ —— """"L.""-— .^^ LfQUIJV ^ ~~~

\ x-"" IX x i

N x "- \ Xrtt ' \r\fc (At /Kt ijt . l . .. t "OR og OJ--/6? og o| 0^ 0 ft*r ^ r X 'F T ^ o t ^ Ca S k/ a ' - G ft X AV- \ /- . ' ta r r ;

: ' \ ^ 0. .Jr \ :•^ AArtG.Me-nrE w -^ LIQUID 7 FLUOR^p/irirE^ t L/QUIP j

:~ rtt ttt \ /Kt nt r\t r\t u L; :- o? ©cfc W c ©c ©c (D c efrefr1; t G. ..a a a a R G^ Mrtawer^re.ts) -h FLuoR/Rp^r/re ^ J

1 x^ x^r ^fr "c"1 ^ ^ ; Ji t f f . i - i i i ' i *i ' i i \ i

Mt MagnetiteHTI HematiteR Brown reaction

haloC Calcium phosphain J-IicrolitesP" Fluorapatite^ Glass

© Series AO " Bx " H

(D " IO " J

MAGNETITE 20 30 40 : 50 60 Weight Percent

70 80 FLUORAPATITE

Figure 12: Experimentally determined equilibrium diagram for the system magnetite- fluorapatite under one atmosphere pressure. Exact position of liquidus curve is unknown, . . ' .,,, ' -\

Caleiua phosphate jsdurolitaa cild not fora oxtansivoly in

J baoausa thas^ runs vara quenched in cwircury which dioaipated tha

howt rapidly ircsa ths capsule.

K

run (compoaition 1) was nade in thia aarioa at 900 C. X

oassntially the saw as for thy runa at 900 C and l

preaaur* (series S and H) except that there waa no ox

idation. A liquid phaay did not fom indicating tbs run wag b^lov

solidus.

n of th Ph

3inco the suparaolvui* runs wsra iîido during short lengths of

It. is known that equilibrium V#*M* not Htt&imtd . Thia diaequilibriuBi can

be seen by the inability to apply tha pha&a i*ul0, f*p**c-*-l(P

constant)* Tor Quilibriua, the number of phasse ia 2 (3 at the eutectic).

^ in the euparsolvus nina th*re we*re fca isAny fee ^ phasâ present

hoRsAtite, gluss, I'l'.iorap&tite, WK! calciuia phosphate). Th*

of reaction is ao alow thfct jôtttfitablo phases persist a long

42

SUrfcAitf /.:*D C01*CLU3JC^S LH TrfS THEORETICAL AK7) 3X?;5:{Jri5KTAL IsORX

I? a fluorapatita-wagnatita swdt io conaidanad 03 id^al tha binary

tio can ba theoretically calculated from a modified Raoult'a law

(p* H 5 o '?hi3 calculation places thfc binary outftctie undar ono at-

aoaph-ara pressvis^ at 75 wola percent laagrwtita and 15^0 C (Figure 4)*

a i'luorapatite-oagnstits Bwlt is not idaal* Both

apatita and magnetite havs larg* hsats of sixing which deprssa tho

eutectic temperature e Sxperifiwmtal studies under ona

prassun* show that the eutectic tosBparatur* ia epproxita&t^ljr 1P(XX)OC

(Figur* 12)o It ia strss swd that nons of tha runs v^ra coaj&etitly

!iovsvarp the high temper&turd runs (10JOOj X2850P and IJQO0) wet*

occur in tho nins at 1GJSOO0, 12B3OC^ and 1300O0 v^iich

ara not found ia 900OC n?na or in tha starting Kiatariala.

include high t9ftpara.tura polymorphs of calcian phoa^&t*,

Kiiorolitas, glass and fluortipatita* Both option and X-

ara uaed in identifying tho phases*

A oo&p&rioon oJt nma at 1050OC and at 1300OC ehovs tha following

oba^yvatioaa*

1). Lack of the brown reaction halo at 1050OC and it* pros^no* at 130

This halo i.a int^rpr^t^d BSJ a sup*r3olidu9 reaction betwddn w*gn*titfc

phosphate o

JIov York.

Kuch ir.orft Anisotropic calcium phosphate at 1300 C thwi at 10JOOC*

3)* Kuch nor* glus* at 13COOC than at 10500C,

4)o i'rasrsnee of apatite crystals 6t 1300OC fend lack of then at 10^0OC*

(Sxcapt for ont* crystal in A~l) e

5)o Presence of côitja phosphate microlite?} at 12S5OC end lack of thea*

at

6) o Lack of typ^ XI calais phosphate at both 10J00C and 13CX)OC*

Huns swkde at 900 C dhow none of these offoota (oxoept for ob-

6) Mid 00 wr* below thd solidus*

observations point out th0 fact that tha solid to liquid

roaefcioa haa prograsâd much further at 13CO G, Ko'rfftvor, socw reaction

has gon* on st 1050OC aa evidenced bj tha amU amount of glass found*

Tha'runa at 1050 C vara probably juat abovs th* eutootic tomperatur*

vdthitt the fields* of "solid plus liquid" in Figure* 12. 7hus th*

t&siperaturo for tha syatea aagn*titft-fluorap*.titw la probably

clos* to 10CO C imdar l cttsoaphora of pressnra. Calcium phosphate

oeetira as a jaetastable phasa in tha "solid pl'ju* liquid" roîon dtt* to

the ahort duration of tha rtuis, fluorapatite dod9 not occur In tha

"solid plus liquid" region of tha 1050OC iaothora bssausjs thor*

not tima for it to forts at ouch a low torapdratur** If the run had

be&n -T54de ovsr swaral d&ys no calciuia phoaphata would remain and thera

would bs an abundance of fluorapatite and glass (i*a* tha reaction

rate i a alow)*

lo Clift to rapid quanehing in ia*rcury, no niorolit-as i'ora^d in th? runs at 13CO G (yoria^ G nnrt J)*

mont*.

44

?ha hydrothermal run at 1,000 ivtmoaphoras vAter praaaurs and ?COOC

( od ria a K) gava tha aa^a results so th^ dry runs at 9C00G. Tn*r*ror*,

this run w. s b^lo* the solidus, V-atar prsasuraa up to 1,CCO atsiosphdras

must have littla or no offset on ths neltins relations of nagnttit* and

none of th^s rune vara coaplatoly tssltad it ia dif ficxilt to

datarain* the eutectic composition. The diatribution of fluorapatite

in ssxdas B (1285OC) and J (i;sQOoC) givss en indication. Fluorapatite

co?3scaily oucxira in cosipositions 2,3*7, and O* Thssa vera probably in the*

fiold of "fluorapatite plus* liquid"* 80 fluorap&tita was found in J~6

indicating that this ran v?as abov* tha liquidqsu Very sdnor amount*

of fluorapatite octur in 3-1 *md J-5 us u^fcastabla phasds* ?his dis

tribution indicates that tha fluorapAtite liquidus liesi bdtw^an 41

arid A9 v&ijjjhfc percent flworapatite (i*e* betveen compositions 6 and

7) at 1300 0. 8y extrapolation tho eubuotic composition is at approx-

veight percent fluorapatite*

NUHBSH 6 01183081

The Kulti-J^Ln^rAlti property consists of a groap of 72 cloima

in Lacknar -^nd ''-aHaught. To-^nahipa, Diotriot of Sudbury, Csitario. The property ia about 3.\x ;iilo3 by graval road northynst of fteiwjgos atation

r-;: tt-.4 ;;-.;tin line ox ths CnrjAdiin ;-acific "ailvay. Tha to^n of Chapleau

lios 15 ttilsa northwest of tho rulti-Minorala c sesp anci my by

frtra Kojftôs "by road or by railway*

Eooncrajc. A B MO t,^

6 orebody contains approxl^fetdly 5 million tona of iron

l, phoophoroua (fluorapatite), and colurabiu-ia (pyrochlore) or*.

composition of ths orebody is llst*d in Tabla li p&ge 13* Currently,

officials ara invêti^tin^ the possibility of leachina: th* ore

vith hydrochloric acid to produce 75 ^ phosphoric acid end s high grade

iron concentrate* Columbiua xdll bs extracted 59 s. byproduct (Korth^m

Miner, January 17,1963).

Ganaral

property i fi located within an alkaline x'ijj^j coaplex about

thrfla /aili)a in dia^ter* Tha coaplox consists oj^ rinâ of olk&liaa

plutonic roeka outlined topo^r&phicstlly ;by proainent hills

the panoplatnad Archean ^jneissas (Plato lil, Figure l)*

outermost rii^ is composed of very coar** naphalin*

vhich intrudes ths gneissic county r&ek. This oy^nita separates tha

gnaiaa froa ?in innar ring of daris alktilina rocks coneiating mainly

of foliatacJ malignite and ijolite. Hodder (1961, ?.A3) boli*V93 th*

s to rsiproasnt "-i osptun o'f th*j regional gneiss that h^

s"- :"inc^ of tVK-.htilina nyor.it>'*. This setum h*9

lo Fen- .'s morn co-r-aploto description t5^D Ho-Hdyr, 1961*

Plate III

Figure 1. Aerial viaw of Henegos alkaline ring complex. Complex Is the

hills in right foregroxmd.

. Northeast f.ic* of open pit, Xult.i~.;T''.-.ftrels i-wiber 6 nMgnotlte-

orebody r Notice the faint, c'.aaorted bands above and to the left

S3ig8^

/*6

d to totten r-dvH Giotaaosatiow (i'onatiaation) identical with th*

lsin ol" lha gneiss out- s* id s tha out** r ring of napholino H7*nit

IkxiisM or mgrHtite-.?lu9ra;,-.atitf*, carbonatite, BEV! a fa-y putch** of

perthosite lin vrtthin tha:ja dark colouryd rccHs tn-J dip ato-sply to-

the c*intr0 o? tho corav-lex*

cor* oj? th* alltalina cciaultix is u

syenite enolosad by an efjuiiirc-nulskr nephalitio s/onito bordor

concentrio with the w&jor ring structure, dip

at. low sn&las away ^roa tJw centra of th*

According to Hodtter (1961), th** n^ph^lina ayenitas ara rih^

T1-J& jssgnoiite-fluoravixtit** bodies,

within tho svalignita eeptiw or* OOR* sh

Caolog? of

I briafly tjxwuined th* Num'oor 6 niasn*tit**-Jluorap4itit9 orebody in

July, 19 62 joist paid particular attention to ths northeast fat* of

op*n pit o (Hate lil, Figuyo 2). Tha body is lenticular,

f,CQ fs&t long find 230 f yet in surface vddth* Zt ccnsiwts of ft inaia mass

(similar in shape to the hull of A bo&t with A deep keel) end two

sw-iilior tttBchJsd offa'Sta* Pasjplos if^re collocted ri*on tho north off-

f-.oit, Thl'.i off oat ntr.lk*s R^rthi-e.^t encl div!* 60 dissrf**3 northeast

th'i contra ci' th.i ttl-rilir^ ccr.:pijX(. Apprc-lu^taly 25 :'-c*t of oro

iix::oB?;O .Li wh::- pit i'^c^,,

47

The wall rock of th^ orebody ia on equigranular naphslino sysnita.

J3oth tha uppar '.rwi lo^r contacts of th^ embody ara sharp, aa exposed

In t bs pit. Tfcsr* is no r-atlucti-.-n In grîn 3i33 of oithar typo of rock

at ihs contact* Thi3 sharp contact, does not exist averTvfh'irs as ovidaneod

by diarsond-drill hole R-65 which penetrated a short section of brecciated

roak ceesar.ted with apatite (Hodder,

Irregular saaasâ of ijolite ami nsphaline ayenit* occur with

in th'j orebody* ^listhor thdax* ara xanot Lths or intruaive tonguos la un-

kno^w* Mats V, Figura 2 is a photondcrojjrAph of oaa of thoae

of ijolite. It is very fine srînad consiatinw; nminly of pyroxene

Tho orsbody is eassnti&lly coarac-grftinad titsniferoua wa^ at it* and

vdth ir.inor anouiits of pyroxan*, pyrrhotito, find pyrewhlora

p Figure 1)* Tht* fluor&patitft 19 emerald gr^^n in hatid specimen

contrasting vith the black taagnetita. Th* fluorapatite occurs as equant

aubhedr&l grains with SOJSA elong&ta auiisdral crystals * Nickerl (1955^

poO* la hia metallurgical study of the or*, states that the na-gnatito

contains numerous exsolved ilmenite JUussdllaa dovn to a aicron or leda

in width* Th* ilwenite also occurs aa aep&rat* minute grains in th*

ganûa, Boversd iaon**8 rich in fluorapatite with little R^^ntttlt* occur

in tha orabcxiy, A. very poorly definwl bawrsdir.^ ia nrd*ent in

ih3 paruênetic s^quancQ within this orebody is varihbla. In the

"-...•...iriatit.-i-i-ich sonîi, I^r^y Ha^m tita polyurysti.Ilira "knots" occur

-!;-j vvlX aw fS:;ar ^r^ln^f' crystal -Jo ^r: t, ho,™ a 2ona^ ac&tity ^pp

M

to ba interstitial* In thy upatit.e-rich zones ma^nytita appears to be

interstitial to apAt.it'* although relation?- hies ?.ra soswtisas confused

occurs both &S coarse grains ititiiraix-^ci vith fluorapatite

end ni* narrow vsina of uiraost purs rrAgnatXts vith ninor apatite* I'hasa

vsins occur in the Ijolite juaases within ths orebody and also in tho

ill nejiholine ' syarxite (Mate VJ, F'i^vuro 1}* Veins vi thin tho

sysnits have borders cewtosM of nachalice, ae.ietln^-augite,

i&ti biotite tô to t.hr0a tiês &S vidw ba th* v*in (tlat* VI, Figura 2).

Those bord.-rs havs the oc^poaition end Rnh*ilr:vl er&nul&r taxtura of

ijolito, :;Jid wera probably doveXojred by ft reaction b^tvaen the vain

rsftpnotlt'i and the nepheline nynnitft* A possible reaction r^.ight ba th*

following?

5(K,Na)AlSi3Og * AH20 * 9(Fe,Mg,?i)0 * ZFogO, * CaO alkali faldwpiwr *" .' ' ' v\ : , *" **'.'.' - ; ' . ;-- :'(Po,Fo,Hi5 )(Si,Al) O, - 4K(Ps,KS ) AlSi O^CCM) . aogerine-augito biotite'3 ,

Ths ccâpoaition of ths aagarins -augite is nodifiod alter Hodder (1961,

p.32)* Jri!5nt nagnesixsa, titanium, ijnti calcium oxidaa and vater ro—

t naterial which has boen addud to ths naphalin* ayenit* from tha

vsin*

Tha wall rock of ' tho ns^giatits-fluorapatit* body ohovs very littl*

sit* ration ^t the contacts (Plate IV, Pigura 2)* The nepheline has

be-in altered to cwicrinite *nd soolite with minor carbonftt*.and leu-

cito (?). Thia alteration occurs in s son* about one foot wide* Th* z*o-

litoa an? cono^ntriiÛ vithin oivj-hxLi' inch ci' tha contact* Cancrinite

iat-.:r.iticn i 'i prsxlotainant baysr/l that, ^cv-^* ^7-!o (;lati* IV, 3'iûrs 1),

;-4ui o'/j.,, ti.'o T'jat i'rca t'a-j orobody coatuctj in tha footwall tiwl

Plate IV

Figure l, Nepheline syenite wall rock two feet belov footwall contact. Per ** perthite Bio ~ biotite Ne ** nepheline Aeg ~ aegerine-sugite fi 6?23 Crossed nicols

X 60*':'i A S^-?^* fyfr

Figure 2. 1,'ephelino syenite wall rcc'c at the orebody contact* Nepheline is ccnpl-:;t3ly altered to c':r.crinite and asolite, Alt ~ cJ.tered nephelinersr - p--rt.hi.te A e p ^ t.eirerin^-Rxi.rite 1-it ** magnetite

K 2 1

WKSJ?

Plate V

'"Syf^W^:3??x3^

Figure 1. Magnetite-apatite relationships in the orebody*. Mote the brecciated, non-hexagonal outline of the apatite (grey) and the

fractures in it.

X 21

Figure 2. Fine grained ijolite xenolith (?) within the orebody. i\reph-

ulln-3 is v.-hite. As^srins-augite i;j dark.

//' 6732

X 60

Plata VI

Figure 1. Small magnetite veins and pods (blue) j.n the nepheline syenite hanging wall (light grey). Mephelina syenite is pyroxenized

et the magnetite contact (medium gray)*

Figure 2. Fyroxenised nepheline syenite in the bunging v?JLl near tha

contact of s small magnetite voin. Koto the Ifick of fe3.dspar "nd ths

abundance of f;8j-;erine-augite.M.3 -- r;; :jp! ** i'.-aultt'i liio ~a biotite

;/ 67/0

4?

iV'-iiy, show no alteration. livery i*i i-. lixiviation o:' foliation

D th.; ^.i^jvî-nt ol* z'cic .i.;sr litha* i .d.C3'Oi*copic o;-. :-.fi" ration rho.:^

lh:.' border;* oi' ;so,uv o.' !..ii* iivvîi*'^ c ry.it;,;, l a {^::ci th-als* iU.t!;i'~

counterparts) hav* beoii rôry^taiiiiiiid du** x,o st

T1 ..* - ' - ' - ^^n ,^f ^V'^.or r^ ;'

Vha Kiî^tits-fluor^p3l.it^ oix'bîy it intrusive into the

wail rock 33. ovid-mcsid by t bs* sh^rp contacts anU thd

which fc-aa c^m^ntwd by tluorapatito i!i clrlli-hole a-6:5 (p. 4?)*

Th;j .•ais^fjotitw-ilcwTsit.a oxaoiuticn ruj;ort?jrt b/ Nickel (1955^ P*4)

be u?-2'Jl as H gôthATOcaatar to i;?jt nn eatianta of ths rainitrixua cry-

ll2;j-; '.it5n tosiparatMrij of tho r-ajjnHItOt. The usa o.f thia goo-

orMtd?' dapsnds on th^ atoble ^q'iil.lbrinm of oxsolv^xl iirwnite

jjuiijnetita* Sine - i aosje iX'ranito ia rep-ort-od in tho gangw* by Nickol,

TiC,, ovor the**/ contained in :,i^;natit8 at soliUua tostpfcrAturos,

present* Trms th** aaauy v^lue for TiG^ giv**'1' iw Tabla li (p*i3) can*i

be plotted on a eurvd Tor f'oÔ, ~ Ti00 oquiiibriua va* ta^p^ratur* to3 ** *•dve an ipj-rc&eh to thn minlmun cryat^lli&atlon to^jaratura OA th*

i;^titoo' Figure 13 is In^raOifi':? our/a for uagr.Atita-ilssnit

Mwtry (1955 * p.!vo5). -* iv^n this it is isasn that t,h^ .âcnstit

.:-..- 'COOC| ho 1.? fir t.bov* is v-iVnovr, by this net r od o Tho cxf*jrin'3rt

r^5'.iltc5 c r ^y^riLn:! ^ -s ri i s r i:; t b i s thefii.0 3M.!.,vi*st t h/* t thxs ftiniT;-^ te?ap~- -- ti' - *VT j.h-v •.-.-: 1.M.\-' -;-r , flvoi'.- ratlt--^-^ •rtut.lt'* " Ixt.ur?* l a abavit

o oQ)

lMC)o,

l

5 10 "15"

Weight J5 Ti02 in magnetite

Figure 13: TiOp in magnetite in equilibrium with ilmenite as a function of temparaturey-TiCL content of magnetite in Number 6 orebody is about 4.5 weight percent giving a minimum temperature of 600OC for the crystallization of the magnetite,

Ingerson (1955, P-3&5).

51

r.on J ov:; v:d ; ':\!\ ••v.:.*/. b-; i*, j , Of/3^0 ev-:'! ul'J'^r oori'ilti^n.-i of hl'-'h

In th.* li^ht of yc*th ^•ot.hf.vrur.MU-y ...".-5 o;;j.-;rl"vr;tsl synthosaa th-a

lov; ôap^rufcura a ."v* ^ ration fit t h*) contact of th-j orvbody iip.â^ro to b*

ô:.:;i,lou3 ;j.-iirt5.c\ii3.,"il,7 îtn r:j;'3: iano8 to t!î osourTijnoa o; seolltos.

;a55a (1961) In hi.^ d::vr;^tl'j;ati-n or th-2 nyr,tJ:i Co-.-.bC aho^ 'tSiat, th

ntnbllitv field of th') :u:c":.-'.les rjxt.on.J3 to H -nvxirsa^ of 500OC and J.i

of ^r-ssrara, Thii*, Sn-Mc^tos *hdi *.hy

war; o:;rol?xi'id it. tc^-^.v.tvi.v't^ lowi'-r t!r-.;i ^'X". ''i. I* K y ^y arg.'MOrt that

thn :ôl.it-33 roprcH^nt a ?,;itcr cltoratior. V'jt if thia in sos th?n ^'h

•.iw lb.';y coriconlriit*"! ^.-xihin a h.xlr'-int'h Kon'! concorxl.-irj* vrlth.th**

bcxiy? -. n i w? logical oxpl-mati.w i 3 that th--s a-ftolit-sn w rt* pri^try

ttlter'iti .'n pr^,tunty of th9 rmr.ih-?}.Ur,^ erî .vm**i 'ÔI-TTWC! in a hydrated

o Th4 s-iscb.^.lirKi h-ur. nl'io u.lt*i t^jit to cstncrinitii; hovovor tha

;*j.yld rsi A:\osi **h i pî 01." th9 ialn-srsla d^p^nd? on th-s exacfc

composition of the cancrinit-o 63 t)w vsric-aa polymorphs of

disTarsntly. This ccapositional infoww-.tion Is

not knO'nllo OSJfiCjrinlte |^;ia,,-u5\y 0 /'l-*-i*-'J-^'~'m \"vo*"'*v^l o l r-x^^.t. 4—.L—^ i j,or^5 *n2 of t ha carbonate ion. ?hsi ore bearing '•wrltxm wiat havo had

hij;h c-:;rbanato content 0 The -ninor amount of ctvrbonut^ found in ths

n prcductn of the nepheline? supportti thip.

1. iJti'o burley, L-ftjjwrtwyMt oi' Gaoio^y, Ho.-.asUsr v''.niv*i*flity ?,, - . t ,. - l- ' ,.,, -, *- r ~\ i':'- "! ^ f.i.- : i -i:-j.:.-.tiO*!j . "j S. o l/' .-o

titvj e:.Ancj;'j-:-x'..-j;j tiro a .'l..'O i ;uov.'n*

Fre,f;i fi old observations jind ox^srisiontti'. rssxilta it is i;.tp033ibls

;';;r th-2 cr-3 to h-'iVf* orif/invtad ss an 01--'.* ;:uHg:',u or- o. "rsalt", vheth^r

rJ.-'iijiblo or Ira-dseiixLiJ* Th-srs l?j no ovivloncw of irvrdsoibls rv* ^na t it s

ir.o apafclta In Uw orebody* Tb*j ailicti contor.t cf ths oreboîy is low

enough to ba outside tha poatul-itwd i^siadibllity fiald (Dos p*3)o

Vhe E t b3-t\'Uiij5," in t-ho arsb&iy I s vary i:oo? a*:l is di^tin-stly

i'rc-;s tho iiiin-'-iiAYii-uya Oi-sa of "-v^ddn* Th'1* 3'iirun*vVAars

ap-atit-i* oraa ar-a v.-all bandwflj, highly aupj.;oativ* of invaiaoibility, but

ths ij.ll.ica content is high^ro Th-9 "bands" in tho Mtilti-Mnerala Kuwibaj

6 or-sbody 01*^ rept^&^ntftd by .1 fow fluorapjitito-ficb lenses awi scat*

ill—3î"ijnsd liRo&tioRs* 7ha Host convincing arguaisnt e..^sin3t. iareoiaciW

origin for the Hu&bar 6 oraVcdy is found in tho fiold ralationships.

jratura of an iw-isciblo licuid rsolt i?* er/u^l to or ab ova tha

(3 tâporAtura oi'Asio3t rofrastory phase , this .ja.

ox'-v'yura nay bs lov^r&d by the aiidlticjfk of othar cciapononts *

GO?.ponyrsta would h&w to bo aainly gasaoua as tha orebody contiiina only

8 fl solid i,-h"is*e impyrliiaa (Tabla II-B) 6 Hodder 1 9 sjodas for th* Jûlti—

jSinerala naphalift* syenites (196lp p*2^), whan plottad on liJ^nilton's

phaa^t diagrsa for the system }*8-Kp*SiO,, Rt ICCO atsiospheroa*^*

(1961, p.32o) p fall approximately on th® 1P 000OC liquidus

Tho tosjparaturo of the irrîocibl^ wait vould hav9 to bs balov thio

t*2!?.f.dX'Ature or tiloa ft prograde contact horafols would form. No horofola

ia fcuyid at thy contact. Cn t-ha contraryp :iotBMorphli*3! âs "r*ti*o-6,'jr^.da"* Thiap t,hwn ? jMîirfts ft- to.'spsr&tvird fl-^prâsion of aboxit 600 L*

Tor tV:i) o:--i rvrt*, udi;;.:. tV.a ••sal*la,,: tOMC^ratur^t o:T sv&sn-atiL^ at 1,000 . M^ ...,,^ /^ , ;-,- r o,, (i ^ v, 4 . ii , -4 , ,,,,-s^.^, -,,,,.

153

3uch e.

•;vopr-3-?:oion vJuia to ^ .-;-).-.-:sa iinlikctiy. A ccrapLstlsy miscible

vroulct ..-.lay ha.vs* to ba tCTpJUcad b^low 1,000 C* Tha nagativa

results* of Sari'33 'K (900 C and 1,000 atmosphere** preasusra) suggests

t auch a low tonpar&tura nalt cannot fors*

(1961, po54) sn^gssta th.tt the oi^obody fot7!^d "f roan

solutions rich in iron, lias, and components or tho accessory

aoae CCL*" Hoissr sjid Schndar (1961) in thair voric on hyf* *

to ahow that the solubility of jflagnatlto in nautral or alkaline

B01ution3 is vary lew t. Kowavar. in acid Bolutlcns th* oolublllty is

guologloally significant* Upon r.eutraliaation of th!* solution isagnatit*

is procipitstocU Tha fact that ma&netito lo eosantially iiisolxibla in

cliatillwl water waa" r'hown in 03 rio 3 K (p*Al)o If a •hydrbtharr.si origin

ia adharmi to th.i nature of th-s solution mist bo dotsnMjnsjd. Thd fluorine

content of tha apatite siv.goats that such a solution vould ba acidified

by hydrofluoric eoid* Such a ncluV.ion vould bo very rea.civa. The sharp

contacts of tho orebody desicnstrftte that no reaction occurred other than

the metagom&tio alteration of nepheline in A narrov (ono foot) sor.o* Aloo,

K. msohanism for neutralising thti solution is lacking* Koleer and Schn^ar

appeal to carbonate sac'iwsnta but carbonate rocks do not occur associated

with Busbar 6 orebody. Thsy also surest e. pressure drop sdght be

but this has not besrn provan*

/•h-m-'i (19V/) as;*;o^d tJ'.at ma^nahito -™U9 carried ,*.;i -H ferrous hyclr-

brltv, fi ihi:j ."ViJ

h; 5-000 *,t 1,000 ÛiO-'ii:h*r".J2

of transport into thfl ra-*!".'1, of

.T J? it c an b.4 ifhovn th&t raa.:.r.3txlo iss cariiod ai'i'ectivaly in hydro~

thtjriial solution:* \.'hich yr^ not acidio thora still roaain? tha problora

of tranaportim; tho ^-aorapatito in significant quantitioa* ?o y;y

knowl^ds;* fchio h*a not. bi sm sufAioi'3nfcly investigated although un~

doubtably SOK*? Koehiinl&m could 09

i'rorri the p^ti'olo'îcal end oxparLnental invostlgation AS outlined

ir. this thesis I hava conaluriaU that tha iiiwb^r 6 or*sboUy \*a

in u cc;v* ii/sjat- .Criictury .is a "iv.uari" oi1 aolid âagn^tito and f

ftpatit.-! particlsa which fia-:i cyyotalliaad ut. dopth and v^ra aubsaqusntl^r

carriod u-;warxi in a /iuiU nKt;Ux;3* Tha nocUisua coitsiatoU m&inly o* water

vapour vvlth BG;-.y C00 ami ;-dnor li;a-9. This wsohaniaia provicSas a low

toapa rat ura oapiicom^nt aa indie nôd by thii aooliîc alto rat ion of

ti-^phyXlna. Tho v/Atar contont oC '-iu* ora ;;sidiua Jaoilit&taU th* al

ation o? tha anlvydrous mph^line to hydrous a&olites and

Tha C00 arui li:v* contrib\itsd to th0 cancrinite. *;atar vapour

to pftnatmte tha inporraaablo wal3. rock only slightly, in

ono\ii;;h quaj"itlti*ji3, r-saultin^ in a narrow zone of zôlitos* Thia

of tsttplaeozvent elso wxplains tha sharp v?^ll rock contact. Vh* ^

i'iuor-ip'Atitn {ci-{iir.? rtJ3B!.ible ory?t^la vrhich hiva b^^n brokan

sol3.d~v:'i-j trfinacort, (rlato V, X3..iwrfl 1)* 1'ha or^boJy vft

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; 3 \V'cU vaa.3 for i'urthui4 r^s-sarHh* i 'ore therôdynAîc ciata ars n

.Cot- fluorE.jyi.titv o i 'oro hi^h tojar.sraturo and hi:-,h prvsouro dst.a aro

i 4 ,-.-iJ..id .i' c:* ilia r.^^rK'tit-'j-ricorftîllto i'.,y:-;t.,o;,-. to fix tha cutactlcu l 'ore

vork should btf dona on t)v t-jjfi'acfc of .dlica in parti

'j'h^ nuiura of a reigns tits - fl

if ivach sxiotiSj, should bs inv^stigat';,--!* T?ds eoul-.! bo conduat-a.'* ix\ K

cîjn-riyat^^ bow'c3 usiins various liquid and gas cofi*eina,tion3 aa th* hydro-

bshy/Aoiir o? ma^natite e^nd fluorapatito solids urrfer high

b-3 ox&în^d to datemirw tha feasibility of plastic flow*

'..'ith rog;u-da to f!xO,t.i~iiiu3rral3 ;'uabar 6 o rabcd^, i-t should. ,, , . . - . . ' . ' . - ' . . - - ' -, "- ' -, - . ' .- ' '.'" ' : '' '","' :; .; -'-' ;. ^ ••••••--••i ---

in d :-'t.:U,1, i^*yin;; partio ilar ait-ant ion to tha -.structure* in tho vralX ro-sV;

'MI'! t' jo or')brA1y., A d;?tailod syatoâtic uri'i statintical iiioiniuation o.f the

or--jbod;f nrci vail rock nay ixncovm" furthoi* cluyo ^^ to th'3 p-:?troij

Orientation -jJid roc^/nâlliadtlcn of vartou* '.liiiaral grains ait wall

ro:-wa;it. r.i*.ynatisM Svtidios may bring to li^ht r.'ov ^videnco for or

t.h-j a olid ntata inaction thaor:^. .. cwsparison bat.ân Kumber 6 orebody

;j4id othov MatynotittJ-fluor&patitd dap-oaita botli in th® neiayôa alkaline

co-'ipl*5:? -.rvi in othwr part 3 of tho vorld should b® taaio to e^s if thd

ch.j.'t'-c.ct-jrfi.3ticij of isolid ntata in .'nation sro tinivaraal* ?-uch a study

;v;y hav?* a f-rofour.d of foot, on th^ thforio:* of origin of thn

;:~. "''I • ;:X'? Si r. '.T* i/-, '^-.''"Jr.

57

P;i,*thj, "l^-M* t dv^)s '.:}:ooT"Jt,loal p* trolly (ascend edition): Joh V-Aloy -und ! -1313 p s -is w York* '

fei-idii'sgton^ A.?'*, Pahey, Joseph, ar.d Vlioidia, An^sliâ, ( TlwracflFatriG and pyiro^nic ai^lflc^nc* ci" .Aau Jour* Sol. j, v. 233, p.f*97 - 532.

Bowsnj M*L* S (195-S5;, Thft evolution of th*j i^r.ftcua rocks: D JLieatlcni* Inc., Kov york* (Rcpnnt of I ^ZQ book).

Darken, l-* '5* wxi Gurry, E*'c'*, (1946), The system ircn-o^gsn. S'jullibrlua iind thorraodTnajftioa of liquid oxicios w\d other Jour* M. Chî. fox;., v* *k?, p. 793 - #16 0

Kuât®?, HoPo, (1957), Ksierogsneovia rokctiona involving ccclciatlon ftnd vechsetien at high prsiesurss fend towperaturea : Côj^yoioal laboratory j Carnegie .Inatitutlojj of V'ashirisfcon, I'Apar no. 1-28

?i3ch-a;r9 Rainhard, (19^0), Entaviachungen in Scbnslasn iiua Schwajv s^tallox5t3*n? Silikatan, und rhosphwtynj Ihfa goochesdocha un la^Qi-stytt^nkuiKllicha Becioutia-X;:; J Neuos oahrfcuch ftir ;:'Jjn**-alog A. Bd* 81, p 03l5-364*

Fisher, r. J*., (1958), Pogswfcito phosphates and thair probloma* As*. }-a.wsr., v. 43, Po!81 - 207o

Garvio, H* L., (1959)* Hoport o^ tha Dsssagos property. (Unpubliohad report of .*sUti"în*ral9 Ltd.)*

Kawilton, D.L., (19nl)? N^pholin* as oryatallisationindicators: Jour. Geol., v* 69, p. 321 - 329.

Hoddarp K.W., (1961), Alkaline recks and niobiwa i^t-ario; Gftol. Sunr* Canada, Bull. 70.

Kolgate, Jfoman, (195-1* ), i'ho rolo. of liquid l-,smis3ibillty inJûr. C-.',cl B , v* 62, j.-. 6 ^3? - .'."0,

p^KaMCTttHagaga^^

arson, 2ai*l, (1955), l^thoda wrsd problyeijj of gaoloîc tharwxsatry: Keen- Cô."1,*, 50th* Ann. vol., rU l, p*3U. ~ /JLO.

f.ackw,, i.'.., (ly.12), Uabsr cU*t Dlldiuv?. c! 93 Apatites I: C'.ir.tr-alblatt fUr i-iiiieraloîa, iôloîa und i-^lidfjiologiy.

.National Hewdarch Council, (19^9)^ Iâta en ehwiiic&la i'or csrâiic Kat* Ac ad. fie i., V^hirsijtcn D*C*, Bull. US*

hioksl, A.M., (1955)* liaporfc or tho rainoral draasin^ ond processRfjUillui'^y diviaicnj Interim Jl.O* test raport no. 716 - *ML:

' în*B Branch, Dapt, Kinsig and Toch* ûj-v,,, Canada*

Kortham J^lnsjr, (1963), Taking n&w approach to folti-Kir^ralo t no. 43, Jan* 17, p.5*

Saiia, tr&aanjit, (1961), Tha syatâ HaAlSlO, (na^halia^) - KuAlSi 0^ (albit*) - H0* Am. Miner., v. i;6, p.359 - B^4.

Shsnd, t). J,, (1947), Tho ^jjdsis of intruslva swa&iHtito ancl ro orus: Eoon. tk)ol., v. ^2,, p.63/* - 637*

tuttle O O F#, (19^*9) j "Two prossxira vsasala for alllcnt* ~ -water etudlâ: Ooola 5voo B Morlca Hull., v. 60, p.1727 ~ 1729*

F-.T,, (195^), Ohfl.Tilcal thfjrracdynaaica San FrancisQo.

J*:U Van, (195*)* Phosphorus ond liaPubltahars, Ins*, J'0v York.

and Co.,

j Vol I,

J'lvSj

f^7T^w5c?^;#;r;r??;w^r^^JOKWsi*AyA5-;As*^^^^^M ' jM. ^a Knut Heier t^

MINSRALOGTCAL EXfei'lIKATION

of ore samples froia

MUI.TI M®*lj Oslo, Novemter 25th, 1954.^/^fcs^'iSimm?^^ 1 - - •••••- - --- •••-•'iAU:--;' ," .s'i-;i.',-5"iSv.-"-.'j*

i^affi*,-:*;.;.:,,,-. 1 .,v,v;^;;,.,,v v, v ,.^..,.., ..,;:-,,,.; :;:^ i . ,v ; r .

JAN H. REIMERSMETALLURGICAL ENGINEER

ROOM 3O2, 7 7 YORK STREETTORONTO, UNTARID

CANADA

7th Jeimary, 1955.

•Ir, E. F. Carr,, Managing Director, Hulti Minerals Lim Boon 1106,25 Adelaide Street Vest, Toronto 1.

Dear Mr. Carr,

Please find enclosed a report dated Hov enter 25th, 1954, describing the results of the nineralojrical elimination of the Hulti Minerals oro samples A -'r i i eh has been carried out by Mr. Knut Heier in Oslo, Horway*

Jlr. Aanen B. Boe, v;ho is co-orclinating the investigations in Korway, vritevS to ne th?.t the ainsralogicri report is adequate ao a Tjasis for tho fvorbher investigations, bat Ur. Boe is of course not .prepared to express any opinion on ths possibilities for concontratipn of the ores before actual ore-dressing tests have been carried out. - * " "- -":

The polished specimens have been s&at to Tiondhe-im 50 as to be available there during th^ cominr; ore-dressing tests.

Professor Kortenson at the Royal Institute of Technology in Trondhein has studied Kr* H9i3rf s report bub he vill not naks any definite statements befors he has had ths opj.ojrbuni'ty of carrying out soat? exploratory ore- drossing tests vdth the larger caaples \îich you shipped to Korway shortly before Christmas. He is of the opinion, however, that the task is a difficult ons an:.; ^hat.toe^^êralogical saagle^vhi^da jêj.ns^^| IJorway No. 6" ?nich conaiets of liighly carbonated gangue.

One of the* reasons vdiy Piô^sa^r^rlorj^nsonj^d^^r.^^R^s^g^ vith respect to Sample" Ho. "S"ii3 t*at it appsas's very sillar tc^KvBôr&^vr 'jr "'" r' ~ ''ic! at "So'Vor" Ifi r'ljhls ~ connection i't'Tif pit be of interest

to point~ourt~t;T^~tho"~Sov'ir"3e5bsit also cont.-.j.ns lar^;e sones of colu^-.bixia ores

a ::.ithod of coi:cintrr.t.ln;; thy silicate rich ores with a satis factory recovery,but t !:i y are vorkin^ on thir- ;.!rob]..:-:i in !*o^^y no:?.

Mr. Bos van't: 1 t3 drwv yoxsr attention to i.is -joint olreaiuy c.t t'tis sta b:c:.;;3. Ilnlti i-Ii^rals Lu::iitad'^ :jroble^ vo\il:: rp;;ea;: pi:^)ler if you could

^olato n ;;ui'.fic:U;atly Ir.r23 201x2 of cw"o5nat3 rich oro v;;Ich cculrj bs :lv:-;a -ax:! concentrated until ?. fcatisfactory !..iotl'.od for th.; other sonss had :;5en dGV^lo;i3d, in ta-3 ;-'o;:o vay K H "t'li-; liurv^jiiui ruixiu,; co^^tuiy hus clon:;

. t K o vs.

Mort-:-:nson vlll c;tDrt t;;o o^rr-^rcosir^' t:.sts in Tronclieiin 10th and I shall keep you informed of tb;j progress h^ liakos*oxrt

I vould apuroiciats) it if yo-i - :x)uld lot ns have your coioaent.3 oil co:;ot:iiG 'possibility of sylectivolj j.!inin^ ci!.rbormtG rickx ovo of tliji type :\3::tpliiiad foy Sr-waple !lo. 6, in case it should not ;.;.rtjve possible to obtainatiyfcctcry recoveries v3.th tie otier typaa or ora.

Yc'vTs very tridy,

Jii;i H. Roiiaers.

JHP/hp

c/o

li^-LilsllLJ&LJlLjLi^^

ri'hrough Mr. 3oe ? ::iinlng engineer- at Xnaben Gruvor, Mor '/ay, I was asked to ujadortalio a mineralogical examination of a Canadian coluabim ore. '

la the beginning of ICoveiabs? 19?^- I receivact the sauples sent to LIB by e.ir from the iirza i-lulti-Minerals Ltd., Toronto, The- samples i.rere in rive bags and consisted oS parts of diamond drill cores. Tlisy uare labelled rlorvay no s. 2, Lr, ? ? 6 ? and T/ .

cM-J^^This was to he primarily tiio identification of

jaiuorals present, especially the coliKibian bearing onas. jDeterivdziations were also to bo made of the. grain sizes oif ore minorals, specific gravity, chemical coinposition, hardness and Kiinoral structures.

The samples were crushed and ground. The fractions : with grain size between. 30 ancl l6o neah (0.20*f - 0.1Q2 rim) were further separated in liquids with specific gravity 3 and h-, She fractions thus obtained were, ijf regarded.necessary,, farther separated with a Fronts isodynamic ^agnet^ separator*

The final fractions vrore examined and the minerals identified optical or by x-ray polder diagrams*

One thin section v;aa nr.de froia a piece of oach of

;i^iZ?J-^.l-^LJ)JL-''^9-~'^^^^

:j:he i;i:i.nui'.:',l,'j occurring in the uii'i'urent s.^jiplcs are hore:; oriofly il-jjcribo-I. 'i'/.io p or:: out o d as estiiriatod fro::: tha

t /ills. 3 rations are [-ive,. in tablo l* Physio?.! data of t'.io ;.ancjr,.-,lj are ,.;ivon in table 2. vf*"

I). '0. li, ii'o e H ~ li-6. One piece coro i'ro,u footage 5^ ~ 5^2*:-.czz? 12 ^ CbyV-

2)iisj is a piooo of a M^i gra^e core which x;as 3 1 'd t o J to contain approximately 12 ; i Cb00-, As this piece was included for mineral studies only5 it vas the first one to h** exaininod.

After the grinding this.saaplo w^s not separated, in liquids but put directly on tile Liagnet separator. The non- ua^rietlo faction thus obtained was thereafter separated in Clerici solution (sp. -^ ^)-Colu:aa l, tablo l gives approxi- nately the mineral percentage as observed in tliin section*.

^!.^;vA.vA^l-.^.^-.J'sl?i,eTj!*^ls^,.v\3^

As uill be seen froia table l the saniplo is rather rich in pyrochJ.ore, The ^rain.. size varies between:,, 0.02 - 0.8 jura, i'ho 'ayorase grainsi-se^ is^ aromia 0^ 3T ~ O* l :. The Liinoral occurs partly as individual grains azid partly as inter growths and inclusions in biotite and especially in magnetite. Magnetite can also occur as inclusions in pyro chlore. The grinding was not fine enough to i^ree all the pyrochlore frora magnetite, end it occurs in all the fractions frora the most magnetic ones (as inter growths with magnetite) down to the non-magnetic (the part with sp. g* > ^). !Che

^'-n '3-ac*:: to deep- red and light yellOv/. Octa hedral crystals can be seen within all the different colourv.-.xrieties. X-ray poi/der diagrcms vere tiado of the three aiiTorent typos. UniicHtocl they either gave no reflections at all j or just a few ve.Ux lines, ^his is typical for theUIJLUI netoKiict pyroi'.].oio :aiaer-alo. IJiiGn hentcdj hoi/everj t:;.;, ;.ll ;.?.vo o;://;':!/ ''.1..^ ja:-.i3 /A.ti'.fc^rii,. uhich corresonded to

r;v colours

-1--- t/ .i a t-ila .scotio.viy it can^ pnoily 'bo :a^ i, i :.:aji'.ouito are More reaiSii t.'i.tin tho

Ci::'i,^^;:^_Jin_t;io_;u): !.o^^^_y/^rivifcio35_Jl;:^^ro;i.^ theJLiît^;ollC)U

''iO'.j'o *' ; O'-X-^'Ui^-t vcsr'oty*2.. iîiîitJii^L, occurs i.-.i :lrr-eûl:,r grains, usually as iiitor- îOîj-s witti py.vochlor.3, Kie grainsize vîriQj as for pyro- chl^rs. i.x.:;\il ^ r a iris CO* OH- - 0*01 m) occur as inclusions in tho latter,3- ,-iiiiiilSi. 'i'hs colo'-ir is darli bi-ovm and. it contains in clusions of liagnetite, pyrochloro and zircon, The grain sisa var-ios very isuch, but It can be larger tiân one oin. ^* C.i.i.SJxiiS occurs as individual grains, but visually in nection with pyrochlore-.5* FeldjBiASir uainly potash feldspar, but also aiaor s?. of plagioclase. Potash feldspar constitutes the ground mass of the section, . ; 6* Jil?jcom the grain si so of which vai'ies from l mn down to iiinor haloes in biotite. Apatite and sericite occurs in ninor amounts. I'he rock aay be classifi&cl as a i'irc'on,-Syonlts.

Description given by Kulti-Minerals D.D.H, ilo. 11-39* Foootago 100-10?* Assay 0*2^ /^ I?"ine, dlsseuiinatsdj lion e;/- y alio w to resin- brown pyrochlore throughout* Typical of no. 3 Anomaly apatite-magnetite deposit.

The sane grinding was used as for no. 7* A3 very little of this sample had specific gravity lower than, three. It was only separated in Clorici solution (sp. g* 'f). The tvo fractions obtained wsro afterwards treated with the mag- - netic separator, 'i'he fraction with sp^ g* higher than *f cousioteu mainly of iu::îi:.otito 5 pyrochlore and sir con, H'he one with loi/er- :ip. ^. contained apatito, pyroxene? biotite and - anrloito. In addition :U;;notito occui'cd as intergrouths i?ith a ; iiv:it.x-i cuu am-lcito, Cl'or a;oproxiLi?.tc'ly mineral ciistri-

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The J*;vera: ;3 seeas to be coimd O . l ~ O* .Tory few j^r-iins seaia to be less than 0.1 uau Some of the ;-r?..ins occur as inter growth 3 and ivzclusions in magnetite. j?he

,1^-3-ib. ho-.vr/ar, 5.3 disseminated in tli3 ground nass which consist ox' rather coarse grain-3d potash feldspar. The grains in laag- nstite are clearly mor3 reddish than the rest. 2* .Iron^qra.. i'he grain sise varies between 1/100 ma to sorae - lin. j jbhe average b a ing 0.2 ria * "hay usually have irregular boundaries and occur often as inclusions in pyroxene. 3* Pyroxene (aegirite-augite) The grain size varies v;ithia the sane range as the iron ore,}** Biqtlte ? grain siae as for iron ore and pyroxene. ?* Potash, f eld s;og.r, iV Average grain siso ea* l mnu This is the most abundant mineral in the sauple. ' 6* ,Q.slfiitS~ Elinor aiacunts. . . . . . . .7. ^.ircon ~ the grains may be around l nm. - ninor amounts.

t a few grains. . ,'i'he priirtary rock must here be classiried as a zircon-

syenite. The rock is very similar to Sample 1-Iorviay no, 7 j except for the laiich higher pyrochlore content in the latter*

no . 6

Description given by Multi-Minerals ItdV: D*D*H^ -* Ho. R-73. Footage 67-72. Assay 0.3^ f' CbpOf-. Disseminated :

^ **

honey-yellow pyrochlore in highly carbonated Rock Type no, 9* Much reddish alteration, and other rare earth oxides suspected. 'i'ypical of i lo. 9 Anomaly or carbonate deposits.'i'he minerals: ' - : - -l* ,PyrpohT]qr,9I.. The grain siae varies between 1/100 raia and soiasaa. The average being aroiuid 0*1 raa. , It seems for the mostpart to occur in calcite 0s--* ,IiîJ2iw3* --'l - ;:i'ain sirô varies betT/aen 0,1 ai-d 0.^ :i:n.3' .•'.w.'.'.-iiw.t.-^. i^'-'rin iiize bot;vriva C-.ll and 0.2 :^:u^ -lîi^^. .^lialta* ^'— ciruiii^ -M'o -ucjual^v .bi^jor than l 12^1*Cc -.le it o i .r. ii^re by i^r ta :J -:;o^h abundant lai.aoral in the rock,vliicii i:ia./ ba 'j.'!.:;33iiled a .o a IJuaestone. i; lio other aineralsoo-'jur dirjGeiain-L'.tccl In the c:.lîtia :;.vouacl âss. Any otlior

"

section nor in the sapoi'ahed fractions. I? they do :ra occur .vljuy Liust be in very n;

X ;13 K•J-F

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1) Feldspar is here tal;en as representing the whole ground mass, at not observed in the thin section but is present in rather

large amounts' in the separatee! fractions.

She rrunbers given are only estimated from the e,ppearance of the one thin section u^de of each sample. . "hey are only meant as an approximate relative distribution.of the minerals and no real significance must be attributed thesi. -This so nore. - : as the piece taken out for thin section need not by any means bo representative of the core where it .belongs* (Sample no. 2 is probably on the average higher in pyrochlore than appears from the , thin section made. -On the other hand it is also probably higher in magnetite and lower in apatite). . t

. Table g.. . . -' . '.,: - :. - Physical data of the minerals present. Partly taken, froia textbooks*.

XX system Sp.g. H, Colour. - Feldspar monocl-trie!. 2.5-2*9 6-6.5 white - reddishPyroxene inonocl. Jiotito nonocl.

cubic?

3*2-3.? " { l dorlc green brownro-Idish2.2-2.3 b-b O

2.7 3 i^ita-^roy-red3.2 5 lA-:.it3'•;-*7 V * 'J •',.; 'iit3-rr:ddi3.in-3rea',ii3h

5-5*5 black-r odyhoiiay-y allow

ea n i

fic gravity of pyrochlore varies betyse.1' H- 5 2 * v/ith tho ?a content hydration. or oth^ring

nduces a uarkod docreaas in. specific .gravity.* thei^'ore carried out on theof te so

'i' h i s f zircon to the probab result

tioCa

fraction uith sp. g* > -:- f rosa Saiapla Horway 7* n was not' completely pur a', containing sorus percent ;s. W/), laie* pyicnouoter nethod was used, Owingar.iount ci' mtorial available the result is

too little matarial is us 3correc. Ivhonobtained is usv.-dly too lo-;.

tha

Special care was taken to identity other nlnerala in the saupied. ;iona, however, v/as discoyerod , x/nicbi indicates that if they tire present at all it must be in ne^- liîble aaounts. ColiUubito was especially to be suspected* - h'ith its rather high sp* g. C ?*2( columbite) -13*0 ( tantalite)) it should be concentrated to a high dogrea in tha heaver frac- ; tions (sp. g. higiier than Clerici) fc l 'vas, .however," not able to detect it anywhere. - ' ' :. . ', : . . . :..;.:...c,, : i

The tern pyrochlore is generally used for..: any •asrabsr in the completely isomorphous series fron tha pure ' 6b-*raeraber (pyrochlora) to the pare Ta-member (microlite) ; I iiad no raeana of getting any che-uieal ahal^'SQs of th^ pyrochlors mineral c The powder-diagram obtained. indicates, . however, ara.ther high^ content of Ob in eolation -to îa, -and so does the

sp* gravity. ' (Although this is probably somewhat too low, l have no reason for believing it to be hlgher^thaa'^.V or about the same as zircon), /according to Dana* s systeia of r" mineralogy "the Cb content of pyrochlore 'v/i thin' this' region 1 of " sp* g* varies frora 73.05 to 3^.2^ and:tho Ta~ -content f roa . O ~ 29.83 ;i. According to the information I have, hov/ever, aaalyses wade on the iiia,^netite rich ore (llo^- 6vorebody) and apatite rich ore (Ho. 3 orebody) containing respectively ' : : ~ ' O o 172 and 0*2^ ,j CbgOr { did not give any content of Ta at all* This indicates the ore mincro.! to belong to the rather pure pyrochlore and-noabor, -."id the sp3cific gravity (li-, 2V) to be

:I,: the ixiv-;':li:u obt-ii.icsa by separation in liquids,

iA.L.ioi'als vharo Jlsli.'ibutr*;. :,j ir.yj.1-~l b a e::p3ct2d :?von thair ^* Îv1 ;;:: in ts.blo 2* la the light fraction (sp* o* leris

i 3 5 ; rolo.s;K-.r 7 calcl'co ai-cl. analcite wore concentrated. iii'u-:.'j;'iitoc!ia'i",ci .':'r:,.ci;io:.i ':,lth n;;. g* b c- 1 r 7-^0:1 3 and' '-r contained .ly p/a-oxovis a;:-! ap.-iiito. biotite 17HU distributed both' in

'''••^ li..;."--; cU:i ia'Loruauliito fraction.*) Iho bulk j hov^ve^j in •':;-.cj Ijr'/ror,. 'j; i i o hOLV/y fraction (;jp. ^* hi^hur than V) v;as ...uricl: au in magnetite ? pyrite* zircon and pyrochlore. Ilinor .-..'/.ouht';; or rjyrochlore u:?.-^ also prônt in th-j intermediate r.vc.ct;lovi.. Jailor r.:.:o JLit 3 of r 1 1 the r.iineralG can of course ",-j 30311 in all the frÛonc, p:,r^l/ as intcrgrowths ;rith j.j.iieralij of different su, 3* an-:I pi-:?tly duo to cohasion to ;r.,ch dLLi-inji the separation* Thus potas'i Tsldspar is round as individual grains in tae fraction with sp. g* higher than ^ cuiu i.ia^riatite is found in both tlio lox/sr fractions, usually aj i.'iter^rowths v/ith t '.i e minerals riÎitly belonging th^re. Burins; tlia liaonatlc se-mraticn of the heavy fraction tho pure jîa^natito was ;just ttC.:3n out with a iaa;jiiet t l/ith clLi'.isnetisn the intergro-fths of n::\gnetit9 lth other minorals. ..,-i;o:ce fir;3t CDncsntrat^'i^ the npn-.ua^netic p?.irt being completely j?ree of magnetite. Pyrochlore s e can s to be distributed over arather large aniaQ^^^notis the colo'ar varying batvesnlac.1 red and yllotf^ 3.attgr b-.a:uig concentrated in the

non-ua^netic fractions- i'he reasons for this nay bat:\tio.ijDf Jirqnj or^nicroi'oo;oi^ JrncjL^sion.3-^îa^netito in the co lour gil vp.riotias* Sir con is conceirrit 3d in tha convlonoa-.Aa5rj.etic frt-Ctiony :-.;:d pyrite is distributed between tho

. --... ™^-. H **K/ i f i* 6 -2.tr*o*i r's/* /** v rH.-~v*Mft?t-tL fr**tf-*"*.ft-t~~' c *S*rt. t J ' *0****44A rn*?H-r 4S

Proa thd' information I have I understand thaordinary table washing will be tried for concentrating the ore* I'he problem which have to be doalt with x/i.11 then be to libe rate tho pyrochlore fror. their inter growths with other minerals, which is usuallv raa^ntite* As will havo boon noted from thedescription of the different sar.nles the average grain sizeis o.rouad J) l \?m for tho pyro ghloy o^ riinar al s ? and tho s i a e rr-r-ily isôlojÔjiOT^^s* Dy crushing dov;n to a particle size of 0,1 i.ui the buliC of ta2 pyrochlore should be liberated * 3y do.ii^ so another difficulty j hoi/eyor, vi 11 probably be net -,/ith. In co:ibrast to t:, o otho.'? i.dnorslaj .û^notite, pyrite

the'J';;, b,l-.;'icr L;vai:i3 of ^yrochloô,,r:. :'.;r/ c f t on botvoen Q, 3 cc:^.

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1.

Report

Two Day Visit Multi-Minerals

Nemegos, Ontario

and

The Columbium Metallurgical

Problem from a Geological

Point of View

O* E, Owens

North Bay, Ontario August 15, 1956

2.

INTRODUCTION

On August 13 and 14, 1956 a visit was paid to the Multi-

Minerals property in Lackner and McNaught townships, Ontario, to determine

the geological setting of their deposits and the similarities to the

Beaucage Mines Limited deposit at North Bay, Ontario

LOCATION

The Multi-Minerals property consists of a large block of

claims astride the McNaught Lackner township boundary. There are eight

anomalous areas about a mile south west, and west, of Lackner Lake which

have been investigated.

ACCESS

The property is reached by a serviceable road, six miles in

length, from Nemegos, Ontario.

TYPE OF WORK CARRIED OUT

A ground magnetometer survey was made of claims. This uncovered

eight anomalies which have since been investigated by diamond drilling*

The diamond drill sections are commonly 200' apart. Extensive stripping,

and test pitting has been carried out on No* 6 Anomaly which is rich in

magnetite and apatite* A 50 ton metallurgical sample was removed from No.

6 Anomaly. NX core drilling has been recently completed on No. B Anomaly

for columbium test work at the Department of Mines and Technical Surveys,

Ottawa. The property has been mapped geologically on a scale of 200' s l" .

The company is currently diamond drilling the carbonate zone on which they

pin most of their columbium hopes.

REGIONAL GEOLOGY

The rocks in the region are mainly biotite rich, medium

grained, granitic gneisses. They are irregularly folded and intruded

by pegmatite dykes. A sedimentary-volcanic series, reported to be of

Kewatin age, lies about 15 miles east of the Multi Minerals property.

LOCAL GEOLOGY

The Multi Mineral property blankets an elliptical area of

alkaline rock* These are described by R. B* Row, in a forthcoming paper on

columbium occurances in Canada, as being syenite, nephaline syenite, ijolite,

and malignite. Mapping, now in progress, by R. Hodder, Geological Survey

of Canada, shows that the elliptical area is composed of concentric bands

of the forementioned rock types, The Multi Mineral ore deposits lie in

the western part of the ijolite-malignite band between an outer circle

of syenite and an inner core of syenite.

NEPHELINE SYENITE

The nepheline syenite is medium-coarsed grained, light pink

grey, leucocratic rock composed essentially of laths and grains of

plagioclase, with lesser amounts of nephaline, soda pyroxene biotite,

calcite and magnetite.

IJOLITE

The ijolite is a fine to medium grained, greenish grey rock

of variable texture composed of about 50# soda pyroxene, nephaline, and

small amounts of magnetite, apatite, biotite, pyrrhotite, ilmenite, and

pyrochlore*

The pyrochlore occurs as disseminated yellow to yellowish

brown grains up to .5 mm diameter. In thin section it is redish brown to

opaque *

MALIGNITE

The malignite is medium grey in colour, fine to medium grained,

inequigranular with light coloured lenticles. It is composed of soda pyroxene,

nepheline, potash and plagioclase feldspar^ magnetite, apatite, biotite?

ilmenite (seperate grains and as intergrowths with magnetite) pyrrhotite,

pyrite, zircon, and pyrochlore.

MAGNETITE APATITE ROCK

The Magnetite Apatite Rock consists of 69# Magnetite and

22# Apatite. These minerals occur in bands, patches and lenticles with

minor amounts of pyroxene and pyrochlore. The pyrochlore grains are redish

brown and up to .25 mm in diameter.

CALCITE ROCK

The Calcite Rock consists almost entirely of calcite, with

disseminated grains of soda pyroxene, apatite, magnetite, biotite, pyrrhotite,

and redish brown pyrochlore. The pyrochlore is mainJy associated with apatite

and is in the greatest amounts in concentrations of apatite and soda pyroxene.

ECONOMIC GEOLOGY

There are three masses of ore of some size on the Multi^Minerals

property. They are of different mineralogical composition, though containing

a similar grade of CbgOy

NO. 3 ANOMALY

No. 3 Anomaly is a magnetometer anomaly which has been

diamond drilled. It contains 12,000,000 tons grading 15.5# magnetite,

19.5# apatite, and .23 CbgO^. x

x Assays by X-ray Assay Laboratories,

NO, 6 ANOMALY

No. 6 Anomaly is the discovery showing (1909 for magnetite,

1949 for UoOg) and gives the strongest magnetometer anomaly. It has been

closely diamond drilled, which work indicates 5*000,000 tons of rock

grading 69.5# magnetite, 21.9# apatite and ,17# CbgOc. Diamond drilling

shows that this deposit is cut off at 600 !

NO. 7-8 ANOMALY

The No. 7-8 magnetometer anomaly zone contains 50,000,000

tons of rock grading .26^ CbgOc. It consists of malignite and ijolite

type rock for the most part; however, within this zone is an area about

400' x60' of calcite rock grading .25 - .35^ CbgO^. This calcite rock is

considered by management to be the most interesting columbium bearing rock

on the property. It is unfortunately of small extent.

METTALURCT

There are three types of ore presently known on the Multi-

Mineral property; the high magnetite ore of No. 6 Anomaly j the syenite

ore of the major part of No. 7-8 Anomaliesj and the high calcite ore

of No. 7-8 Anomaly. The metallurgical details of each, as known, are

discussed below.

The Department of Mines and Technical Surveys, Mines Branch,

Ottawa reports as a result of test work on a 50 ton bulk sample from No. 6

Anomaly that 95# of the magnetite, may be seperated, at a 24 mesh grind,

from the apatite and silicate minerals; giving a magnetite fraction with

,45#P (.08^ P at - 24 mesh). The apatite fraction is saleable (American

Cyanimid). Unfortunately the magnetite contains too much titanium to find

a market at present.

Larssen Welle-Strand, consulting engineers , through

Mr, Reimers of Kiikland Lake, report that a process similar to that

used at the Sove Mining Company, Norway, will recorer 60jC of the

CbgOc in a Mpre-concentrateN assaying 6*1 Cb205 from the high calcite

type ore. The Sore process consists of grinding (aesh ? but apparently

a relatively coarse grind), and tabling. Tabling seperates and apatite-

pyrochlore concentrate (ty CbgOc). (The pyrochlore is associated with

the apatite and much of it is actually locked with apatite). The apatite

pyrochlore product is shipped to Novak Rydro Chemical Company for phos

phorus removal. The reject from this process (pyrochlore and some iron

silicates) is shipped to the United States as a concentrate assaying in

excess of 50# Cb.Cv.

The Mines Branch, Ottawa are presently working on a bulk

sample of NX core from the calcite zone to verify the above results.

It is significant that only a very small tonnage of calcite

type of ore is known on the Multi-jiineral property at present.

The columbium metallurgy of the low grade (.1? - *27# CbgO^

ijolite - malignite type of ore has not been investigated. The Multi

Mineral management feels that this type of ore has all the probleas of

higher grade, silicate-type, of ore at other properties, and therefore

would not be economic.

i-s A

Ippft' -i 1 ;; :t: "

lii - ;f

''

f... i : 'f . ..

i-•i'i.:''f-

11" ::

COMPOSITION

1

Nb205

Ta205

u3ogTh02

CaO

MnO

Fe203

Zr02

Ti02

ce2o5La205

Dy203

OF PYROCHLORE ON THE MULTI-MINERAL

Ijolite Rook"45

1.4

12.6

4.7

27.0

.2

3.0

.5

2.5

1.3

.3

.1

7PROPERTY

Malignite Rock58

2.8

1.2

-

16.9

.3

n.o—9.1

-

.3

0

Semi-quantitative spectrographic analyses by Department

Mines and Technical Surveys, Mines Branch, Ottawa.

B

COLUMBIUM METALLURGY

FROM THE GEOLOGICAL POINT OF VIEW

INTRODUCTION

The geology of pyrochlore type Columbian deposits is complicated.

There are numerous such deposits spread through Norway, Canada and southern

Africa. All of these bear some resemblances; in fact the similarities are

striking if we consider the uncommon nature of this type of rock.

The African deposits are large and apparently contain less

than ,5# Cb20tj, They are composed mainly of high calcite rocks called

Carbonatites. Grade and tonnage work has consisted mainly of test pitting

with some diamond drilling. Most of the properties mention hundreds of

million tons grading .3^ Ct^Oi;, though some mention small sections grading

1#. From the widely spaced surface trenching type of investigation it is

probable that the extent of narrow high grade intersections have not been

investigated.

The Sove deposit of Norway, the only pyrochlore deposit

presently undergoing production is also a calcite-rich type of ore. They

are reported to be shipping a 5C# Cb^ concentrate.

The Canadian deposits bear many similarities to the forementioned

deposits, however in the case of the Beaucage and Molybdenum Corporation of

America,deposits, the areas presently undergoing investigation are considerably

higher in grade, and contain more iron silicate minerals. The Multi Mineral

deposit is low in grade, but most of the ore contains a high proportion of

silicate minerals. A small quantity of the Multi Mineral ore is the calcite

LIST OF PIHOOHLORB COLUMBIPK DEPOSITS

10

NAME•MMMMBt

Beaucage

Oka Haiti Minerals

Dominion GulfKola PeninsulaSoveChilwaSukuluLoolekopTunduluPanda Hill

Mrina HillNkumbwaFacupiranga

^f&vr ' S*^Y

LOCALITY

Ontario

Quebec Ontario

OntarioRussiaNorwayS.ltyasalandUgandaE, TransvaalfyasalandS. Tanganyka

KenyaN. BhodesiaBrazil

l A S. A- '

TUB OF ORf

silicatecalcite

* fffiATfflf

.77* CbO(•30* '

calcite-silicate .65 silicate .17 - .35calcite

silicatecalcitecalcite jred soil (M-*-.calcite (**calcite rvAcalcitesoil

rare earthcalcitecalcite

NON P1ROOHLORB

Granites

BugabooMountain Pass

Nigeria

B.C.California

graniteplacereluviaplacerrare earth

.25 - .35

.53

.18 - 1.4!.30

t , -30tf*} .20*tne!6CHi.**eP

.30

.601.0

.75

.20• o.-r-.i i.i- i. , i'**-'l li/y*

WP1 (t at v MO or

.26T -3--SX

1-2 Ib/yd."payable"

TONNAGE

2.5 x 106 large65,oooA.f50 x

limited drillinglargelarge (n* ioSUr*' A n~ 200 x 106 f ^

9 x!0c 1.5 x 10C eoae 30 x large large

700,000/V.ft.lewlargelargelow

Grade and Tonnage inforaation hat been kindly offered la conversation with various individuals and ie not official or public info nation; nor can ite reliability be assured. It is presented here for information purposes. Its release or quotation would be embarrassing.

ii o 9 ; i n o

o O tt

•.iOEj.-.-

Apparently pyrochlore is not directly concentratable * and

an indirect mode of concentration is necessary to produce a saleable

columbium product* To this end there are numerous lines of approach

open to the metallurgist and an understanding of the variable geology

of pyrochlore columbium deposits may be helpful.

There are two broad types of pyrochlore deposits, the high

calcite type, and ths high silicate type. Pyrochlore is associated with

the apatite concentrations i* a high calcite gangue at the Sove deposit,

parts of the Molybdenum Corporation Oka deposit, the Haiti Mineral (calcite

zone), and the Beaucage-RankLn Island deposit. While at the Beaucage

Newman deposit and parts of the Molybdenum Corp, Oka deposit, the pyroch

lore is associated wi th concentrations of silicate minerals in a feldspar

calcite gangue.

' The Sove mining company is currently producing a pyrochlore

concentrate from the high calcite type of ore by crushing and tabling

their ore. An apatite-pyrochlore fraction assaying &1 CbgO^ and con

taining 60# of the CbgOe is separated on tables* This is shipped to

Norak Hydro Chemical Company for phosphate removal. The end product of

this process contains in excess of 50# CbgOe and is marketable to the

U. S. Government.

Samples of the Multi Mineral ore have been treated by the same

process to give ths same degree of extraction*

The other approach to the pyrochlore metallurgical problem

is that of Beaucage Mines Limited, and probably Kenneeott Copper (Oka

* On Account of its fine grain sice and other features*

property of Molybdenum Corporation) on the high silicate type of ore.

This entails an* acid leach of a finely ground ore from which acid

consumers have been removed by floation.

The last mentioned process removes a high percentage of the

columbium, in a pure form, at a relatively high cost, while the Sove

process removes 6056 of the Columbian as an iapuro concentrate at low

cost. An interesting point about the Sove process is that their pre-

concentrate assays 6ft Cb^Oe while the Beaucage floation purified

product runs about 1# Cb^O*;.

These two extreme eases are mentioned to show the scope of

approach available to the metallurgist because of the variable character

of the different deposits and also the variable composition of ore from

different places in a given deposit. In one case a small fraction of

the rock (with only 60J6 of the CbgOc) i* removed for concentration;

while in the other process a large fraction containing about 80# of

the CbJ). is treated to produce a high purity product.

Since Beaucage Mines Limited possess the two types of pyroch

lore ore, it is suggested that both types should be investigated sepe-

rately, and from different points of view. To this end, the Mines

Branch, Ottawa are presently testing our high silicate type of ore,

and also the high calcite type of ore from the Multi Mineral property.

It would be advantageous to obtain a NX core, bulk sample, of the

Rankin Island carbonate type of ore, and have the Mines Branch test it

by the Sove method.

GEOLOGY AND GEOPHYSICS

2.

5.

Q)

Bartley, M.W. and Greer, W, L. C.: Geological Report on the Property of Nemegos Uranium Corporation, Sudbury Mining Dist., Ontario, August 30, 1952.

Neczkar, E.: General Geology of the Multi-Minerals Property, Nemegos, Ontario, June 25, 1954.

Neczkar 6 Gaffney: Geological map, l" ^ 200', August 31, 1954. S

Neczkar, E.: Geological Report on Property of Multi -Minerals Limited, Nemegos, Ontario, September 15, 1954.

Gaffney, T. J.: Geophysical and Geological Surveys of a Magnetite-Apatite-Columbium Deposit, September 26, 1955.

G'.'iOI.O'/ITJAI. :"C:'j:1T

y i? : ?.oi-:-'7ry OF i:;':-:.; j:y)S u:i...nr.i:-: niiiT^;:i?;ir'r DIOT/.T^T. O^T

The property consists oi1 approximately 3,200 acres in KcIIaught and Lackner

tov/nslvips, Sudbury Mining Division, Ontario. 320 acres of the holding are

comprised in t v;o patented loss, VJ.D. 275 and I'M;. 2?6, the balance consists

of 72 claims staked in 1949 and as yet not patented. The numbers of these

clair.is are as follows:

52486 - 52501 inclusiv-3, 52947 - 50 inclusive, 53073 - S6 inclusive, 53331

9 inclusive, 53379, 53458' - 66 inclusive, 53500 - 02 inclusive, 53770 -69

inclusive, 54102. Titles v;ere not investigated by the v/riters. -

1X)CATIOH

The principal shov/ings are seven r.iiles northeast of Kemegos station on

the main line of the Cr.nad.ian Pacific Hallway, A passable Rotor road has

recently been built to connect the property v.ith the village of ^emegos. The

latter point may be reached by motor road from Sudbury and Sault Ste. Marie.

The topography is typical of the Canadian pre-Cambrian shield, no eleva

tion bein?, greater than 150' above the valley floors. Overburden is v/idespread,

b '.i t not heavy, probably not avora^in^, over 10-'. .

T-iere appear to be einirle tiinbsr for several years of fu3.1-scale mining

o-:ora,t:i.onr. . -

S^i'.cc st? ! V:in;-; in 1949 the follovrin^ v.'ork has boon erforr.ei by the

1. A r.vv7.2to:r.r?ter survey h a s b-en ::.:ide of the ^ rt ir e ^roup. The survey

r:?::u:ircd the cMttin;; of ovor 100 rales of lino a:vl revealed 28 Magnetic anomalies,

Drilling has b--:--n d'^ns only on three of these.

?.. A scintillometer survey v:as rr.ade to investigate .radio-active possibilities.

So::\-3 radio-activity ',;as ''oi.oct^'l but insufficient v;ork has b?en aono to nake

any definite statement.

3. Considerable trenching and test-yitting has been done on two anomalies and

a limited amount on four others. Kost of this work has revealed, magnetite.

.k. Slightly over 19,000' of diamond drilling, 4300' of X-?.ay type, has been

done. The bulk of this drilling v:o.s on tv;o nagnstlc ano::'.alies and has succeeded

in indicating a considerable but at -res?nt uncertain tourage of titaniferous

r.a^netite-apatitft ore naterial in the I-;o,6 ano:r.'j.ly.

So far as known, no detailed geological survey of McIIaurjht and Lackner

tovmships has every been made but they are believed to be underlain largely

by granites and syenites. The writers examined only the showings in W.D. 275

and 2?6; tliese lots appear to be underlain mainly by nepheline syenite, a rock

of the granite family distinguished by its lov; silica content.

l.'a';r^b;i.te, one of the ore r.insrals of iron, is found on these lots in two

principal nodes of occurrence: . .

("••O Ar a r.-:-r ;e iive^L'T sha; ?.-:l :.~--^ ^'vlic^tod b;- vi.riHi:.^ to bs ?.t least

^ ! ir* l-,ri,f;t!v ^'-/l 100' ir: vddf". I":i- r:.--s-3 is .v.l-:-:oft ^tir.^y ir.aie up of

l''. ti^'.if o'vms •"v-'-oiM.."; ?.nd ax.-ytit'".;. .•^'unutits of t'io or!.-^nal n-^hvdine

n.;''?r't-* i.'.o.y b? four;-; ultMn the :.'."."?.'., This d^/oslt chov-'S no hj'clroth^rvr.a.l

::^-:c.r.v.ls -i:ri r^'.^t b- o .sid-^^rd a-:; u-.x-3 l/'- ^'I'y^tic s:fj'-rv;-;?-v;.on though this

r.rocoss ir.ay not ha ;,r e ta':en place "in srtu". Di*ij.l 'ioles are too \ridely spaced

to calculate tonnage but there is little dou.ot re^rdiiig the existence of a

considerable volun-e of material containin-;; 10 to 25 per cent, apaptite and 60

to 75 per cent, titanifyrons rnagnotite. Ti\.is occurrence is on v.rhat is known

as the No,6 anomaly. Sorr.e. of the other anomalies nay be caused by masses of

magnetite-apatite rock: they could also be caused by veins and stringers of

magnetite scattered through the syenite.

(b) Veins or dikes of almost pure tj.taniferous? rusjnetits up to 30' in v.ldth,

Insufficient drilling has bean done to determine lengths. The writers believe

*

this type of deposit vdll prove to have a very erratic distribution and riuch

drilling vdll be necessarjr before tonne--es can be estimated, but it would seem

likely that a. fair tonnage could be extraced by underground nining operations.

Several exposures of this type of vein are knovai, namely, the McDonnel

vein, the Creek Vein, and the Mcvittie vein, all on lots "J.E. 275 and 2j6.

Tv/o carloads of hard lurip ore from the McVittio vein v;sre shipped last vdnter

to Dor'inioii Foundries and Steel Limited, Karultoh, Ontario, with results

discussed belov.'.

f.

con-

T';e Cor-: anv lv s oy s r 500 s'lr-irltjy on h-inci v.'hich hay; bT?n s-.1:11 fro:; the '

r'ri? l •••or-js; J;; o r .le r to •vonsc-.'rve fu.Tls, t lies a saalc-s have not v ci t ba^n

•:;.n:0.yssd. At the :.o::^:-;t rolati.v-i]^,' I'ew analyssy are available for the purpose

of eb:.iputin : ; r;rale. Ir. t'~:a f oil ovdn.^ tr.b?. e the writers list what the"

;::;.dor to be the; no.st significant ana].yses, 3^ in mirr.ber,

l 2 l 3 f ' A ] 5 6 7 6 9

48.04 44.29 50.12 52.10 52.2 26.0 3S.O 46.2

50.76

0.80 2.52

2.35 3.35 3.76 2.S3 3.61 9.71 7.22 6.96 4.94

0.050

Iron

Magnetic Iron

Silica.

Phosphorus

Sulphur

Alumina

Tit aniv-a Di oxide

1.03

12.09 5.S4 4.49 1.89 6.34 2.77 3.91

0.39

12.48

0.77 0.95

llote: Samples l to 24 are of rm^netite-apatite ore material.

l and 2 K. B. Hatch j 3, Snider raningj 4, Jonee-Laug'ilin^j 5 to 9 incl., Inc. ,

1-.-fv.

10 31 J 12 13 14. 15 16 17 18 \

2.'.'- A6,a 50.32 49.67 52.59 35.35 51.94 50.64 53.40

~ roa

I-'hosrorus

Sulphur

1.90 2.10 1.50 20.65 1.70 1.45 1.50

3.69 4.98 2.36 2.14 2.60 0.13 0.71 0.71 0.92.

0.60 1.07 nil 0.03 0.03 0,58 nil

Dioxide

Magnesia

Lins

3.90 3.85 S. 72 8.84 10.28 3.94 6.28 7.14 11.88

0.7.3 0.75 0.73 1.34 0,71 0.71 0.92

10 and 11, I. M. Co.; 12 to IS inclusive, 'Jnyd.er I -lining

Sulphur

Alumina

Titanium Di. orods

I' agnesia

19 - C) 21 22 23 24 j 25 26 . 2?

45,70 55.70 42.70 47,00 47.20 21.20 6.3.00 61.37 -61.87

11.22 0,50 1.12 1.22

0.665 0.963 1.10 1.06

61.93

?~5l\ 27.29 1.21 0.56 0.64

1.03 1.67 0.13 0.004 0.02

0.002 0.036 0.037

0.79 1.61 1.45

6.72 4.60 3.90 4.20 2.80 6.30 6.68 8.44

trace 0.26

trace 0.52

1.32 1.39 1.26

Hots:. Samples 25 to 36 inclusive are of '.i:xrd lujap ore,

19 to 24 inolus.ive, Cleveland Cliff Iron j 25, Jones-Laughlin Stsol; 26, Republic Steel;

27, ^public Steel.

Sulphur

AliurJ.na

Tit.xniura Dioxide

- 33'. 3461.00 61, 5

31 .- . 36

63.64 62. 61 61.71 62.26 62.80 61. C 62,?

60.36 61.44

1.20 1.20 0,56 0.27 0.45

0.03 0.016 0.004 0.11 0.012-0.00? 0.016

0.037 0.023 0.032 0.016 '

1.52 1,53 0.96

7.95 9.35 9.17 11. Ci 9.00

0.19 0.12 0.22

0.052 0.04 0.03 trace

1.08 1.52 1.32 1.47

7.75 11.70 1U33 10.75

inclusive ' fc'P'fclic Steol; 34.. Cleveland Cllffaj 35 and 36, Int.

to t! .'.; rritrrs 1 . Fo?. ? ov.'l! 1..;;; is t':M? oata frorn v:Mo;i th?/

V- J-xr.v-osito fi.-v.-i. le fro:.i C'-154.9' Sa/rlo ta'rsn by ' '.r. l i. 3. Hatch

3j -'00 Ib. V:.14 rJ:.-.; .Ir? t •-'.P : IS " "7 "* K tt5 ; nLo " "LI "LJ?' Taken, r.rtfL3 " "L4 " "[5 " "Lo " "L? ti -Le " . "19 "lo - "?1 " "h "b " "'\j, H H

Ik ?a:-vloor 'iT'J an

11ttI!It

II

It

tt

analyseditttiinntttitinnnn

t aaly

ttn**

!I

II

tt

1!

-J^'

II

"

tl

II

tt

II

II

II

It

II

II

II

. ' : L . - ' (\ i 4 'o...~ ' '

tJ'A by JoP.OS" Ir: barrtt11ttHitl!

Sny .le r !:inir1!

tlIt

"

II

tt

,,-. TT.*...,, ' ,,., f .-. ?b Ui •J.1..LU..I J J, .

t-. L-.i-'-iliri Styi;1 ' 1 1 o: ial 1 .i o k ol

n n1! 1!

" . tiit - tttt titt tt

15 Co.itK1!

.11

11

II

Cleveland- ClSf f s Iron Co.nnitttn

It II

II 11II ,,

II II

It It

r.alysj:l by Sny-.l^r IlinLng Co.1 Cor oration.Co.

11 600' K. of trench, on Arr;:r.a!y ,v5" 1?00' W. of bas3 line on line X" 1500' '.-. of base line on line X" A:io."'.a].y f/6-4' chip sanr^le across trench" A:-ior,'.aly ,':6-D.D,H.,,'"'P.2-155'-15- 1" Anomaly ,;'6-D.D.K.yP.l-152'-154.9

D. O.K. ;' P-3.D. D, H. , ; P-l.D. D. H. t - P~6.Fit. ,r4 on Ano:aaly #6,Fit. 3.Fit. v2.Fit. f/l.Trei-ci; on Anomaly .76.

n ir ir ittt tt ti ttti it it ttt: it ir itit tl tt n

6-33 Takers 4 Taken an:l

f.'

l

analysed, by Jones i: Lau^hlin Steel Corporation - Hard L'anp Ore. :'y Nerr;e;5os Uranium Co. Analysed by Ilopublic 3tesl Corporation Buffalo, K.Y.analysed by Clovoland-Cliffs jj-on Co.

2.r.d aria}ysnd by International Nickel Co., Co;yer Cliff, Ontario.

f"l:i' *p,-

i

The ror-.lts of 24 ?n:-r les of nc^notito-apatite oô? are available. Taking

arithmetical average:; of these sample';, the following results are obtained.

(it v;;']l bo noted that nor.e of the analyf;';? is; complete for all ingredients.)

I ron —46. 0J.VjTitaniuni Dioxide -6.13I'anînese - O.B4Phosphorus ~ 2.89Silica ~ 6.07Sulphur -0.30

The phosphorus content corresponds to a 3.5.9 per cent, content of apatite in

the magnetite-apatite ore material. The remaining #4.1;S is mainly titoniferous

â^netite but vail include1 sor.ie of trie syenite. The silica content of 6.07,3

is higher than would be expected fro;;i the appearance of the magnet it e-apatite ore

ir.ateriul. Three analysis, flos, 15, 19 and 24, are nainly responsible for the 6.07

f:1 gure and may have been given too !iuch vicight in obtaining the average for this

ingredient. The iron figure of 46.08,o l')o!:s reasonable in viev; of the results

obtained fro:i samples land 2 (composites of drill holes F-l and P-2 v;hich are in

the heart of Ho. 6 Anomaly).

HARD LUMP ORE

The results of 12 samples of hard lump magnetite ore are available and are

shov/n in the previous table (sarrv les 25-36 inclusive). Taking arithmetical

averages, t;ie follov/in^ results are obtained, (it will be noted that none of the

anslyses is complete for all ingredients).

Iron -62.20.;iia-jrietic Iron -61..??Si?i-a ~ 0.76J'h 33; horns ~ 0.04Sulphur -0.02?hr.i';-.nese -1.33'Alu-rLna - 1.31 Tita-run Dioxide - 9.13

Thin is t''.e type of r;#.torial rrikin.c; uj 1 the tv;o carload shipment treated in

the open hearth furnace at Dominion Foundries plant in lii-vilton 3.ast v/inter.

The property ov/ners believe they can produce, three products which can be

Marketed. Their belief is based on laboratory rr.etallurgical tests on the

r?agnetite-apatito ore material conductsd by Allis-Chalners Co. and by ^er^ublic

Steel Corporation, The vroducfcs would be as follows:

1. A r.a^nstite-concentrate resiO.tir.-r fi'om treatment of the nvap.netite-apatite oi*e

material. It is thought this -roduct v;ould cor;t'iin art.-i\)ximately 64r' iron, 7Ja

tit-iniu?. dioxide, 0.27-^ phosphorus, .a":d IxJ Silica.

2. An apatite concentrate, containing about 16.6:9 phosphorus, equivalent to

SlfJ B.PJ,.

3. Hard lump ore containing 62* iron, (;'a titanium dioxide, 0.04,'s phosphorus, and

negligible amounts of other impurities.

A ?ror.i;:ary of four netallurgical tests is set out below:

. ^/.iV' -..c Sl-,o-Q. C-jrr.tirrbic-n T^t';. A'-ril 3.5. l? 52

f". .l'--.f

•1,Vf".

fft"if"fir 'i"1

1"

1 .Ir '

|;f:-K

f: ,||; ;. ^^^

"i---'W:'

('~ ^ , k

'1JO2 -j:-

. . Ci."

100

9-03 .."3

r.1 "';:!' i!

•j or t ra':

•'.-•"os .'/4men D

coni rat

or••-vis'o C.

o i. 'itivico s A

i. analTube

.c •-•-•etc

--i: ril1 ' 1 1 ' *) O

"- " .d*"*T r*

o--)'.'C-:i ?.t

c o ne ed at

Cleveland-

•* o* •••\

Ho.

192021222324

-xle K:-r

455542474721

e adIron

.70

.70

.70

.00

.20

.20

Maoris

fj Weight

698363706330

.01

. 64

.59

.00

.48

.06 '

:'itr:j'l f, v^

ritr.'!10 ~

.4

\ J

100.tes 67.esh 63.

100.tes 70.^qh 71

Cliffs Iron

tic.y

6365•'U646761,

ConcenttIron ^

.SO

.40

.00

.70

.ac

.70

,.i Iron fo Iron ,'j Ihos- Titan. ;"J Iron hh j.a'psl/ic Tot-il vhorus Diox. Recovery

00 46421

00 400o/,

Co. Te

rate

Silica

0.750.100.100.280.121.40

3.53 45.64.62.

4.76 47.63.62.

27 4.36 0.45 0.

17 3.96 o.28 0.

80 4.20263 4.20721 4.33 94.10

72 5.20104 5.36J^o c*3) - ri* n'*/i y -^ ^ T/t *-l7i ^*i^

Kts, November 12, 1951

# Titan.Dioxide

11.2065.00'6.60

. 5.505.558.20

Tailing ;t*^

Iron

5.405.905.505.70

11.402.50

Iron".le c o ve red

96.3497.6095.3296.3691.1991.84

Snvder I-Iining...Co. Tests,,\ December 27. .195.0. -* 600 Ib. sample.

Crude OreMa?n?tic"on-IIa.-^ne'.x\'\ cv;ati

Concentratetics dc::liT.iedt? floated.

^Iron

50.1264.652.761.95

et

Fhos'hons3.7660.235

16.170l6.f*30

ffSilica0.800.351.460.36

Cf

Line12.480.70

52.5652.78

2Titan. Diox.

12.098.453.843.96

r? v."'.s yro'lucoi by t 1.vx-;t,::.t", v:at concentration.

t;

Livjr. cor c;.;'tt r:-b c A abiie c o: .c o at ra S', e

',t /J

Iron

46,46?. 82.0

••f. Fhosrhorus

5,00.47

16.4

4

Titan,

5.,f ,0.

Di ox.

420?

ground 93,* passing 43 nssh screen)

A ve ra^j.n 3 the four tests indicates an iron concentrate v.'ould have the following content:

IronPhosphorus Titanium Dioxide

- 64.61 (10 samples)- 0.269 (4 samples)- 7.16 (10 samples)

Averavins the Snider and Alii o-CruiLners tests indicates the apatite concentrate v;ould have the follo'dng composition:

Phosphorus - 16,6 equivalent to c3.03.j Bone I'hosphate of Lir?.eIron ~ 2.0Titaniiun -2.0?

There is s. qreat discrepancy between t!:e titanium dioxide content of the Snyder and A.Tlis-Chalmers tests; the v:riters are unable to explain this.

Tv?o car].oads of ha.-d lump ore v/ere treated by Doninion Foundries and Steel Lirdted, Hamilton, Ontario, late in 1951 or early in 1952. A letter dated February 12, 1952 witten by Hr. F. A. Loosler, libcscutive Vice-President of this company, refers to eleven test heats in y-hi c h the ore was used both as charge ore and feed oro i ii their oren hearth furnaces. The letter coupares the behaviour of the ore favourably v.lth "Cliffs shaft lurnp" ore, a prerpiura lunp ore rained in Michigan, K r. Looslev request -jd another tv;o carloads bo shipped.

' r, ; ).. X. '"TJ.-'.sr;, A s vi s t an t Chief Kotallurî.'v'v for the Re;raclic Steel

ôr?ora ; ,i::n, infer, '".i one of tho wrvtero (C-re^-r) 0:1 ;V\;;ust loth, 1952, that hs vras

iifidsnt. !*'j;:V3 :-*os hard lunp ore would be s at i sf-actor/ as a charge and f'ied ore. A

letter fro:-. t/^.s ên tiernan date I February 15th,, 3.952, states that the rurchas:'.n :"

j? -.rt i^.-v. of : ?.op'i.b?.ic i'; 1?^! h c. s b: en ô.-it a rs.]u.l3r'.tion to purchase tv;o cars of

I'ejr.eôc; hare! limp as soon as possible. This :r.ateri?.]. vdll be tested by Republic

Steel in their Buffalo plant as E con as it can bo shirked by t?:3 l!einegos people.

The oro his already been broken and shj/mftnt is expected '.dthin the next few we-sks.

The foreôinr; would apvear to establish that I^rne-gc-s hard Ivunp ore is a de

sirable product for charge and feed ore to the O] en hearth furnace. It vri.1.3. of'course

be necessaiy to convince 'other prospective cxistoners as to the merits of Nemegos

hard lump ore and in view of tho v/sll-knovm conservation of furnace operators, the

;na,5pitude of this ta.sk should not be ualcr-sstiiuatecl.-

There appear to be no serious technical problems involved in making a titani-

fcroiio na^netite concentrate fro;a tiie r-a^netito-aratxte ore. Grinding to 93f* rcinus

f.rj r-iosh I?.:AV be necessary. The v.^.gnetite concentrate so produced v.Tould have to be

a.|y-;.1o;ri-3rat3d in sone -uanner, necessitating a heavy invest;nent in plant. There doss

not appear to bo any information v:hether such a product would be readily acceptable

to steel plants. In view of the prejudice against titauiferous iron ores, some

difficulties in marketing can be expected. The 'rices at which both the luinp ore

and the -".a-^netito concentrate v.ere v:old would be a natter of negotiation between

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Th;1 ! avuilaM.c; ';.':s.ntiiy an' -:;r..v.i'?f; o.0 na;r.etiio—u; atity or^ rvaterial and

hard lu.r.p or-;- iv h-:nld be doLor^ned b;.' underground work and. More diario'.id drilling.

I'll thir connection it should bo ::.?n!r.cnc;d that the Go^f^ny plans on brin^lr.-; in

a : .1-".r.t a;-vd "oitr^ underground no:-:t winter.

(l) ' T'"; o .':;.iac of the n?,r!:et availabl.e .for titaniferous lurr.p' r.agnetite and for

titv',r.: f::rous pa.^netito concentrats? has not beon ascertained. The rrice per

tori obtained vr.3.1 be a matter for negotiation bstvroen buyer and seller unlike

the c;;se of a standard her.iatite ore v.v.ose value can be readily calculated.

T:lt:.-.niferous niagnetites con bo used for manufacturing pig iron and steel

but rmny furnace operators h?.vo a y-re.judice against na*netite since it is harder

to reduce arid tho furnace output is snaller than is the case vrith hematite.

The prejudice ?.^ainst ti.taniferous rva.^netitc is even stronger as titanium in the

charge causes sticky slag?- utiless e:-:tra hif;h ts-npsratures ara maintained. On

the oth-^r h.an:l, the ].ov: silica content of both the lurnr ore arid the magnetite

concentrate v.'ill b-j v.'elconed by ore buyers. By aiid large it may be concluded

t!i':.t a strong selling organization ^111 be necessary to market titaniferous

magnetites,

(c) Tile ruininum annual production necessary to obtain a profit has not yet been

calculated, normally, iron mining joust be on a s.cale of at least 250,000 tons

per year to be profitable.

(ri) Tiie cost of waking tho magnetite and apatite concentrates has not been worked

out a-:.! cannot be until !:iore expeririental v.'ork has been done. The amount of

•;rof:.t. to bo e'/, e^l.:--'. therefore, c'mnot by pro-licted.

?c'ei;;.it rator- to con3ir-:'.in - cont.rof; Jr.'.v.i not b^-n established, nor the

WTt3y. 'i': 1. e :lro!i ' vo.l.uots id. ?,ht bo shi;-.-od by r~.il to McO-ro;.;or Bn^- or Britt

on I.a'.:^ 'inro-i, nir.t'vv;cs of about. 225 • •f.los, or to 1-achiricoten Harbour on Lake

.i'r'^lor, -i dist-".:icc of ;.0)out 3/^0 ::ij.lv's. The re].ativo proxir.uby to ths jreat

T.akei- is a docided asoot in favour of t'.iess deposits. Loading facilities vrould

have to bs provided though ] i':ely not' oo elaborate as the Stc^p P.ock ore dock

at I'ort Arthur. So.ne fora of government -r'.Soifjtance ni^ht be obtained.

Respect full:/ subssitted,

li. \ l. Bartley, p.

.L.C. CJreer, P. '-Hug.

Port Arthur,, Ontario August 30, 1952,

&SOLOOICAL ESPOB'? OH PHOPSHTY O? MULTI MIH3IULS LTD*

NEMTSGOS, ONTARIO

BY

B.

Ganaral

rocks oa the property and in tha immediate vicinity ara pr*doain~ antly oyanitaa of sevaral v&rietios and agaa. A banded syanitized gray rock balievad to ba sedimentary w&s tha only other rock type oncountorad while mapping. Coarsa n*phalina syenite which is very high in soda content forms a larga intrusiva body of undetermined extent* On tha property it surrounds a crescent of country rock which extends through the center of tha property and passes out tha east boundary on both ends* This crescent is conposad of medium grained, low nepheline content syenite at the southern end for a third of its length and altered sadiaents for the remaining two-thirds* Bocks in winerallssad areas that were pyroxenized to such an extent that their original identity was obliterated, were mapped separately at various points along tha

Outcrops ara scarce over a large part of the property and consequently tbs map is of necasaityp very general and based on geophysical data and geolo gical theory* Structural features such as strife* and dip of bidding, strike and dip of flow structure, general trends and patterns* and degree of contact alteration ware given prominent consideration in drawing up the oap* Glacial boulders (assuming ice novoieant to have bsen approximately South U5 degress West), •upheaved rocks, and elunp boulders on hillsides were used as general guides in overburdened areas.

!Ph* area immediately around and south of I.ackn*r Lako is moderately . to heavily ovarburdenad with irregular hills and eskara of clay and boulders. 5?ha area wast of the Neraegosanda River is covered by glacial sand outwash with overburden estimated from the depth of kettles and stream val l ay 3 to be in th* order of 100 feet*

Tha property has seven prominent hills standing from 150 to y)0 foet above their immediate surroundings* These are composed largely or wholly of syenite and are covered by thin glacial drift. Bach IB bounded ftt least on one sida by a cliff or a steep slope suggestive of being fault scarps. Maxi- num raliof between the highest point at the north central end of the prqparty and the lowest point, the Nemagosenda River, is 5^0 to 600 fe*t*

ffab'i'S jif gorraatiomi

Jlock

3

7

2

l

S

5

9

Di abas 9

Bephalina Syonita

Crystalline Magnetite Veins

Magnetite-Apatite Zona 3

Nephalina Diorite Gnoiso

Nspheline Diorite

Nephelina Syenito, Naphalino Monzonite and Syenite

Sadlnsats

]Do8crintioa

Pin® to Bsdivira grained*

Madiua to coaro* grained*

Naarly pur* titanlferous magnatits.

Granular, waditca gralnad* Incltidas nearly pur* nagaatite-sipatit^ s on* s and magnatito-apatito zonae with

Fine to maditta grained (alteration type rock).

to msdiim gralnad (alteration typa rock)*

to medivua grained*

Crsnarally pyroxa&ized or foldspathisad Of ton grading corsplotely into naphalina eyanita (7) at contacts* Mostly gray- wackd and minor tuff*

3DESCRIPTION 07 BOCK CTPES

Sadi.aatg.

Rocks classified as sediments arc fins to aadium grainad and vary in colour from raadlum to dark gx-ay* Feldopathization or pyroxanlzation has progr333dd so far that tha original minarala and part of tho structure have basn destroyed, bat most of tha rock probably was a greywacke* A vary small amount of Quartzite was found north of Ho* 7 Anomaly and tuff was noted in saver*! drill hole S3* In the araa inmadiataly north of No* 6 Anomaly the sediments ara schis tose with only disseminated feldspar crystals*

The main distinguishing feature i a banding which has a directional trend varying not more than 90 degrees and averaging about North 5 degrees West. She cooroosition varies froa band to band and along strike, suggesting that tha band- Ing is not gneissic, in which case there would probably be greater uniformity in conposition and structure,

Kejaheline ^yenite* nepheline.MongOQite and.Syenite (Type 5)

5?his group of rocks is believed to represent at least two intrusions and probably contact alteration phases* They are grouped together as Type 5 because of mineralogical and physical similarities and their close association*

CoaiQoaition 5a —5b

Feldspar (Orthoclase) gO

Nepheline

Pyroxene 5

75

5

5Bock typd 5a IB a fine wediua grained syenite consisting largely of

orthoclase* It occurs west and south of Oaap liake,,

fype 5b is a medium grained nepheline syenite with long orthoclase laths arranged in randoa fashion. This rock type is found around No. 6 Anomaly, and in a few outcrops and in float north as far as the northern boundary of Lot W D 275*

Either of the above rock types which are only weakly pyrcQnized are called 5 even though their pyroxene content may be higher*

(Type U)

Feldspar (orthoclase A albite) 30 *

Pyroxene (aegerine w augite) UX) c* 70^

Nephaline O w

ffhis rock is an alteration type in which the structure of the original rock has been entirely destroyed. Soda and iron tearing solutions, cooing through numerous tiny fractures and pore spaces recrystallised the rock and altered aost of the original raineralB to aegirine-augite, nepheline and/or albite, Where fractures were large and diffusion incoispletQ, veins of mag netite and pure nepheline or pyrochlora-bearing napheline occur* In eoaa instances veins of pure pyroxene ware found*

2?he rock is fine to nediua grained and vory nuch resenbles basalt in appearance* In some areas the rock way have numaroua white blobs of feldspar about the slae of peas* ffhis may ba due to a different type of alteration or a difference in the composition and structure in the original rock* In order to provide a marker it has been logged ae Type ta.

nepheline Picrite Sneisg (Type 8)

{Phis rock ia identical in composition to Nepheline Diorite (Type H) and is believed to have becoaie gneinsic during the intrusion of the nepheline Syenite (Type 7)0

Mineralization (Type 1) and Crystalline [Magnetite 8.) ar9 discussed under the heading "Mineralization" e

jfephaline Syenite (Type 7)r

CpMposltion Sa,nge

Feldspar (orthoclase) l}0 w 60J^

Nepheline 15 - 55^

Sodalite O ~ 10^

Pyroxene (aegerine ~ augite) J -

Biotite O ~

Cancrinito O ~ 60^ trace

Serecite l ~

Two principal types of sye&ita having oinilar texture and coapoaition noted* 5?ha ayoaita in tha central-eastern and north-aaatsrn part of

the propsrty contains nadium to coai'33 equidimensional crystals and lo ex- trensly variable in composition, Tha syenite noar tha western boundary of the property immediately east of the Ksissgossnaa Rlvsr for a width of 2000 feat and running the entire length of tha propsrty has excellent flow struo* txxre. Th3 feldspars occur as long rectangular laths averaging 1/8 to 3k inches in vridth and ^ to 1-| inches in length* The composition 0f this syenite is extremely unifoiia thronghouts

Diabase i

Cquroositipn

Plagioclase

Olivine 5

A\jgite 30

Magnetite 1

Biotite l

Calcite O

The texture i D fine to medium grained diabasic although some chilled dykes look aphanitic* Calcite occure within the dyko as tiny white patches or soaetimss as

Diabase dykes cut all of the other rock types* IPhey vary in width from a few inches to as much ae 10 or 15 feet. In general they do not appear to have a definite pattern, .

Drilling around No* 6 Anomaly has indicated ona dyke varying from l to 3 feet in width which is nearly horizontal and has a naximum dip not exceeding 15 degress. In No. 3 Anomaly the dykea follow the long axis of the orebody. These dykes often occur in groups and are probably branches from B single source, since drill intersections of tha same group at depth always indicate a smaller number*

In some places dykes follow fault zones and are associated with con siderable fault gouge, but in other places they do not follow any particular zone of weakness* Multiple intrusions of diabase are quits common*

Geological Relation of th.a Rocks

She sediments are the oldest rocks in tha area. They were intruded first "by syenite of Typa 5b* Very little is known of the siee of thane early Intrusions "but thay appaar to extend southward from tha property,, Tha contact effects ara very vague and appear to ba limited to a eniall amount of assimi- lationo

Nepludina syenite (Typa 7) was ths last Intrusion* The limits of this syenite "body are not definitely known bacavise tha surrounding territory la haavlly overburdened* Ths eastern margin is somewhare between 5QOQ and 10,000 feet east of Lackner Lake and tha western "boundary is probably soiae- vrhera immediately along tha Nsmegosenda River. Nothing is known of the north and south limitB*

Within tha property, the sediments and early syenites form a crescent of country rock surrounded on all sides by later syenite* The syenite east and north of the crescent is highly variable in composition and possesses no flow structure* The contact is often undefined and at least part of tha syenite is completely altered sedimentary rock*

In altering to syenite the "basic elements wera removad and potassium and soda added. Wharo the process is only partly complete, the sediments have a bleached appaaraaca and contain pods of dark minerals or9 in rare instances, "blobs of magnetite* Nepheline and orthoclase occur as crystals replacing tha original rock constituents. Syenite formed by this process IB very heterogeneous in composition and texture*

The syenite bordering the w&st boundary of tha country rock has wall developad flow structure* It was probably intruded as a viscous mass of crystals very near the point of solidification* It extends north and south to the limits of the property. The width has not been established, but It is estimated to be not more than 2500 feet with the western "border somewhere along the Nemegosenda River.

Both varieties of syenite are undoubtedly connected at depth below the crescent of country rock and both varieties have been Intersected by drill holes in mineralized areas. Drilling also shows that there is considerably- more syenite at depth than on surface*

The mineralization is directly connected with the nepheline syenite (Typ-a 7) but the exact relationship has not been determined* Pyroxenization, which attended the intrusion was caused, at least in part, by the injection of magnetite, The contact between the syenite (Type 7) with flow structure and the pyroxenised rock is sharp, and inclusions of the latter have been noted. Therefore, it is Suggested that emplacement of the magnetite and apatite probably occurred while at least part of the syenite was still molten*

Further support of this theory is the fact that the nepheline syenite doss not contain distinct voinlets of magnetite or apatite, although the syenite i B closely associated with the mineralization,

Pyrochlore occurs in the magnetite veins, in tha magnet! te^apatite bodies, in naphalina veinlots later than the magnetite and in late phaaag of th-3 oyenita. Small quantities of pyrrhotite and traces of chalcopyrite ara found in the magnetite-apatite masses and in soraa of the syenite*

Paul Jb. ing.

Except for No* 6 Anomaly most of the mineralization is controlled by shear aonea, breccia zones or fracture Konea. No* 3 Anomaly contains a number of closely spaced shears parallel to its long axia, along which magnatita and apatite were injected and froa which they impregnated the surround** ing walls.

She No, S Anomaly mass has the characteristics of a magmatic intrusion* The chape of the mass and appearance of the surrounding rock suggest that the original rock was removed upward as a fault block* The east side of the mass is bounded by considerable fault gouge which appears to be pre-oro. The wall rock lo brecciated and fractured and contains up to UO^ magnetite as veinlota and blobs*

The rocks in most of the mineralized areas in Lot W B 275 ara breccia-* ted and fractured with mineralization occurring amontj the breccia particlos or in the fractures. Granular magnetite and apatite, magnetite blobs and magnetite' vains and volnlets are common forms of mineralisation, Bssidas being porous, much of the pyroxenized area was closely fractured, to perait the penetration of ferrie and sodic solutions during alteration* After pyroxenigfttion, these fractures were injected with nepheline which ofton contains pyrochlore, soaking much of the pyroxenised rock colunblura bearing*

Where sediments are vory schistose, as around No. 2 Anomaly, there is considerable mineralisation without notable fracturing because of tha porous nature of the schist. Drilling in No, 9 and No. 10 Anomalies has indicated that the area is moderately faulted and fractured with replacement veins -of magnetite and calcite, veinlats of nepheline and pyrochlore* replacement dykes of syenite, and intrusive dykes of syenita*

The area east of the Department of lands and Forests fire tower has a definite shear pattern, as indicated by the trends of magnetic anomalies* The shears strike north Ux) degrees west and north 20 degrees east. The pattern over the Hulti Minerals property is similar^ but not as distinct, and there appear to be numerous exceptions.

?03t~0.r3 T Paul t ing.

Topographic features suggest poet-ore faulting but neither geo** physical nor geological data to data indicate any significant displacement. There ara several scarps on the property, the most notable of which are two largo hills of syenite immediataly to the southwest and northwest of No. 6 Anomaly and another hill of syenite on Claim S-52U92 at the south-central end of t ha property. In each case the scarp is V-shaped, one aria bearing north 20 de^reas east and tho othor north Uo degress west, paralleling the general strikes of the inineralis:ed

Tag aost striking topographic features are two gorges, one of which is 1100 feet oast and the othar 2600 fost east of the Departaant of lands and Porasts fire tower* Both strike about north 35 degress wast and ara . approximately 2^0 foot wide with a maximum depth of 2pO feet. 'The rocks in this area are too gradational to establish positive displacement but if displacement has taken place it is extrsaaly small*. In addition to these, tharo are numerous minor topographic features such as streams and shallow depressions which haves similar trends* The general pattern on the property ia also similar to a regional pattern displayed by rivers and lakes within a 50 mile radius, particularly to the south of the raap aroa.

There appears to be little doubt that post-ore faulting has taken place, either in fresh rock or as ronewsd movaraent along pra-ora faults* In coraparison with the earlier faults, these post-ora faults ara soaewhat longer, cut all rock typas (except possibly Type 3) and are probably a part of a regional system* However, this faulting has not produced any appreciable displacement in any of the mineralized eonss and appears to be of no significance in the economic geology of the area*

Mineralization

The No. 6 Anomaly mass is a magnetite-apatite intrusive containing approximately 70 percent magnetite and 22 percent apatite. It IB very uni form in cpTQposition except for very Minor inclusions* of barren rock. The contact between the mass and the surrounding rock is very sharp but tho wall rock is wall brecciated on all sides and contains up to l{0^ magnetite for a considerable distancse, Magnotita veins are quite numerous along the edges of the magnatite-apatits body and in the surrounding rocks.

The magnetite apatite ratio is 3 * 5 B l by weight and the titanium iron ratio in the magnetite is l j IS. About S.% pyrrhotite and traces of chal copyrite are associated with the magnetite* Assays show that traces of uranium and thorium oxides, O.yO per cent rare earth oxidss and 0.15 Per cent columbiuia pentoxide are present in the magnet!to^apatite body. It is balieved that these lattar groups are contained in the pyrochlore minsral- iaation*

In No. 3 Anojaaly mineralization took place along a series of clooely spaced shears. These shears parallel the long axis of the mineralized eone and are still dlotinguishable at the northwest end where tha fault gouga V&Q not dostroyed by mineralisation, A single shear crosses the mineralized zona at Lackner Creak and is partly mineralized along its length.

The mineralization consists of granular apatite and magnetite which occurs as stringers or disseminations throughout the wall rock. Well min eralized sections contain up to 4o^ apatite and S6^ magnetite. The mag- aotlte apatite ratio varies but averages about l S 2* The titanium-iron ratio varies considerably but la roughly similar to No, 6 Anoaaly* Yellow pyrochlore occurs disseminated or a3 veinlotso The zwaraga colurabiua psn- toxlda contont is

No* U Anomaly is similar to Ho. 3 but is less mineralized and theratio is higher bslng l ? l.p,, No. 5 is also similar to

No* 3 anc3- i1213 a magnetite-apatite ratio of l S l* A snail body of magnetite and apatite 1400 feet southeast of Ho* 6 Anoaaly is very ouch like No* 6 but baa a ooaiewhat lower magnetite-apatite ratio of 2B 5 * l* Ena loagnatite- apatit'j ratio decreases consistently in each of the succeeding mineralized sonea froa north to south in the araa southeast of No* 6 Anomaly*

Rock alteration is generally waak to moderate around each deposit. Columbium content of each mineralized sons is in the neighborhood of 0*20^ with colufflbium occurring in yellow pyrochlore* The pyrochlore is partly contaaporansoua with the apatite and magnetite, and partly later.

Around Ho* 6 Anoiaaly and in the anomalous areas in Lot W D 275 to tha north, magnetite occurs largely as veins, veinleta and "blobs. Granular apatite and lesser quantities of granular magnetite and apatite occur in comparatively saall amounts as narrow seams or in places as breccia filling* The vain magnetite has a titanixua-iron ratio of l S 12 which is somewhat higher than that of the granular magnetite*

Yellow pyrochlore occurs in nepheline veinlets throughout most of the pyroxenized rock in Lots W D 275 aw d w D 276, as wall as in soae of the partially altered medium grained type 5 syenite* These veinlets often follow along magnetite veins and are of slightly later age* Although pyrochlore and aagnetite are associated In this manner, tha greater part of the pyro chlore occurs without jaagnatite and the distribution does not coincide with the magnetic anoaaliea*

Hoc 7 Anoisaly is caused by disseminated magnetite in calcite veins and in the wall rock. Some disseminated apatite is present, but veins and stringers of calcite ara the dominant type of mineralisation* Coltunbium mineralisation is weak*

Mineralisation in No* 9 Anomaly is located in sediments and consists of dissaainated magnetite, calcite voining and pyrochlore in nepheline veinlets. Columbiujn occurs in moderate amounts and is comparable to that in the pyroxenized area in the southern part of Lot V D 275*

The Ho. 10 Anomaly area is also in sediments and is only mineralized. Magnetite and calcite constitute the greater part of the mineralization. Pyrochlore is very scarce and apatite occurs in very smallamounts*

Nsmegoa, Ontario,Ssptembar, 15, 195^o E.

MILLING RESEARCH

i v

l J Allis-Chaljners : The Concentration of a Magnetite-Apatite Ore by Magnetic Methods for the Nemegos Uranium Corp., Buffalo, N.Y., and the Identification of the Titanium-Bearing Minerals in the Ore, December 30, 1952,

2. Aerofall Mills limited: Report for Multi -Minerals limited, Aerofall Grinding Tests on Magnetite-Apatite Ore, May 1954.

3. Aerofall Mills Limited: Report of Grinding Teats on Multi -Minerals (Columbium) Ore, Aerofall Testing Unit - University of Toronto, February, 1955.

Department of Mines and Technical Surveys : A Chemical Method for Producing Niobium Concentrates from Ore from the Nemegos (Ontario) Property of Multi Minerals Limited, Toronto, Ontario June 30, 1955.

5. Reimers, Jan H: Final Report Regarding Ore Dressing Tests Run in Norway on Columbium Bearing Ores Submitted by Multi Minerals Limited, November 4,1955.

6. Battelle Memorial Institute: The Acid Leaching of Apatite from Magnetite Ore, December 30, 1955.

7. Weaverj/B.D.X': /Department of-'Mi'nes and1 Technical Surveys: Results of Mi^JTest, MUlti-^Minekls Limited, March 195"67 "

8, Weaver, B.D.: Memo to E. F. Carr, No. 6 Orebody, Nemegos -Magnetite- Apatite, September 7, 1956

Weaver, B.D.: Inveptigation of Recovery of Magnetite, Apatite and Pyrochlore from Ore of No. 6 Orebody of the Nemegos Property at the Department of Mines and Technical Surveys, Ottavra, Ontario November 15, 1956.

10. Allis-Chalmera: Magnetite-Apatite Deposits, Nemegos, Ont. April 24, 1959.

Weaver, B.D.: Summary of Mineral Dressing Tests, Multi-Minerals Ltd.January 25, I960.

.Lxf^N ( 12. ) X~Ray Assay Laboratories Ltd.: Preliminary Report, Recovery of Rare^— Earths, Thorium and Yttrium, from Apatite Flotation Concentrate,

February 9,

MILLING RESEARCH

I, M, C and 13.) Allis-Chaibners Mfg. Co.: Beneficiation of Apatite from the NemegosIron Body, 4uly 1959.

14. Comments Concerning the Fetio Process

15 y I. M. C, : Beneficiation of Nemogos Apatite -Magnetite Ore Composite FP-15, October 26, I960. (3^4 orebody)

S ~ f i

esear'ch Laboratories

Subject: The Concentration of a Magnetite-Apatite Ore

______' by Magnetic Methods for the Nemegos Uranium :

Corporation, Buffalo, New York, and the , JV

Identification of the titanium-Bearing ' ' *

r-' '-''- Minerals in the Ore ' -- ; -'' : -. ' :;:~ : : ^

December 30 . 1952 Investigation Nfl. l'fi8R'lp-.27qsO

- ...-''"x - : '/i' V' .* .--- ': r.-'-'-':.-'- ; *v."-vv' •'••"-.•'••.yi.'"-^ .. . -,... ; . -, : ,. - -- -.'-* -' -:- . -- . .-.-; ; -v^-r^c;.. ' .-. v ^

MAIM OFflCt ' BOX 51? . MILWAUKEE I. WIS,

I A!-:OUATGKI'.S

December 30, 1952

Mr. G. V. Woody, Manager Processing Machinery Department

Attention: Mr. C. A. Rowland

Dear Mr. Woody: '

The attached report, No. 1688-P-2765C, describes additional tests made to identify the titanium bearing minerals in a magnetite- apatite ore for the Nemegos Uranium Corporation, Buffalo, New York, and to up-grade the concentrate previously obtained. Previous work was I'eported under investigation number 1585-P-2765.

Microscope examination showed that ilmenite was present in the ore in a negligible quantity. Analyses by X-ray diffraction suggested the presence of either ilmenite or an ironous metatitanite. The indications were weak, however, and it is believed that these observations confirm the conclusion of the previous report, that practically all of the titanium in the ore is in the form of titaniferou magnetite.

As an attempt to lower the phosphorus content in the concentra from the previous investigation, additional magnetic separations were made. The concentrate was not reground because most of the apatite in it was observed to be in the form of free grains. The lowest phosphorus content was obtained with a Stearns dry, alternating current magnetic separation. A reduction from 0.46 to 0.17 percent was obtained

The work was done on charge number 1-0792-05881.

Very truly yours,

CLS:esmAttachmentCC: Mr. F. C, Bond

C. L. Sollenberger Engineer-in-Charge Process Laboratory

December 30, 1952

LABORATORY INVESTIGATION No. 1688-P-2765C.

Requested by:

Subject:

Mr, T. MidgleyMilling and Mining Machinery SectionProcessing Machinery Department

The Concentration of a Magnetite-Apatite Ore by Magnetic Methods for the Nemegos Uranium Corporation, Buffalo, New York, and the Identification of the Titanium-bearing Minerals in the Ore

INTRODUCTION

This investigation is supplementary to Laboratory Investigation No. 1585-1 P-2765, conducted in May, 1952, for the subject corporation. The purposj of this supplementary investigation was twofold. First, it was desired that further efforts be made to identify the titanium-bearing minerals in the ore, thus confirming or supplementing the conclusions reached in the initial investigation. Second, it was desired that the phosphorus content of the magnetic concentrate from the previous investigation be reduced to 0.05 percent or less by means of further magnetic separation.)

Samples of the ore were examined with the aid of microscopes, by X-ray diffraction, and by spectrograph. Concurrently, the magnetic concentral derived from the previous investigation was submitted to further tests ir. the laboratories of both Stearns Magnetic Inc., and Dings Magnetic Separator Company. For this supplementary investigation approximately 25 pounds of the original ore and approximately 200 pounds of magnetic concentrate from the previous investigation were used.

INVESTIGATION

The ore contained 46.4 percent iron, 5.4 percent titania, and 5 percent phosphorus. For clarity of presentation the magnetic concentrate from the previous investigation will be called "rougher concentrate" . The rougher concentrate was all minus 48 mesh. Chemical analysis showed that it contained 62.7 percent iron, 0.46 percent phosphorus, and 7.4 percent titania.

M in eralogi c al Exami nat ion

Equipment used for the mineralogical examination consisted of a binocull microscope, a Buehler die-casting apparatus for making Lucite mounts,

metallographic and petrographic microscopes. Criteria used for identifica t ion of minerals were hardness, tropism, color, and chemical reaction, to etching reagents.

A small piece of the dark colored, opaque fraction of the ore was mounted in a Lucite block, highly polished, then studied under the metallographic microscope. Magnetite was found to be present in the form of anhedral an' euhedral grains. Pyrrhotite was present not only along all of the grain boundaries of the magnetite but apparently within many of the magnetite grains as well. Crystallographic control of the deposition of pyrrhotite in the magnetite was indicated. On this polished surface of approximately 5/16 square inches, only three blebs of ilmenite were found. The largest of these blebs occurred at the boundaries of magnetite grains and a pyrrhotite grain and was approximately 100 microns in largest dimension, The other two ilmenite blebs occurred within magnetite grains and were 'about 50 microns in largest dimension. The area of the ilmenite amounted to approximately 0.005 percent of the total polished mineral surface.

Based on the minerals present and the manner in which they occur, the order of deposition (paragenesis) of the ore minerals appears to be as follows: First, a homogeneous solid solution of titaniferous magnetite formed with incipient crystallization, of ilmenite, followed by crystallization of pyrrhotite, and then apatite. Magnetite may contain up to about 7.5 percent titania within its crystal lattice. The rougher con- l centrate contained 7.4 percent titania all of which could be in the form l of titaniferous magnetite. A homogeneous solid solution of ilmenite and l magnetite will unmix rapidly as a eutectoid if cooled slowly. The l presence of only a few ilmenite blebs indicates that this unmixing was l only incipient. Apparently the origin of this ore was a basaltic flow l that emplaced at a high temperature, then cooled rapidly. This view l is substantiated by the abundant presence of pyrrhotite, a mineral which l is generally considered to form only at high temperatures (above 500 l degrees Centigrade). l

Microscope examinations of the rougher concentrate and magnetic cqncen- ltrates from separations by both Ball Norton and 3-Pole wet drum magnetic lseparators, described later in this report, revealed the presence of lboth free and locked apatite particles. In all cases, the greater per- lcentage of these particles were free. Consequently the rougher con- lcentrate was not subjected to additional grinding prior to magnetic lseparation. These grains were usually small, of irregular shape, lapproximately 40 microns in largest dimension. A few larger grains, lapproximately 50 microns by 150 microns, were evident. l

Examination by X-Ray Diffraction l

Four samples from the rougher concentrate were studied by X-ray diffrac- l tion. Of these samples, three were non-magnetic fractions from an l

- 2 -

alternating current magnetic separation made by Stearns Magnetic Inc., described later in this report. The fourth was the final magnetic con- cexntrate from this three pass separation.

The non-magnetic sample from the first pasi; sho\ved the presence of a titanium-bearing mixiera.l in the form of an. ironous metatitanite (FeO TiOo) The non-magnetic samples; from the second and third passes gave an indication of the presence of ilmenite (FeO * Ti02). Indications of potassium titanite (K2TiOs), and an ironous metatitanite were shown in the magnetic concentrate derived from the above-mentioned separation. The intensities of all of the readings were weak or very weak.

Spectrpgraphic Analysis

The same four samples submitted for X-ray diffraction patterns were analyzed spectrographically. No unusual elements in significant quantities were detected,

Magnetle Separation

Ball-Norton Separator; An attempt to upgrade the rougher concentrate was made oh a laboratory model Ball-Norton dry, pickup belt type magnetic separator, Th?3 machine was supplied with 230 volts a.c., and the pole distance was set at one inch. Ten pounds of the rougher concentrate were given one pass through the separator. Results of this test are shown in Table I, They show that a large percentage of the titania remained with the magnetic concentrate and that the phosphorus content was reduced! to 0,39 percent.

Three Pole Wet Drum Separator; Another test was made on the rougher con-l centrat e us ing a labor at ory model 3-pole wet drum magnetic separator. Th machine was supplied with direct current of 115 volts at 3-1/2 amps. Fifty pounds of the rougher concentrate were given two passes through this separator. Results of the test are shown in Table II. Again most oi the titania remained in the magnetic concentrate. The phosphorus content of the concentrate was reduced to 0.32 percent.

Stearns Type "AM"Separator; A third test on the rougher concentrate was made us ing a St earns labor at ory model Type "AM" magnetic separator, an alternating current magnetic separator. The rougher concentrate was given three passes over this machine. The results obtained are shown in Table III. They show that most of the titania remained in the magnet! concentrate and that the phosphorus content was reduced to 0.17 percent.

From the results of the above tests it appears that it is not possible t* reduce the phosphorus content of the concentrate below 0.17 percent by the use of magnetic separators.

- 3 -

C h em i c aland M ineralog i c al R elat ions hips

The chemical analyses of the products from the magnetic separations are listed on Table IV for comparison. They show that as a better separation of the magnetics from the non-magnetics was achieved, the percentage of the iron and the titania in the magnetic concentrate increased and the percentage of the phosphorus in the magnetic concentrate decreased. This indicates that little ilmenite was separated from the magnetic concentrate.

Iron titania ratios are also shown on Table IV for both concentrates and tailings from the separations. This ratio for ilmenite is approximately 0.7, This ratio in the tailing in most cases was greater than that in the concentrate and much greater than 0.7. In the tailing from the Stearns "AM" separator, the ratio was about the same as in the concentrate. These high iron-titania ratios in the tailings may indicate the presence of iron bearing nun magnetic minerals. However, the ratio for the Stearns "AM" separator tailing suggests that most of the titania in the tailing is in the form of entrapped titaniferous magnetite.

SUMMARY AND CONCLUSIONS

In the ore, only negligible quantities of ilmenite were detected under the microscope. To obtain a satisfactory X-ray diffraction pattern, approxi mately five percent or more of the compound in question should be present. X-ray diffraction patterns of the final concentration products suggested the presence of either ilmenite or an ironous metatitanite; however,

^all of the lines necessary to positively identify either of these materials j-were not present in the patterns. Pyrrhotite was found not only along most of the magnetite grain boundaries but in the magnetite grains themselves. The presence of the pyrrhotite and the scarcity of the ilmenite suggests that the basaltic emplacement of this ore cooled so rapidly that little unmixing of the ilmenite could occur from the homogeneous solid solution. The titanium content of the ore is much greater than that which can be attributed to ilmenite and is probably derived principally from a solid solution of titaniferous magnetite.

From the results of tests conducted, it appears that it is not possible to reduce the phosphorus content of the concentrate below 0.17 percent by magnetic separation.

D*^.^Mineralogist

Approved:

K. IHRIGl f;u r y"K~r~nTrTg"7 "' V Tc^TIFFe sTdeTTf IP. Charge of Research

TABLES

Mi.J,li-

Table I

BALL-NORTON MAGNETIC SEPARATION

Feed

MagneticConcentrate

Non-MagneticConcentrate

Total

Feed

Final MagneticConcentrate

Tailing1st Pass

Tailing2nd Pass

Total

WeightPercent

98.7

1,3

100.0

Weight Percent

97.7

1.8

0.5

100.0

FePercent

62.7

62.8

4.7

62.1*

WET DRUM

Fe Percent

62.7

63.5

28.3

21.7

62.6*

Dist .Percent

99.1

0.1

100.0

Table I

MAGNETIC

Dist , Percent

-

99.0

0.8

0.2

100.0

PPercent

0.46

0.39

4.7

0.44*

I

SEPARATION

PPercent

0.46

0.25

3.4

3.8

0.32*

Dist.Percent

86.3

13.7

100.0

Dist. Percent

75.3

18.8

5.9

100.0

Ti02Percent

7.4

7.4

0.13

7.3*

^2 Percent

7.4

7.4

2.7

1.9

7.3*

Dist. 1Percent

99.9

<Q.l

100.0

.

Dist .1 PercerJ

- 99.2•j'1loo. d

^Calculated Head

Table III

STEARNS TYPE "AM" MAGNETIC SEPARATION

Feed

Final MagneticConcentrate

Tailing #1 Tailing #2 Tailing #3

Total

Combined Tailing** 1.7

WeightTJ** Y* r* p fi "t"

98.3 1.2 0.3 0.2

100.0

** 1.7

Fe Percent

62.8

64.6 11.7 46.7 47.5

63.9*i22.0

Dist . Percent

99.5 0.2 0.2 0.1

100.0

0.5

P Percent

0.47

0.17 4.3 2.03 2.03

0.23*

3.6**

Dist. Percent

73.0 22.5 2.7 1.8

100.0

27.0

Ti02 Percent

8.2

7.7 0.5 5.7 5.7

7.6*

2.03**

Dist. Percen

i

99.5 0.1 0.2 0.2

100.0

0.5

* Calculated Head ** Calculated

Original Ore

Table IV

CHEMICAL AND MINERALOGICAL RELATIONSHIPS

Fe P Tio2 Fe:Ti02 Ratio

46.4 5.0 5.4 8.6:1Combined

Cone. Tails .Cone. Tails Cone. Tails Cone. Tailings

Rougher Concentrate

Ball-Norton Wet Drum Stearns Type "AM"

62.7 62.8 63.5 64.6

24 26 22

.0

.7

.9*

.0*

0.46 0.39 0.25 0.17

16.4 4.7 3.5* 3.6*

-'7.4 7.4 7.4 7.7

0 0 2 2

.09

.13

.5*

.03*

8.48: 8.49: 8.58: 8.39:

1 1 1 1

22.2:1 36.2:1 11.4:1 8.33:1

*Combined tilling analysis

CANADADEPARTMENT OF MINES AND TECHNICAL SURVEYS

MINES BRANCH

OTTAWA

Research Report No. MD181 .

of the . - '. ; - :Sv;

Mineral Dressing and Process Metallurgy Division

A CHEMICAL METHOD FOR PRODUCING NIOBIUM CONCENTRATESFROM ORE FROM THE NEMEGOS (ONTARIO) PROPERTY OF

MULTI-MINERALS LIMITED, TORONTO, ONTARIO.

By

G. Thomas

June 30, 1955

(Copy No,

f"'

;]

l

Contents

Pae

, , . .Khipmentj Purpose of Investigation , .

Summary . , . . . . . . . . , . . . . . , . l

Mineralogy of Multi-Minerals Ore . . . . . . . . , . 2

Magnetic Concentration . , , , . . , . , , . , . 3

Procedure for Chemical Concentration of Niobium . . , , 4

Hydrolysis of Niobium in Relation to Acid Strength . . . . 4

Effect of Amount of Decomposition Acid, Leaching Temperature and Leach Acid Concentration on Niobium Extraction ,. ,, ,. ,. ,. ,. ,. 5

Recovery of Niobium Using 3M H ?SOj for Leaching .. . , 7

Recycling of Leach Liqiior ,. ,. .. .. . . ,. 8

Sulphuric Acid Requirement for Decomposition .. .. 9

Le?chirig Niobium Concentrates with Dilute Acid ,. t. .10

•I'obium Recovery from Centrifuged Liquors . . .. .. 12

Conclusions ,. ,. ,. ., .... .. ** 14

t

CANADA

DEPARTMENT Mines Branch OF

MINES AMD TECHNICAL SURVEYS

552 Booth Street, Ottawa, Ontario. June 30, 1955,

Research Report No, MD181,

A CHEMICAL, METHOD FOR PRODUCING NIOBIUM CONCENTRATES FROM ORE FROM THE NEMEGOS (ONTARIO) PROPERTY OF

MULTI-MINERALS LIMITED, TORONTO, ONTARIO.

f By

G. Thomas*

Shipment; Purpose of Investigation;

A sample of niobium ore from Multi~Minerals Limited was

received at the Mines Branch on August 15* 1954, To date, physical

methods of concentrating the niobium in this ore have been unsuccess

ful, Therefore an investigation of a chemical method for concentrating

the niobixim was made. The aim was to produce a concentrate contain-

ir- at least

SiYmmary:

By magnetic separation of magnetite, Multi-Minerals ore

a.'; s ay ing l.^oNb^Oe was upgraded to l . W/o Nb JZ) ^. H eating the up -

VU:KcHrch Metallurgist, Extractive Metallurgy Section, Mineral Dres sing and Proccaa Metallurgy Division, Minea Brt'tnch, Department ofM i. r i f '.'.; and Technical Surveys.

~ 2 ~

graded material v/ith concentrated H^SO/ to 250*C decomposed the py

rochlore, which v/ao leached v/ith sulphuric acid solutions. By heating

the leach liquors, to effect hydrolysis, high-grade niobium concentrates

were precipitated, V/ith 3M H^SO/ for leaching, 87 0 of the niobium

was extracted and the hydrolysis precipitate assayed 81^o Nb^Og. The

cost of the acid was 6Q 07o of the value of the niobium in the initial up

graded material when 3M H^SO^ was .used for leaching. The use of

more dilute leaching acid lov/ered the acid cost but at a sacrifice of ex

traction efficiency and grade of concentrate, Any preliminary physical

method of further upgrading the low-grade (l.SfoNb-Oc) o re would

improve the economics of the chemical method of producing high-grade

niobium concentrates.

Mineralogy of Multi - Miner als Or e;

The mineralogical description of Multi-Minerals ore is

given in a letter dated Axigust 15, 1954, from W. Hutchings of this Div~

i r ion to Mr. Rogers of Multi-Minerals Limited, and in Interim M. D.

Test R.eport No. 710--ML, dated January 28, 1955. In summary, these

references? state that this Multi-Minerals ore consists largely of pyrox

ene, nepheline, and magnetite. Other minerals present in smaller

amounts include feldspar, calcite, biotite, pyrrhotite, ilmenite, and

pyrochlore. The pyrochlore is present chiefly in coarse nepheline

~ 3 ~

Magnetic Concentration:

A 1000-grri sample of Multi~Minerals ore containing l, l 8^0

Nb-,Or was pulverized and passed through a Crockett machine and a

Davis tube to remove magnetic material.. The results of this separa

tion are shown in Table I,

TABLE I.

Magnetic Concentration of Ore.

ChargeCrockett magnetic concentrateDavis tube magnetic concentrateNon-magnetic tailingsLoss in slimes

Weight (gm)

1000415

2051649*

Nb 205 , (7o)

1.180.260.661.802. 65*

Nb2O 5 Cfr dist")

1009.21.1

78.71 1 . 0*

Calculated values.

The non-magnetic tailings, containing approximately 80^ of

the Nb-,O(- originally present in the ore, were used for subsequent chem

ical concentration tests. Although no attempt was made to recover the

slimes, these finely divided particles were relatively rich in niobium,

A screen test on the non-magnetic tailings also showed that niobium was

concentrated in the finer particles; 27ô of the tailings was in the minus

150 plus 325 mesh fraction assaying 1. 13fo NbÔ^ while the remaining

ly/o of the tailings was minus 325 mesh and assayed l. 94ô Nb-Cv.

-4 -

^ Chemical Concentration of Niobium:

5, 0~gm samples of Multi-Minerals non-magnetic tailings

were mixed with concentrated H-,SO4 and heated in covered crucibles

for 2 hours at 250 0 C to decompose pyrochlore. The sampler, were then

cooled and treated with, dilute HSO^ to leach the niobium. A filter or

centrifuge was used to separate niobium-bearing liquor from residual

solids. Dilution and boiling of the liquor caused the hydrolysis and pre

cipitation of hydrated niobium pentoxide which was recovered by filtra~

tion. Drying the precipitate at 600 0C yielded the IW^Oc; concentrate.

Hydrolysis of Niobium in Relation to Acid Strength;

Five 1.00-gm samples of Nb ? Oe obtained from Fansteel

Metallurgical Corporation were dissolved in hot concentrated HpSO^

and carefully added to various amounts of water to give niobium-bearing

sulphuric acid solutions of varying strength. vThe solutions were boiled

for 2 hours to hydrolyze and precipitate the niobium, which was filtered,

dried, and weighed. Results of these tests are given in Table II.

TABLE II.

•Hydrolysis of Niobium in Relation to Acid Strength.

H 2SO4 (molarity)Weight of Nb^Og precipitate (gm)"lo hydrolysis

0.251.00

100

0.51.00

100

1.00.93

93

2.00.82

82

3.00.0

0

Table: II shows that .strom: acid prevents hydrolysis of nio

bium, while dilute acini permits complete hydrolysis and recovery of

Jf.

- 5 -

Nl)2^5 from niobium-bearing liquor.

The data shown in Table II. are of importance during various

stages in the chemical concentration of niobium from ore. In the initial

decomposition of pyrochlore in the ore with hot concentrated Hp^

sufficient acid must be present to keep the ore in a moist condition suit

able for subsequent leaching of niobium. The considerable heat of dilu

tion which i s evolved when ore containing this concentrated K ySOA i s

added to aqueous leach solutions, may hydrolyze the niobium and there

by prevent its extraction. Table U. shows that with leach acids of con

centration. less than 3M PI 280,4, the decomposed ore must be added grad

ually and with vigorous stirring to minimize premature hydrolysis,

However, after the separation of leach liquor from ore, hydrolysis is

desirable to recover niobium from the leach liquor. Table II shows

that, for the hydrolysis stage of the process, dilute acid is essential.

Effect of Amount of Decomposition Acid, Leaching Temperature and Leach .Acid Concentration on Niobium Extraction:

5. 00-gm samples of Multi -Minerals non-magnetic tailings

assaying 1. 80^o Nb^Or were heeited for 2 hours at 250 "C with various

amounts of concentrated H-,SO4 . The decomposed ore was added to 15

ml of 3M or 9M H 2SQ4 for leaching at 100 0 C or at 25"C. The sam

ples were filtered through sintered glass crucibles, washed with 50 ml

of 3M or 9M H^SO/j and the ' 'rates analysed for niobium. Results of

these f.osJ;; arc given in Table MI.

TABLE III.

Table III shows that, in general, either an increased amount

of concentrated IIoSO^ for decomposition or a higher temperature for

leaching increased the extraction of niobium, particularly when 3M

was used for leaching. Niobium extractions of well over 90*5^

were possible with 9M H 2SQ4 for leaching, while up to TOfo niobium

extraction was obtained by leaching with 3M H 2SO4. Hydrolysis of

diluted filtrates from tests 7 to 12 inclusive gave, after filtering and

drying, a high grade concentrate containing 85*^ Nb^C^.

With Nb 2O 5 at $2 <, 80/lb and concentrated H 2SO4 at .^25/

ton, the cost of 9M H 2SO4 for leaching was approximately 3 times the

value, of the niobium in the low grade sample. For economical opera~

l

WEffect of Several Variables on Niobium Extraction.

,TestNo.

123456

789

101112

H 2SO4 forDecomposition

(ml)

2. 02.03. 03.04.04.0

2. 02.03.03. 04.04.0

H 2SO/! forLeaching(molarity)

9MitM

M

tl

1!

3MHM

11

II

tl

LeachingTemperature

ra100

25100

25100

25

10025

10025

10025

lv—, ———— —— ——— - —— .--T-.,".i~.--r,- ^ .

Nb 2O 5Extraction

(7o)

92959480 |98 j93

59476858 j71 171

---

i •ti fe.

•*********3'W*^*^^

- 7 -

tion, leach liquor would have to be recycled several times for further

leaching prior to dilution and hydrolysis for the recovery of Nb-,Oc.

Recovery of Niobium Using 3M H pSO^ for Leachirig;

By leaching with 3M in place of 9 M H^SCXj, niobium extrac

tion v/as less efficient but acid cost was only one third as great. Fur

ther tests were therefore made to recover niobium, using small amounts

of the less costly 3M H^SO^ for leaching. Several 5. 00-gm samplesof

Multi-Minerals non-magnetic, tailings were decomposed with con

centrated H^SO^. at 250"C and placed in electrically heated sintered

glass crucibles with 3M HgSO^. The slurry v/as heated to near boiling

temperature, filtered, and washed several times with various amounts

of fresh acid. Filtrates v/ere analysed and, after dilution, were hydro-

lyzed for recovery of niobium. Results of these" tests are given in Table

IV. This table also shows the cost of the H'-,SO^ used in treating the

samples as a percentage of the value of the niobium in the samples,

TABLE IV. . .

Recovery of Niobium Using 3M PI fiQ^ for Leaching.

TestNo.

131415

1617j a

Cone. H 2SO4for Decomposition

(ml)

3.0tt

M

4.0it"

3M H 2SO4for Leaching

(ml)

183654

183654

Nb20 5Extraction

(ft)

748786

938787

Cost of Acid("Jo of value ofNb in sample)

55 )82 )

109 ))

64 )91 )

119 )

Plydrolysis ppteNb205

ft

81

Recoveryft

94

.-•y.,'v

~ 8 -

4fc Table IV shows that the leaching of decomposed ore with 3M

HpSO/f near its boiling point gave an 87^o extraction of niobium. Further,

f;mall amounts of concentrated H 3804 for decomposition and 3M H^SO^

fo? leaching appear .to be as satisfactory as large amounts of acid.

With small amounts of acid, an 8?7o extraction of niobium from the sam

ple was obtained, with the acid cost being approximately 60^0 of the val

ue of the niobium in the sample.

The dried precipitate obtained from hydrolysis of the com

bined filtrates from tests l 3 to 18 analysed 81^o Nb2O5\vith a recovery,

by hydrolysis, of 94c;o. Such a high-grade concentrate would be readily

marketable.

Recycling of Leach .Liquor;

Attempts to recycle filtered leach'liquor for further leach

ing, to red vi c e acid consumption, were unsuccessful. In one

test, a sample of decomposed ore was leached with 35 ml 3M HjjSC^

near the boiling point. The filtrate was then used to leach another sam

ple of decomposed ore. This filtrate, however, on cooling, solidified

completely due to crystallization of leached aluminium sulphate. In a

second test, when filtrate was recycled, filtering was extremely diffi~

cult due likely to aluminium sulphate crystallizing and clogging the

oores of the filter.

t

~ 9 -

fSulphuric Acid Requirement for Decomposition;

To find the minimum amount of concentrated sulphuric acid

required for decomposition, 5.00-grn samples of Multi-Minerals non

magnetic tailings were mixed with varioua amounts of concentrated

H 2.804 and heated to 250 0 C. The samples were leached inheated cruci

bles with 5 ml 3M H 2SO4 , added slowly to 50 ml 0. 1M H2SO4 ' and fil

tered. Dilute leaching acid was used here to lower acid consumption.

Results of these tests are given in Table V,

TABLE V.

Sulphuric Acid Requirement for Decomposition.

TestNo.

19202122

1-13804 for Decomposition

(ml)

0.51.02.03.0

3M H 2S04 for Leaching

(ml)

5.05.05.05.0

0. 1M H2SO4 forLeaching and Washing

(ml)

. 50itHti

Nb2Os Extraction

(7o)

05

2979

Table V shows clearly that, in these experiments, unless

the ore was decomposed with concentrated sulphuric acid, niobium

could not be leached. With 3 ml concentrated H^SO,^ for decomposition, a

niobium extraction of nearly 80 0 was obtained. For the 80^o extraction,

the cost of the acid used for decomposition, leaching and washing was

40^/3 of the value of the niobium in the ore, Ifr these experiments, the

f i lie-ring of slurries was extremely slow.

~ 10 -

ing Niobium Concentrates with Dilute Acid;

To l o wes acid consumption, niobium was extracted from

5. 00~gm s ample 3 - ei Multi-Minerals non-magnetic tailings, using var~

ioxu; small amounts of concentrated H-,SO^ for decomposition and 75 ml

cold dilute acid1 (0. l to 0. 8M H^SO^) for leaching. In place of filtering,

which was extremely slow when dilxite acidwasused for leaching, liquor

was separated from solids by centrifuging. The liquors were analysed

for niobium content with results as shown in Table VI.

TABLE VI. Leaching of Niobium Concentrates with Dilute Acid.

f

Test No.

23242526

27282930

31323334

H 2804 forDecomposition

(ml)

1.52.02. 53.0

1.52.02.53.0

1.52.02.53.0

H 2S04 Leaching {molarity)

0.1Mt;itIt

0.4MttttM

0.8Mittttt

Nb 20 5 Extraction

Cto32446545

41595757

44636161

Cost of Acid {fo of value of Nb in sample)

17222731

29333843

44485358

'Table VI shov/s that the extraction of niobium fell off sharply

when less than 2 ml concentrated H^SO/j. was used to decompose the 5-gm

.samples of ore and that the use of more: than this amount of acid did not

improve: the extraction,, l, e rt ching with 0.iMH-,SO/. gave: a considerably

l

- 11 -

less efficient extraction of niobium than did leaching with the stronger

acids. The use of O.-lMH^SO^ *n place of 0. 8M I-^SO^. permitted a

lower acid consumption with but slight decrease in extraction efficiency.

In another series of tests designed to reduce acid consump

tion, leach liquor was recycled. The first sample of decomposed ore

was leached with 75 ml dilute acid, centrifuged, and washed with 20 ml

dilute acid. The liquor from this test was used for leaching a second

sample of decomposed ore which was then washed with 20 ml fresh dil

ute acid. This process was repeated with results as shown in Table VII.

TABLE VII.

Leaching of Niobium Ore with Recycled Liquor,

Test No.

35363738

39404142

H ?SO4 for Decompo

sition (ml)

2.5itM

M

2.5ttitti

Liquor forLeaching

75 ml 0.4MH 2SO4Test #35 liquor

" #36 "ti #37 tt

75 ml 0. 8M H2SO4Test #39 liquor

" #40 "H #41 M

H 2S04 *or Washing

20 ml 0.4MH2SO4II H II

II It li

II II tt

20 ml 0. 8MH2SO4ii it iiH it iiit ii ii

Nb 205 Extraction

W

5960 .6059

61- 61

6361

Cost of Acid (^o value' of Nb in s ample)

39322928

58433836

Table VII shows that the recycling of leach liquor did not

alter extraction efficiency and did permit a reduction "in acid consump

tion, By recycling dilute acid leach liquor, a niobium extraction of about

~ l?. -

60r7o wj^^obtained, with the acid cost being I CBB than 30^o of the value of

Ihe niobium in the sample treJited.

Niobium Recovery from Centrifuged Liquors;

When dilute acid was used to leach ore, centrifuging was

required to separate leach liquor from solid residues. The leach liqu

ors from these tests were boiled for l'to 3 hours to hydrolyze the nio

bium, v/hi eh was filtered off. The hydrolyzed liquor filtered readily.

Where the hydrolysis time was only l hour, the filtrate was collected

and boiled for a further period of 2 hours to yield a s econd hydrolysis

precipitate of niobium oxide. This procedure, was adopted to determine

any change with time in the character of the hydrolysis precipitate.

The precipitates were dried at 600 0 C, weighed, and analysed for Nb2O5

content. From previous analysis of the liquors, the percentage recov

ery of niobium by hydrolysis was calculated, x Results of these tests are

given in Table VIII.

TABLE VIII.

Niobium Recovery from Centrifuged Liquors.

Liquor, Test No.

23 to 3031 to 3435 to 3839 to 42

1 st ppteNb20 5Content

(ft)

17. 518.09.7

12. 7

Nb 2O 5 Recovery

(ft)

85647499

2nd ppteNb 20 5 Content

(ft)

3212.5

—

Nb 20 5 Recovery

(ft)

1920

—

t

j -13-

Table VIII .shows that; the hydrolysis of niobium is a rather

slow process, since less than 75 07o of the niobium was hyclrolysed when

liquor was boiled for a period of l hour. Hencefor complete hydrolysis,

a prolonged boiling period i s r equired. The time could be shortened,

however, by hydrolyzing the liquor in a pressure vessel at elevated

temperatures. Table VIII also shows; that the initial hydrolysis precipi

tate has a lower Nb ?Of- content than that formed at a later stage of hy

drolysis. Possibly, by careful control of dilution, temperature and

time during step-wise hydrolysis, impurities may be separated from

leach liquors and high-grade niobium concentrates produced.

In previous tests where 3M or 9M H^SO^. was usedfor leach

ing, the leach liquors could be filtered and gave high-grade hydrolysis

precipitates having an Nb^Og content of over BOfo. Table VIII showsf

that when dilute acid (O. l to 0. 8M) was used for leaching, the centri-\

fuged liquors on hydrolysis gave intermediate-grade precipitates con

taining 10 to SE'J'o Nb-Or. These intermediate-grade precipitates werel* O

highly contaminated with silica, e. g. that from the combined liquors of

tests 23 to 30 contained 51^o SiO 5 . While not investigated, it is reason-ft

able to expect that by leaching these intermediate-grade precipitates

with sulphuric acid, followed by filtration and hydrolysis, the silica

could be separated and high-grade niobium concentrates obtained. The

cost of treating the intermediate-grade niobhim concentrates would be

low in relation to the value of the contained niobium.

~ H -

tConclusions:

Commercial grade Nb,O r concentrates were produced fromCi -J

low grade (I. 8^'o Nb O t-) Multi-Minerals concentrates by the proceduresM J

outlined above. A higher-grade feed material would be required for the

chemical process to be economically feasible.

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&SCRimOM OF TH5 iS

-"•".vi: - '-: '&Q or* in tb© toet-shipciorru -waa va3*f. sdnHar .in grada ami

to' thai O.T skill~coro ,xrom. Jbttd orebody, aral isay. fc© consider! ref

lows?,'as 'iftdicaisd fcj assays of pro.&ietis o* thÂvsrofali ail.1 t® st-rah. on ^y^S' ;^5!

IS tons ef it* th® reswdtdng 10 tons of ore I'rbsj th-3 sscorxi cas-los*^ swa "N^l'^-C^'.IS tons ef it* th® resajdtdng 10 tons of ore TSOSJ th-a'sscorxi CHS-loafis 2wa•'•'li;'*'"p . ••' -' - '" ' ' ' ' ' " " .. '. . ' ... . 't . . . . ^ . , ^ - - : '•;'," - ;\* 'i *." **" *. -. " . . ' "," -, ' '

9\~\v*tf^'rf*'r~' *^h J*1 G '^TîCi ^s* j * f* i Y*i*l"t 1^^ ^5?*5"*^ f*jfiyt j!tA*tT3!E.^^*T* i^Ci t 1^? i^C*2*lE*O*T 2^!iCtC Jt j(.Vl?T3

at Ottawa, so titit tho djndicnted f^yjide *sats lo'-êr than th.-tt actually ship3?c4 :" ^ : :v ;-.-":"-'•i '-. ; -'^" *',';-'- *-'

essestlaDj iho stase, so that the1 fallowing d-s^sriptioa .apjpSieo'to boiii* -J- '.'- ;;;-'*.':-- '' ' ' :' ^'•'••-'•^;- - • /" V ; . ,''''' '.- f/' -,.' •:...-'' ' •"'.\'- , -^•.•t^: . V H' . ' ' . :- - v' Sv^ r.'^;,-'";:-*5io -s&ipceat S3 .. received tias absost dawid of ndnas l*4tiî .astt^sial.--^^^

iaisily of Ituapo 2 to S indues ifl sacfcioTt^ vdth SCS^B jasap* 22

•' A fcw'luT^J* of donSiiy missive, ati^^tita' cat. 1^ lattX'^Cf^ .-r

o? aacheHi;^ xere Includetl in the lot* Init, ai^ri JJitja tbesro. IJsa .v"-':...-^:^ v* , *^ ^ ' - . ~ . *F . " ', :- . •.'

^.liiffh ^*ej**j cut V •ssfoiiwts'up "tr* ^-liidi nido o.? elsar ariatii-3 of tho :Bsx® ' ';;'?-:": "''./; s

;-;,4."?J..?i-:j,i?.-vJi &S- Uru;v in T-he orssi as a '/sxle*

•r:;it rv:: e*; if i c v:r^vi.t^ Ot ô of-t,

O i1 'i^^*J x'i-'Sv vJ.*-i'j.Ot;Ai^ ***y 4*^-'/* 'i'Ji'Io li.:*

.Coofc5 or 3.6 ctibiio jfotft pes* lo*^; ton,, in ,I^ ^j assaua /ii percent, .v-

a L\CJc dsnnl'ty of

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3

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es sssallj irragttiar grains in tho ps*o. Zfc

ns.sily,-idth the r^c^cagjistdc '.fraction, *cut i îna grinding is rec*jdred to s-a- ".:": V"'; /,-C

the sulphur-con'lant of the- asagastito. concentsato' to" ls'39 th&a 0*06 . per ^.^K;:'-^

a[yTit©;la 'f 01220 asS ini^^b^&s ^'^•::~^--''"'- ' --' ;? ; ' - ";; ; - -, •••' '"vvv-^ :-' r i ;--^' : v :cV.'-'V :-^'^-'- -^ ; ^±î::^ rrh otlt©0 Ihs aroount or tMs saitvoral' 1& iso Bîll' thafc'if ' : - v'; v-^V'"the" grains' of tsyrrh otlt©0 ; Ihs aroount or tMs saitvoral' 1& iso Bîll' thafc'if

no K®?vall^rgic2l''pai3ibla4* li reports in U;d Rcfi-5SRîet,itS; inaction f^^'T-^' . ..-'- '•"•'•'•'' . '' ' 1 ' r ' " ' ' '"*"

?^ 5.3 rs^fxri

13ie isK'sdiaUi purpojsa of t

- '- ' : ' . / : - --,

tho Mill^tâk fc&s to racovejr soêral tona^ y - -^M; ;;-î

oi' the isidn product??- Trou iho ora,* ia^niitt,® acd apatit©-? of gyadfta'.-'''.'"- :'.'-:.;'' '. . .

thai vcwld tAOî -Uj^'spaoiflcftticag o,C tho steel arsl 'feytilissor iJ

' af t-ar

lr-hwr, each 0.2^ aax,; ia ";'..;. to a.^'

sties oi' the OPS to vki-ytrlop a tcnfcati.'yQ ^lo^?jhaot fox' tho

o:' it* 'i'Us :i.r;clv;,?:î fj??.tp?xrl^-i Q^ ^T'pi-w of ^ rinding-

r,-.v.;U;rii3ti33 o i' th^ r^vp^tita cwa^^'tnr-^^ ,xll on r

?, third arjci i&vlnor ^.HO^ ox'

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ltcr.s-fciCTa t^sts ara'-n progress in the laboratoii.es of

i; OrllU^ GRfcsylo, ' and of .'..Elseoo Corporation, ^

the

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" so -i&Eitiried that prcduaio 'o^ea^si^-inin, ^^•-^'^^M^jtf^lJ

tirc^o Assays -ars catJ

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71 ..''•••71,600' 65-7 -'-Oi 1*0 : ,06S " 6*5 :-"^|

y.'v;,''. 4 Results

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CUTIJ;JE oy .TK:^^RK' . ;o:: ; ":' ; --^{ ; --x v--.^ --^^-F-Sîi

:- :,- •••".^Ôlît^^yîf...,:^.\' :\m^m^^m^^mi ^* ^ '^^^^^mmim:^-'^•.'•^"^•f"--\ ^^'^•^^^: vfr^^^-^^^^^.^,——. J.——— —it^^J J.^ — .. E ——^-ft^lS ^ * ^ 1 - — ^..-^..-..J .'..' ..ii . •- . i.- ' __L, ;'- ;": , ••'.^ .-"

. wagnetite-apatits ora dry-irAlled in aa Aextjfall mill appeared so catiofaotcsy '^; '/-- .^v.: ..-- -tf~:-'.; v-. .-' -.'' \ - " ; -.' V ' •\ ;'-. :V- v. "'-- ';"v. - : " --' ^V'-^-H ' ;i '- ' ;-: -/;^S;v '-: :-^-^-;^'--^^:'^''; '-^ ; ' ;*-7^^^: ': - that f* flowsheet wag plannsd accordingly, with a ifercy rod cdll subatttutsd :-!~.''?ty3?~.••'•s'*."'-".'. " ,'"'- ::- - •' :-- ! '--'. :r '•''•.••: : •••" "- : -' :,-:''::'--'l : ''-- . : ' . • v ' .'.- v-" ;^---' -.x '^"'vft';^0 o'er tho ;Aerofall because the latter was not available. -It bocaise,"WldoHt " v":: C'îl?

alnaast inssediately that all-dry- treatment '•was. net' practicable, -end ""was obaacbned -'V^;!*'''

in .favor bf a wot circuit,

ucre-9n,

Djry-adilin^ In a rod s\ill crs&ted a tiust pr^blsai at the ;aill discharge, :; ' V

fend iBagrwtdc- separators, and no sdaquate dust-collecting system was :",;; -.V.:," ^^ : *:' ' ' ' •• " '

to take cara of this, t Although, this particular dif Xiculty st tlio ..:' ; f';i^-l;

mJ.ll vjaa obviated in a later Usiin an Aerofall tail!/ the probable 'Capital and'-- A^

costa of the -installation thnt feould be ,.-j4^jired! iri^ full-scala - :-^*'^^5S

dr^-mD-liruj ynattrsctiva. .' -. '.' ::/ /.'. . : .: ;,, :: -' : :;'V^ ' '•''-••'.^..•y^^.

dr^-belt jwJr induced-roll 7ftigaetic's**par?itors ".-mre available "i-S^ ' : - '." '- ' - •'•"-^•- .v ' -••'•',."- ' ,- - -.:::V-; .-.;.."; -- ;-; v.-.:.;'^.v-",..'. . . :.-;.^^-'H

in oisss Inrs* onoyjrh for a adll-tast of the laagnitw!* of the' pro9ent''*un. v. ::."."-.^.^-Vrv-

sad-yato to tho -.-.•etherUl aoparator.^3 Cti Ibo, pear hovur.":.'."?.- ;.'.' '::: ---?;: l

AJ.l r^natite coacsntrltfirt.v^rs contanlnated by cpatitt* slirw and '.. ' "'^?^

ier ivot-Qrinuing arxi vaii-^nÛu concentration 03 vciO-d -;. ^-:--:-

the nondescript middling products from both th? roiôjv, am cleanor-stêa •v.'îfe' " ' ' ; ' " -' - ' . - -•: .-;-:-- "'.." ' : -î:^-3

of thft'dry circuits This -.--fould roquira r. vet-and-drj cirouit, in w hi eh on 2y '" !i '''^'^

r.ho môr jxjir-ticn or the aprxtit*, js/rh^^s crj*-nith of t ho oro, w*vld be routed •"V^

xxslusivoljr through the nll-dr? aootlon. Thi^ w^3 evids-t nfi-itr tinfjucco;*srul '

a'-te-ipts to recover cl-tf-ru-; ar.^netite ccncontratas on a Staarns cobber a' - -- . ; "'

•ot-horiil b*.'lt-33psiritor, end on high-intensity, induced-roll Dinyjs-and feolon "••••-'' -\--i"

.^r"-r*) to.rs. Chock n.-jiwys on the m^v^.-Uo conawntr-xte rwcovcxrsd rrow a prarlous Vv'.-

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era of tho first c;irlca^l iuillod to the s&ss rash ci" grind (25' ;ss:ih) -aya

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lai&a eoftsi.-' . 32.1 15 0 ^V ^'ablo tail* 1.73 .••.••.35.57

s c5.i?s?K.t. thai -was aibtrted for th* first earls&d tias aa follows,-.' .'•,. :. : ;r .-

o .'alaua -|-îch la S" x 12n âw crusver 'and - :-: "T-'.:' ':

JTe4 i'roa a 'Steel bin 01* 6-ioiJd capacity \da ' "' ^.

fosdssr ^ 472^ to a 3* ^ ^* KarcE? rod'cdll cas^dr^.. -. v, -- -

about 1600 Ibs. of.sst'^-W edcVS-ineh steel rods sivl turftlug at 2^ r*p.sw'' /"- ; :^f ,

Puf.p dorssity ua3' riiadotained at aboui 70 F^' cent, solids in the dill, ' ?-dll ,- -? -- ;.:

1ovt^tor? uao screosôd en a 30s 2t 66** I

rsturrad by gravity to tJio' :. ;' . '','. ' :" - -. . ' -- ' -' -, '. ..' ./. ; ;..-; -v.:.-^

to 2p -por eât, aoHds, ''vas ponced to a.

balto maxdng tit 2C6 .ft*

. in a 5~ft, fior^9 '. 'H&o jjuwpoS to.

table- aiere- It v/as daallaed ar,d ths? sli,T!3 s*Rt to tîstft* '.Th

iios^*strat'e VM*3 yetablscV and fe* eleaacrHJOJiêntsatd, about 2 pssy cent t : ;

tb^ scrSj .i&sayij'e A3^ ?® arwl So?,? ?^)^' and containing aJbooV 1,7 ;J*w oont of. v;/^

a apatit® oi* tho ore5 1^3 dioeaztiî. ," Cleafjs

rslc-plus-îl, thiskssned ?ind filtered* li'

" hs ore c.C th

Cf^^T-losd vr,-4 ?j suti!i that fc^ this nsthoc': of trc'fttn.ât of tV:e nbn-nKjpnijiie trailing ;':. ;

tha ^.rntlt-ti îv.'i;.e:t ;-:i;'v sôîiîiarn s.ft- yse-.-vtj'r;/ teas I'id.r* It was r?st until

.'.V.rlhor ,vU-.?.v" f1 ^' '.l-'.^'J-11^^ in aMKji: fri-vitivx',:! rs-v-Û-u th^ jn-jydtyda of the

i'.'-.-^. ?;!,5 ;j .or,1 tcuen to i:.;r:'i'av^ M.-,?J ^lc-^r.êt*, 'iîfc la;*.?1 j^railo of th^ WitXJsv

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I^TJC-UV-.' sr-nVini of tho foad ;;.nd th*s t&i-eulat Iry; lead of sztAtaia^ tte rood .

to thy i*od nlli h-i-i to brf i-vi&jefcd to alsfet XfSO Ibs* jx*r hour* Control of i*ss

y?:i* ?.t t?-;A o IVy^X *i?is vlifi'isralt, t,h*J r.\xl lo^. V-MS critical, a'xil SO&5 diJTfic-

\il*7 1^:1 found .in"lX7:Vrsi-i to K.;sfjp th* i'ôd 5*at3 In bftlîo^ with tho Kfign^tio

cs'pafti^yr 'IMs B.ccsunted, Ib;* scraa of ih^ discrepancies in the r sault K* Jn '

rat-* to ths Dopa^.tttr- ciarevdt avei.*3^^d 55^0

0*4 :to 0(,6 per cent phaDjôsftas,..-' iixc*pt for a short txdal' run to *

iitiona'Aor-'.rv?sdJJiings ell tho satigjmtit** fsxaa thd first

sssS. ihssa 3i2j.s*i anu rs^lssnsti in ona lot* TS^ss rr&gult^

sd?JU3 AO to ^ siiEsJi (35 * 45 pv cent tatnvs iiOO a? ah)

iv'nt to lib*sr?ite the roay.4uaX ag&tit© and jyym^tlto Jftroia th^ u

a,GS pan?- o^fst of ®p.ch of'phoyphcrua atja iwli-fear^ Ktfteient rashing In the ^.r

cloafii;^g-stegs vsja BS st. import suA? aa a 3.ai^;e i^r&poytloa ot tlie ohoisphorus '.mat

dus to iircltidsd apatite r^liKS* *h* Ksj0*.9tio sepîîtor. tias heaviiy ovsrload&d ;

si. trltsss^ aÂ v^* tfoiiftatrbfat^ waa riot r^sJvad p.r-ftj'eyiy on tht*

v/aich reason 'tfcs pbfespbcrus content ot ooss? lot,^ of tits redeaned

^ss as bi*î st* 0*12 p35r oîit* fhia was a i^dfianical problok that vssa nolvetly

in tr*sti:v:4 tlj* se*saad carload. Assays o* proT^srJy u*aîed cor.centratea fi

both csrloada t'saaâ listed in Table H&. 2., pagfc 8* . .. - , . . ' - " ,'

The sscfind carlc^d .of -sre ^*a obtained to oota^sr* iha jêrforiasJic® c-f

5* Asr^rall :ftlll B&t up ter^pci?cavil^ in th* llspa-rta&ftt of JSLêa in fJovcQbss*

X/'i'V "Îvh th;it tv.f the 3 7 *- 6* Jiai-xiy J-c-i "111 u'.iÂ to rrf-ll ths oro o* the rirslr

so.-v

for

t '*.-i, 1,'

.'i'vj i:;u.;;a fciiih.3 tht. vct-cj.rc^t uif j'cfvSvl slightly jii'-sn "fch&t US**! To^ ! '

i..i.iK;; -^ i'lr^;. crii?,lo*ii ir* t}*?, t rou.^.cAôncâirrvtion was pwz*foy:s*xi on' A

:o;,-!; !.'ci-l:^,i;;- ^âior 'ir^tvaxi si' on i'h?* BccV.t*, av.d ih-s Hornby seâs*±toy

sxjtU .i'?.??.* *:lr--.x;i.i.nii jX'&ccavyl rot-^hf/^^^ne^nir^ta ujjij'^ iho rcjprirsi islJtl zsaii^

o.C r, eertâiottfl circuit, *yid th* tiixTicbatlîJ o^ but^j oêratAon ofcvi^bed*

ro'-wiitt t-axl^.v* WAS classif lei in. 5ja Akin spis-aX dLassizlssr the

atvi itl

jui dxuKKs^d aa

ned to jrun a adHîsat 5,n vîich tha atiatdtsi

by flotutlcv although tha rosolt^ o* jsasXl-SKjal* testa In* ;-

M that this sd^ht bo sn offleisrit wethod of .sffectivy;

pa^ticulaiij ^sf^si lc-vr-gsîl^ ox*** Ttliia ia discussed

:- ;V' '.- Tha Gyogkîi JMJrv:entr?vt.o ^0 iiOAS- ' . . ' '

vs'deh ta^.e-aad *âs rsgstmTwi da a l\*tll' sdll

jarap to the H^??ho separator, to viiiah yako elasidfior ' ovwilow vai iteU

Koebo ?iddiilins, defasttsâd in sn Akia els33if3.oxy?*ft!i Ke^rtiupid Mth th®

sand in the h*a.l; mill and th-us ystMirjed to ih?* Boshs-fesdj tho overflow, ,thio?s^ :\.'

cneU ia'a.cond, trfas cJ.ss^'ed batîvdoe'ott tbo BoeJuâad the !

served ^r l^rtboy i*st-W3Sk on ths sôo-wyy of a

rôstr^^ in both Y&& ttlassaSler and apisral thiebsoay to coapweo the* eJ

es o* v-hdrje urdls^ and bath Uox^-cs* ttrw string -tllteyn v^-ô tostecl d

run* A rcvko classifies- teas found Ixj be sup-yricr ^ a s?ii'-sl iMcke^y Toz*

*n c;:.;.Vv.t.ica; •^-••.V;.sj cliâiilor t-.?:;d to tiss j;lll.or co^tf-JLiscd 25 v-' ' ' ' ' ' ;:vvl t;.;..hv.r ^ p- id ty 1^3 ,lv:-2 i'?3,^vi y.s^'iMJ.^'-,.!^-* x^vÛia O i.' thy ?i:plt.l fHrt^lxnfJ

r,.;.-.': -..C ;--.'-;n^..i-.';',j i'/ui i^rtd:; en iha r.îoi* ,s:'.o r-J;on ci" p. ;,pj.r.:.

The sr?-V3 ^hlok^ss o n both tbs Dowso a?wi'tha airing filter *#*s 3/4

V/SÛjeheSj at *.hic;h thie:cnc.':}g th3 c^to riko;2 tho slvrlr^ filter wi3

sliiiiiZs'' ^yiyr tfe'.ti that s^za t^sD iioiveoj but tho Dorroo i'ju^lod a

rsngs o? jsirtiel©-9ir.8 witliout losing cnke* ISvs etslss^, filter did rsot load

well .If th*J fOfcd ojrlaiaed loss than AT? p-er cent c T -SCO zaash raatorial, r4

tho Dor3?co''*saa'y56t:?i*]PBftted fey j&tsd as coasê as

of coacsîtjfatea 2.3. conaioersd xjireisy a sepurato heading*. ^ /^ :; ^''^:.'.^ : ';^--^/'

The

inca, 3 to 4~inches edniaasB, tJhile that" for thp it)3 rdll test- ccssprised'

rejnalnins ton toswi or 'so confeinir^ th® c3.o3n-xiji and diluted ty. vâsrto

lin grade of a?3j, partisuXarl^ a fd.^j?a* gang^ content in. tho roci islll.' .; !' . - - - - : " "'. ' ' '. - '

that' the Gsêkatt -tailinga in the' AeroJtaH (18) and. rod idll (19) toâ asssysd . --". ;

on 2D-êî, contained 19 P^r; cît* 'ivbilo tha-

totoitei 5^9 jjot greaVin view of 'tha tii&ersnce in top-aesh/ ''

T the êsro^ll product. 1^9 conslcl^rably coarser*

.282

use of the lover proportions of I^^KJ ond #angms ia tha Aerofall "' ;" !

t^ri~jv\5;rnotic tailing t,h-3 gratia o i^ tho tablo . product fttsi tl':o reeovejgr o* sp&tite ,.- : .~

v.n ljv vwr-o hl|;^cr than in tho HDtl rvill toat. :r.jo hijêr r ' '

lvrr.u'.!.7 ---'-i t;. e 2iiv.*nr t!^;^rt:.vn of oiiK3. ti.o hx~he

t;;/) ,u:a\;io:-J ,::o,:.L^:t; o^ t.?;o tîMo .I'o^J. :'-.nJ. JLii-.U^^rônfe t-^ tho by;7O o? •till,

;.^:-..:i-:-M.vi iv^. (rl i-iix-vB^- of ctpatito V t'îliry^ raua iliyiiUon'oJf the toll

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Fv:';:Ai-::.:l to .x; tv:o ;;,i::y at al! o* ii:tf thr-v-o TJfcua toatAv*i? the non-iagr.dt.io .

.•/;\v~l-.Loft3 shoved pro^ro^dv^ly pcoi*or liberation o C rpatita and-gwtgao vith irv*" '. : -

cîaL\-;; .dll-vaevxinu ^..;-5.11*3-3 iao ora v--.i* iVi;ililo 5 ?.rsi tJi© criilcil ^TiXin axs^ ; : . -;

dii'fioult. to rcair.i'uiia a wcrîaK-losd in the rrdll^ br rîr-Xiii .feeding, at 5*2 - ,: " -., .-.-•:': "

:Lii?;a3 'ysisuit't:* 'I!-^ lU'îoa.tod capatiivy at û ox'i-'i.'ust viion^sj c-f 5^2 incheft w^g*^ ' '" : ' : - "

v,';11,;} th^t case as is jpj^jâtly-J.*ua^t the 3*-aJ* Lcske pitjperty of Benson'12Ln5a (7)* .; ".^

Tho Ae*ofsm rdll had both ad^smtagaa and dltâdvajsta.^9* Aos^ys of v-v-- : ' : ;:' ' - '- - ..'; . -.-- ' - -...-.. -. v- -* .'•'.•' . ; -. -' ' --''•••.v!''*. •;''-"'-: .' " •••" '-'.^...V,';-

C-ixjcskott' ccQcenti'aisg .fco/a tho Acji&fsuLl protluct were alroivt" Identical' with tboso" - ; .'

from tha atsi Kp-l# and, Ifecause the- sw.inhcr-csone6*itrat*"sxtst. bo resdlled to a':: "- ,'^-.'-.i-^

rsgarclloss of the-taosh .at the txsjÂer-st-ago, neither type of ; C^H;^'

rilled o rt? inorovsd i^coyesy of apatite in tha tutilo predict* but thia r,diraintaK9 .": : ""-•...;- .. ; . --;--, ", -, . \ " .-. - ;-'y : - .. •":v.,--.. - - • r; ";''V! - ;^'-:v-^ft:^.:; : :-:-;.';;:-^v;V'•-.^:^^*wTtoulti contir&i® to apply o?ily if, au in thlo insbancso^ the ap&tita ©ot&ent of th^ " v ';.'

:*?ed verd M^h cnougji to ii^sare that the grada of- the, ..taKLe j:

the :,-. - .

iiis^st- spodficat*Ion3. : '.K*covs*sr of aptttito .frost low-grace of* jmot te; of footed ty.' f,'::-.ii;V

: ; . :-jE'roth-flotatdort'^.. for "wbich t'n®'n

' thbt the --yxV)

n the

to at laast 50 jxsr-cetjt cdrjoa 2CO iaosh. 2hu* it ' appÂ" : '" ' ;:' ; ', ''•• r ;'-r/. ' ;' : - ' --''^ " ; :;-~.:. :-- "" i ' : - - ' ' ' ' -' ''•'.'•' "- \ ': ^ - . : : --'; K-

tstol cost, of KiHim tdll be cdgjiificarrlly diffex^nt/tiiaUier an

a fitarâjrd' sTa&ii-stage enjflhiag circuit conUdrJUi^ a rod rdll is

addition, the capital arid jralntamineo costs o? the.dwat*^lleeti

quir-exi fer dry-iridlliaK thria alsrasive oro'woald bo hi^lu lio^^yer, tho A

jrdJLl t;eos rsrit ' j\uv tii6r istud7 ' becsuao the s^ttlirtr-'ralo o^, digpisrfjod ali;^ of , ; - ':

t,V.a ."w.-sj-ots "ojru is ver- s3,cvi, Jv^nco t) -a ij -inlier t^w jjimcnt o? ths silica fittotion

tl.z . r;..B -l.l^r th.i i.hlc;;ar4ar.3 9 nnd the AwoTall aurxj*iui.fj to pix)du53 less alias, thaa

*\ rcu ;.3,11* In t);j.3 ra:vv;*'':t.i{in it u:;;t b

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'"'V'* P '*" :* ** ' w-****^ 1^! ^") "^"—v*"'.*4'V ^ "-i^'O r^cv-r^y oi' cvpatito "cry- flotation frota tho

i.srm fccxxtitfc concentrate In a oio coiiceatr'Ato assoying 45# Fo ar.d 3*3i- *Âs^

oJf tb3 apatite pzo&stt vfaa reduced ijôia 2*3J5 to 1*355 . '' - *

? only 002 j^? c©at oi' U.e contfdneci apatJ.t-3* Xt ^?as fs'und tijat

notability of iho j^sivotite was esfcanced jsnd iipf.titia di;pr33d*Ki ir pH wao -

to the raogs 4*5 ~ 6^3 qy sulphiisic acid. Either E-5 or 2-6 'was B ;' r

;- A jjtyuy of tho of foot of rosshÔi-gidnd on fch'a .flotation o^ psrrrhotita .-"

fr-o:a tJOJi-^Baipnetis tailirsg imslcat^l that the greatest rsco-sssy iffas oli*sict6d fj^m , - -

foe-d gro"um to aboizt iX5 per cesit rfuius 2CX) isssh, and that. 95 -57 pes? csnt of ;

ths apatite in tho oro iaifht bs reoovai-ed in a Hot* tailing afjsaying 1.1^ acid- ;:

soluble Fd'and 35^ P^C^nTSJCJ pro-.riiled that the flotation i'-e-jd a33^r^t\ ci ieas-t'' '.;:.;.:J .

33 y* BrvOr* litua tlie s?cs© lixalts v/ey® iiaposed oji thlo iSJtihcd as oa tablirig* 2t , ^

appears that flotation of t^rs-s-fcotit.® aay bo waecl to bos- fedvaaiago in clsaniifjg ; -'; :

loiation of Arailta 20 ^

142-S j*ig aa

to b*.-

for- apatite.. 'Ih* heart

ditiohd

!pH.,**.* H or holier,

L-eof'at*,,* atnge-added^ in tvo or

ft:i3?i33 at any tiso* ' . , .- - ' ;. •'

Jr. ell inA^rwen i.t was obvyrvO'Jt th"vt n*j -neiits jEloated ii* pK

liolow 10,, .'bê 20 p.;r cmb of the n;2rhjUte floivttxl tdtii ih* axju;ibai'-

'.:or;hrv.*-3 In ti;.? bs^t of co^Htion^^ r^nd tJ'1-.i t-5'^.i*JnR7 iû s^rra-vst^cl liy ;xn

LI

r:-ivv.;rt -:;CO v.-cnh

:-.;rcc:.:abt tailing obould ho :

w:^' of 7^ to 97 Jtf? c#^t c.''

v-cj^ v;e,.l to iro^fltt

3.f:-d to ;i* la&ot 50 J.CT*

*v arctite In detrition

i; -3 itv.nt i^nônt o i* r v/ith

par cent.n't&ined 96 por ctvnt-'Oi ih*

tp'.a."ftL3ane2*-oloat'. iwitho'at furth

improved to I*5S Fa . and 3' ' '

'ea tiô alimi? fr ficton

-solnbla po and 33*4^ -IV.Or ;:.- . ^ jat.ita .In t.ha flotation f used axsl

19

lio x'inrCL

'-'; :: ":o Ber.e:fieiaiion o2 fiot* ^îiey^^ncontrataa qjr flotation O;

rwb iav^stlgatsd^ but. ouch a jS'coedure 'jsi^ht tc followed to effect

vtfsy oS apatite* T'ds.'rfoulci havu tho added worit that the cleamr-'lailiqg -' ; -

J tô?t net bo retyped to f ho hâci o? the- roiu^xoavJClcat, an the c^sar

in;rvto\tL4 b-:;ectts U& - ilnaX:

be flii

na at pali to v sd i'row the

IS and 19 in a :.10~ceXl' 'fenk o* pâêr Mo. 7 Gub-A colls, 6f -rfhlelt 8 wprar'teed O^':A

rs and 2 aa.'a}^nn6r3* 'Caustic scxia, '3 Ib3 per ton, 'WAS added at:tlie! first'-.

rapulpcr of . tho nar* " ?lo re.xgsnts covJid , to 'the - - - -.r ;:

b8cause ; th*J sîtii.^ floated so iîpitlly tliat tho corxi It loner

Hc-oi'at 1^~S, diluted-1-1 s^l'ih koyos^rta, vaxs added at ;i,- i .' . . . * , v . ' ^

of 0.25 Ibs p.--ir ton ?.t, each of tv?o points,.- J'li-ot and t'o^th :tiv4;her ccilla. ;

UûLt:; ',.yr;j le.io ystiyfivstwry' than in ' ar;tJV.ll~:-w-il-5* i&ota se or

curat'lcri or thu tost iu wldch coudlu lona tfsro not. ataoillsod.aru "bo-

c it 3*5 of ^he dirriculty o~ 3li^'';~acdi.;:j~ r^^ni in U:e d:oi*t coil-bask* Centre!

c? r pll rind tr.t- ^3 a -3.;; -.ratio 75 o i' rcrv .cr:-. v**re cz-iiiijat. Although orxly 73 P^" cerrf;

c j' thy s-.xitits was j-ôovaiMsd in the o2.oaaft'-?-conocnirato# the results sujrjoslsd

tbfi.t a satis.faet-c-iv as^hcU t-rdght be developed Ter. ixjoovori^g Mgh~fptfads* SC-KCÂ- .

tratea fs-oai •wn^TsagnerWia! tailiag- jj2X);xsr2y lalllsdl r.r,d i:: a .Ip^sr bank of collo. ;;

oC t!w iron ccxitsnt of . . sourh^^conc^tttirate ly ficstation e*r r^pyfcotits,

î not dona iu this test sjxruld.-be iavestiâted ay on altoraatiira to a- ;-'' - :,

in an a!ia

?.Q ta tlfea ; o f .S

Attesnpis -ô H-oat sU.icates

4,552^ usdwg totjreiecdium p^3?o-pjx5a

problem oi" doprssalri^ silicate aU.'.

tho jaotlwxt given in U.S.." 3r*t©ttt.So* v:

to depress'apatite, ^JTCJ'ttasfactfeasi

ehoulci bs inyestiâ.tad XUrthor* /,,

tssta "war© rxin in which tho ^ o v

of awl IB the proportion cf ttav-feed, -rofcarnd ftwd twol woyer stadiad^ , i ; : ; -"

These batches* about 60 Ibs eaoh. were t54)Hotised la a cor^nt 'alxej?* transfonred - '- . . . .-.- .-' -... ' .- ,..,'".. --. ••••-.••-.. . :":-.-. -;-.. ;-',;--. •••'.. -..-.^to a 3j2 ! ':dT2M;-sl^tt d^vin-drrii't tost^pallet? i;;nitod by fiafj blast riesior. *t hood

^d to

flue of.

rj' "a thoron 2c^,pX4J set into tho ox-

bs;t

.In julo t-33t.3. in

Fivs t.ts-vta vi#v-s ran on in* 12-Inch iXl^ht- livyd a-inte

i o.? 70-0 *- 2.CCO Iba caehj 'to dotisrdafc tho optjbsra islx, fced-deptti anri s

rats s ri or t*} "i ru/i en a 32 -ten lot* l^t&lla of t/sai-a s^-o gi-vtan la . - '

In

In tbs Xsrg©-fceaXfc' sran tho ras materials êr^ blended in, a ee:r#nt '. ..-'-

itdxsr In taicbss ci about "IGO-lk^ a:sl tho "psJJUts traasrarred in ICCSO-lbV l&ts - :';

ty b*^;',7 to'thft. suygs bin of the sintariB^ e'trasad* ."?ellptialjjg vas poo^ b*jcau3d '

ox* th* particle tiiso distribution o^ the- feed^ . but aight ba^s been isiprovod h^cl a

^ such as bsnbcsait®^ "been ' ' ' '' ' ' '

fete of Rato ci* fcan

*7 S

ing data fjâ on© 2/^hour period, October 13-19/55''' '

rsia (ibss/nr) Ss cferêd Sxy ^ of r

' '' ' ' ' ' . 703 '.'-"'---63

of

j jtf of total ch 7.X '

.•""" l* "*"'•'••..VL-'.'N.1 ' 1*.

-;v;î

;V ' -V Total .;.' Feed rat*, IbsMaVte, 2oL . . 333 -- ; "- --. ::';-v

r.ocause oi" the s^:1! sirs od drUy a A^-lnch.bedi ooold be

j tefA to ©fleet .sintarliig to.the i^ra'tea tut to aioid adhesion to thenj* ; . In ^V- r ;V?-

i33q*;o*ifto a .cvich l&Tf-^v p,ror^rticn oi* i*2fcumt*' ( -O/S") was ' jrroûcwl than nd,5it'—-":' ;

•;:;^'i-,:tod In i\'.ll—3.*AJL3 o^X5ration. Act noted ntovs^ "* ratio of 61 r.os rsed.to /'-.

r.r': ,rr;.-3 ;r;v:-'. tnrrlsd, to ":-';l:;n:;:o ^swfactiio-i o.? urAiOfrdr.^* - Fus't'ser, to M-Cai o -. . v.

ilod thVi .v.xb. !;iry co n;\li.;.ona oM-aitisd la tho ylnl

'i;3l iv.p-u'c. v*i* lo r.- /i ton or f'.Jcsd to tiva ;;ii';KKJ u?.3

to the oîvrîod. recj.div.v?sri of 5C.O,GCO B.t.iu to y

sons, j&

by

ro3tilt3 of R'

fur C

and si \ttesd txg testa ty

, hava b-- In

PftlleiB mada b^r XjxrgjL. wero alsdlar in app&aranea ar.d sttength to those . - /y

a frva a l~ton lot or apatite o.f FUl-ibia.2.6 ia ths iatosixtoriQs or.AlI5,8 Â v^;^

b/ I'i

Aa rsot^d in SJMMARI, griwlability test.9 oa oro, 2îw3h Ixiwip atsd -

ai^d *n cognatlto yoyghejf-coftcetttrats ^-gra ran bgr; "J '

s^f^ Pa.* arsl by A'J-Xis Clmlrjerst K-azrufacturlng CoiapajTy,

. Final reports have not been roeaived| test-data are bolng

K* Ztidrchex- of Harc-iAJ® Company aî Xr* F. 'C* ttosnd.'of Alli3

. .'- .'. - 'S - '•'•. "- ";"

•* ~ - .""." V- : . -; "*; -"

: -. ;,:;;; ^.T*vH .

I-:Mtr'ition te-^ta on :r.i^nato.to cloar,-ir*f;oriC-entrat.o txr*d on both

r^4.tc- -v-:r\j siin iin the i^Vj^ntoj-ios of ^c\iw01i

nli--rl^ ? nnu of Uuoo Corooivi-t,lcn 3 r-'l-iUcidj XUlroA

~ 23 -

610iiuttlifi;". tout, o on oliâ fractions .u'oro not couple toil* Cqparan 2s

accelerated aattlin? of neutral pulp;), but not tha highly dispersed alirao ~

riototicn Uvxllr!c':* Furtnor \-wrk ia in-Jic-itcd t-j otuc'iy the eiicctivenoaa o.? lisa '

.rMic/oi" ^JA;:;4 in rash Îka.LIiis pulpa. . ' '' ' ;: ; ' '

the result o of teat 3' ojf this scale cannot bc eccpact^ to .-" \. ;

anticiâta, In detail^ tha Jesuit B that aay bo expected in rull-sCtTlo oper^tion^

th^ nay be conaidsrdd ^nciicativ^*' Sufficient infcrniation was obtainad, in Jiy .1

ooird.on9 to wake a pi-olisanary estiiaato of udilling procedure and costa* and to-'-' :.' : .' ' ' -' -- ' '.. -' ' -'r- -' :: - ' : - -' - ^ . •..-••. .'\- *-- ; v , ••

dnii.Ct a teatntivo flowsiiaeb for a pilots-plant. Thio haa lêen done. . ;. 4 - - .. ..

'Ifcfc ors is air.^nablo to 'treatment involvinu tdllinc: to 20 -

tvfo-stags v^jt m^siic cohee?itration v/iUi intw\*srdng railllng of

trata'Cto 35 ~ AO par cer,tfdnuo 2CO ra

of tha non~JM,'?nytic t'jA3.ir^; bjr tabling, JCrotJi-flotation oi* a co;s-" ' ' " ' ' ' " ' ' - ' - ~ '. ' '" ' ' r ' ' - . . ' , ' . . '' '.' '' -. '"--''- "- '- ". * ' ," ' ' ' ' J ^ r ''-"

hinatdon of ths tô to rocover th^ apatite, Uet troat.-cent throughout appears : : . preferable-to thaVin a ciyy vz ' sdxsd circuit. ;'"^, : -^';, ; "'•• ; .'; ; : •'•''••-'•'•'.-':.'^^'.'

AST.; ouch'o proesGurs we 1237 03tpeot to recover #9 pbr cent-'' - .-- ': "' ' ; -' ;; '-:\:x '--,: '•'•'•V,''" ' ; '' : : ; " - : '•'••••.- "' ; •'•'-•-' :'. ; -.-"\' - ;^---' ? ^.'.- V.^'

i3i\gr,etilD (97 pjy cent of the scld-solubla iion) in a corwentrata coaspriaiiag ; : ^

70 ~ 72 pe-r cent by weight of the ore and assaying 65 - 66 ^ lyon according to .-

the titanium content, 1/t twriijanese, loss than O* 5^ (silica,.-and le SB'than. 0,1# :

of each of phosphorus end sulphur* The iltaenitc ia so intisfti.e*ly a^sooiatod

the n-A^notito tloat little i a rejected ly ra^gw^tic .concentration, hence ths

titardura content of the rxêntiraitf is larôD,y a Auction o.C the aoount in

o:-'e cind tl:a sr.tio of concentration, OiBill-a-ly all, cr nara-ly all, bf tha

z-) ray er.cijct tft recover 70 - 95 P**r ctrvt oJC tha apatite, accor-iUT^ to

tha gs^da or ths orw îd ths sethcd o^ irstvting i!w noti'-^s^îs tad.lin^^ in a

tv.itt^rsnb.rs-ta a:;^'iylr?.;' 2^0-^ r-'^-ssxx* ?.nd 3-"'*0{2 ?oOf jslnlwsn* ,;*he reaaoaa for tl*J.3

se c ne oi' t ha pplsaj^' objsc'tives was to olvt^la S3 Tj

dl tons oi' apatite concentrate ass^-jing at least 76 ^ B*P*1.- : ;

^) 3 isseft of tho ora o.? the flrpt carlo?yi was use4 for this ptsrpss^

a ilo^sh*at Ussi/^lopd accoxxii.:^.!^* 'i!ta lov^r ^raiia of t4".^ GCKXMS^ carload

that psôviaiort rmiat bo taulo for iyeatiivx Xo"sf-s3mU* ulll foed and the

i^tiiricd to 'foset this esntins'SSicS'* Prisssar^ to coiuriste t&o prc^ras^s prooluded V.; " :

in teat-^rk poadias; coidplotion oi' asssjrs sd that- fcrj thfr tia®. resul'ta ^?ard "x:

tef XXcdeat or® re^reli^d for a test-win JJR a cirovlt fegrv&itth apatite 7-

raiy/iit.bet recovered-'afc optissas ofticisiv^j iioia Icw-grada'oro* Iri eonsacuenfta, ' /•• ;'-',, :

eonclx2sdons ara "bessed paxt-lj* ori A74Jl-raa5 on iatXtd-ion lota of csrss.ar*0l par^l^- on •••^

soale'' tests' i*on to 5-vwesii^.ta the; piôH^sa tlvr.t."fcecssxe evlcleni/Itr tbe

of tha pro^ria.an^p Taxa applies pajrtltjularj^ to treatr^nt of th* non*-

^ cy/ frotli-Hotation* fUrther piiat~soale testg yill. bo

to conîrca thd i^co^^ry .of apatite igr flotation o^Hy* as iwiicatfed .ly

tests ajjd iiweatlsatod incosijiLot^^' in ono pilo'tr-test oa a alia^ fraction

: IJecovury ot apatite by tabling da8*iid,ed or unel^ssiiled fecul idll

probably n&t esssed iX) par cent, imd 70 per cent apjâra to ba a asoro likaOly---:

; V\irthcjrut(r8# -if the PÔj coatont ot the tsvbla fea^ l* loss thon 33 par .-A';•"'•'•' .'^ : ' '' ' '- ' -- ' - - . •"•'- ' : - ", ;— •"•-S"--''^''; ; ;.'.--.:i ' ; . - .'••'•- , v .-'v

ôduet ssay req;udrs rui*ther uj^gjmdit^ to jasst thd.3*?*I*i - V'

oi* 76 psr cent* iie-ôv^ry 6? at leaoit SO'iJor coat of the apatite

my ba e;c?eetsd V/ a KOKfoimtiorv of t?.blinf, wid, ilotaiionj, but tjjia -Jsafôrs

t-^ :w;.-o Xiirltivtor, ci1 sidTdrccKt fcîl p.osi^r ;.rt ;!oc9 tabling filotxa. For ihoô

^;n:;o:::\, r-.-ici to sL"i?li:Cy t ha flcv,i*haot, ilotatlon ojf aratito frey rJOft*2?a.gn*J

tnlllnj^ r.ii3J-o\i to -tt l^nst 50 ^;r cont "CiCO p.3Sh,' 5..-.; i^ft?:.vrjfrnded as tha ^-

trK^SJg?,

ui:Ur-;.i :xv;;/ v-;.n.hcd ci" srraciirig H :h ivôve-ry b\ ti^h-gâ riot, cc

ll033 ox' tl:e t'rodsj o C thy frail,, fii^ conditions hay* bs ea outlined in this

^•vorU ::,-v.o.)vs."y o .i.' 95 r^r coat of the apatite In eoncwtrata aasaying at lâ^

.';o ;* iV.O- rv^' bo o;c'?ect^d, a^d t hw r^xilts o? !mi?.l-ocfJle to?;v..3 s&v'jCs'i that U:" y ' . . ':V:-03 ootitotxtr o i* tni^s cone^5.ti-at3 say bs rsduceti to los^ thaa 1,2 p^r cacxt l# ,;

.w-rst-iition of .^rrrh-otlic fycjrt u.** Thass yâulfcs she aid be conliKasd by iaw**-".

cc&lo tosia* and tho r^DKLoaa of control of pli an-i ecuceniratlori of reaiî

- ;', Both tha rîiiSvltc! and tbe'Apetite coRaenttwtcs ar*a aaerabls to '••V.'\'-

. . . . - . . ftirfchor grinding and .wlthot3* bimer* -/Si

r -ba aiatsrtxi dlreotl^r* In actto ot operating.',, ' -;. ; " ..'.' - ; ; :

. '.U?Hsttit3.Q3 edat&y- "Kith-: f air strength and an app^'&nV

uusfed' iri a ,12--i^n lot fr-onv th* '12-Inch, 3*^3 s^,* ffc*-J

avsi^ -snd tha'- quality, c-'^wiici IJQ ioî^7ed in

, 0.9 lacJu^s pî' islnutiJ is

of l insh p-ev rdnui® i'or bilaat Itunaco ' ilua

jr .the saass'.aa

4*5

siniexi'ng strand

oocratdon* .'.She ob- ' .

oa3 than th* Bvsxug^. - '

cesipoaition of .tho . -

h It

cspt tb-vt ba &TX* sllicuj- increased giightiy*. - ifellQi* hay* the

ion in

acd

. . Iib0ratsd in

laas

.g sni . v. :.,; :

fo

Only a stisall .fr^ctxoa of tite jt

ri by Vro saatbocia iiaod ia ts^* siill-tsst at Ottawa •'and as. - , -' ,- ' ' '. - . -- . - -. ' - - - "trcataeat ot tha. or e* Probably leaa than 15 l^r csnt'of tho rV.' : :

a **dH bs xôovored in any fraction 5.33Si'lng jrî*o than 0,2^ I' -. i - - " ' -. - ' \

tse fi'actlpna *asgr 02* my iw^ bs

nt the

;p-M-:vi.--;:! to \.MOP. lots

tioi, lw on rscîvsd f rosa

/tr*ii S

S^^^

-31'

ist.i:3fittf:5 of ^vmvi*ftt:uirA?#rjt.j ajra ft'vaijxiblo* 'rhc aisa arid ty-p# oS roil! i'cr

Ki"i:?xi:.:\.2: t. .e tton-fi'igri'tjt.le tailing to the .props** c&frs* o/ fiBSi&sa for .flotation~ . •*-

hos :iyl; fe-^-fi consi^rod* Kc-1 consumption In ths !-^.r-J7-i.vtil' v*i.o not recorded; ; ;

1^11 i^r in rardllirw; 2G ions of sa^stits rou;;hir~ccris^rjtrste '^s 0*4 11* cs per

tin* .If w aQsutKs au equal raai4 -fx-oa siill lir.-3j.-3,, tha tdtal ot sol consolation ;

pf.y io^ of couctjati-rite is O. S Ibs, ' rjfhus th^ t^)ti-sl stod c&unrsstion- psr toa oi" '

oro uay ssitorii to about .2 1'bs* - ': v' . ; '; ; " . ' . " •••- '- "'-'-.' :- : '' -' ' '- ";-"': '.

^rs s-i5:*-'l.iitt

. .. ei* is A^sco?i^;adttd i^t^ad o? tt

^c-'siy 3.12! a i)orrc-^*type illter rather tesst a

s ^wrd.i to b^ c4Tleie^ .ir* holdli)g- feo palp .'

cor.e&ni

50 per cent -2C0 s&di are

oliTso p'ccbetj IjO psr eesrii *2CO

fd.t/n a !-iiish c&ke and s, 2-vidnut?

Pulp d^s'sai'fej' to i!-: 0 loar fiXisir **

cartt^ Th^ filterabllitj'' oS

-325 assh Xncr*jft3GSj, hfnca further

. Prolisrlra^r t

liidica'tad A f cap

•with allovfaacd of 0*70 safety '

^r east solids^ coikti raoistxira was 3^ per f 7^'

i&s rapidly aa the ^ro^orti^n of ; 1; ! ; ; ••''

isfc V^s doy^ io {let^nsins -iho aii^ of '-'"-' •.'•. . . . i "* •. *- ' - .' ' ' ' ' ' ~ ' : ''* . . - -J e

in ths ^ki- to 9 ?"2" tent if .the -.!l

60 .^j* ca^t of -2CC sujsh ss

Tha effects o-; yyitlinjr aênty and f.ilu-r aioa irx ae:".^ neutral and

ir.hly al!c.tilino culpa .Tiist ce i?ivcsti^.atcd. .'iopArssn 2610,, ;(-t r- ra lo of O.Oi

r,s p,'r- ton of eolic!a, accelerated the sHtlinr, rute of neutral tailing sli^-3,

.ii; h--.d liitlc i^rit ^!:*jn tho flotation tailirv.: iV:;ja th.ls siiK-a so.3 ivljvixLy

l -*- 1i- i: *'l'^ 7- ' "'L i* ^?2 vS^ 'C* î V *^ i -i-Jfc # ' -

A raethod ha0 boen dovtjlcfpod wbereV high-gratio cottcenti'atoa of both

aad apatite aay ba recovered froa tha ojxs b^ rolativel^ etapi^ cdn^ral-

dressing techniques* !The aillr-treatajanfc ox' this ore requires two sepo.i*,ite yet .

iateyJLoc-king circuits, one .Cor t'ocoveriruj the jr-ignsiitc \fj wat-rsagiieti6 concen-

tration, nrid ona for recoyerlng tha tipatite, pi^ferabXy by flotation. ' Surricisnt,

data I'i-r/o Isêri collaotyd on the fon^r to ûsti^r, In 2iy opinion, jurelisdnajcy,

plans for that portion of a rrill* As indicated JLn J)I3CGo3lON osvo3rs3. problem:*,, ;, '

all cd-noy,, lenaia to be' oolvjd in t}ja apatite circuit bofore full-scale operation

is undertaken*. A prsilitdiaary floydieet, based on tbo 2-dsults of the Ottawa teat*;

wosic, is appended* - ; ; - , -. ^ i,:";. -' '. . v--. - : . "- ..-. l - ! .' • •"; ; -.-" : --;: v " -V V "-'A',x'';- : '':'- -"'i: ^K 'V--

•**K-Y"! /•'/""" - V* ". *'"T "t -f * f"*'"T •^"-*vn

f -j ^Î^yrvd. CP 2/^91, rîidv^ci Jur* 2^, 1955; 3.G3.,2;0 IbSo

,-"*^---i , "-1* ^ "i " v";,'- - '- .~*.'--i* n f Vi :- *N*/'^ t ?-*o ^**r* - n"*,.*, 5. "*i v\ A*"?*^ /""* ••****"i •It1 ^ n *s*n Cy^ -** ^ ''M* i. c/j- H4-4.*vi,!.^ -.*w..'^;* i.^^v Oi --J x-.:.t^ ^j.iiiii,Û .Vii U^^^Z V^-v^4.l.O i;I iS;* Gr ^v 4-*^

-* ^ il^-iv*--**! * * l * ^\ /S v * **"•-. "* ^--ha- * J* "r**" * '3 f AiV*1 '"IS** V ^ i * -ttof ' 'ft J O f*/"* *^ lf"* "^ f^ V*i7^ *" "T- - Y'^f*'^'* j "'"^îi TL )^ *? * *-**f ^^ 'vj^^"-'j***r* tt F**} •*^ J^t^*

era shor sot at |~lnch opsnins; lo tlaLiire** a. ptô-Jn-jt for ?sti lalll food that - -

contcdned less tha.n 6 for cs?it of plus g~lnch* - . - - ; '- - '

A head saspl-3 vas cut from tl\e 5/S" co:i©-t:rur4isr product by a t-w- .

atago autoaiTitic eaatftler, by which a sample eowprlsi^g, theoretically, 2 per

cent of tho orlgiaal ore, ma cut* Tho firat-slvag^ cut i*vas 20 t^.r caat. or

tijst 03s®, tho seeorsi was. 10 per eont of tha. first* 'This oaajilas* actually cat

about 5*5 psr cfsii? inabead of Z per cent of the feed* - . -' " -

llis or a naa criished in t w lots, tJ-,s first of about 20 tons, the .;

sscondl tho rci?asdoc5,'8r of the Ofirload* iyssd samples WT& rffiducÂ by otsga- : -.

g c*r4 splitting^'trough 4, ^ and 14 r.3*jhV tho t^s) head o&aplsa {/-s;

ions*

. Total 54 tens* ' '.', -; 2671 Iba*".

- Tho following cuts of head sample recocts wero reserved for

scale test-work, the r®s*dnrter waa returned to the* stockpila for xxxl rill

Seeo wl lot

ISO 11 i

120 Ib

of h'j.'i-i c^-plci ^.'sir:: r^por-tecl a~ .Cello vs^**

72

wt--',

: 15.05

;a sulphur, also

(1) All sulfur

(2) All Utmiia

(35 KtaKdti&sr- c- - . - '' .

(4) /di ph

(5) i'

eoeiposltioa \4wa calculated

to n?rrhotito, F

to

10,35"-'

4-9?

(6) S5J.ic^, i^ssldwsl lias ebcrre tha roquire73a?it Xor aj^tits^ otc,, vssra '••y

S3 iaeitientala to aaku' tha total 100 per sont* y v " ; : '. -.

vssdghts, 19^, wsve used ^or all

Oa this b^isis,'and at th® average specific gravltio* o* the respect-

;dr,es"3l3 tho ealou3.at^d 9or^x)sition of tho ore of t!^ firut courload

35 ~.

- 1 f).jo i -

"as

of —1"A

Xoii

Hn Hiukel'*d

• •-. * .

A lot of 1&& Zbs*.^- coned. 2ro3j about oas ten of fib

*j©ct# was Rersenod on f^usy asrsens frost ;|-dnch 'to 20 jat

fraction-'.(41 'Ibas. 6 02.) v*a's s?GLlt on e voasa rii'iUo to a*oout l .tbi

;crgso?!4*ci ou

total pei-60ntart9a of tad iSd-ibt .^. ... - . - . - . .' - . ..-- . . - ',.' J'

^m dip

:..; fines* fS'^ij

" ^ "-; *\:-' 7 -.- :'-. i,"''-:' :-- ;.'"''.Y'v ;^';:-*.' : ";' ./'r-^y'-'' i:v'^'--;^;f jf -V- : v'f.-^4;v" emshejr wsa fts* oco 'jwstch'cOLoodr-.to deXiv^jr a '""" - -- - ~ -'

oh fto- ^0 5303h^

.ir,, ofeill^ ^s

T'art .ro^.lvS of

. -Xroctlon

^^*??5^^?Si!^^^^^??^?^!l^

.jo *-

^LX^SLS-^^

ID

-35

100

-200

Total

C-':^r\ lot.

?i Ott s-iQjt!?

JO.O

9*9

66.9

97*0 .

^^.1*/*^**-f-.*-***-

35*6

1.6

3*5.7,2

6.0

5*0.

s.o

on Scre Passing

96*5••3.0.7,:;.—

30,4 '

#^*6 ,r, -' ; /.,'..13*

r'''i } *-03 KC"** tO .^TT-J 0*13X."1

l^^^^^^W^^f^^

Cnly that tm*i of this carload used ibr tno. rod r-d.ll test., about 10 --

t:;;*u-. '.-;a.b crashed. Cvusrin^ rvnd vailing procedures 3 *?ero the i-a;:i8 as for tl^ ' '

:;:,ô;x hfelf of ths ' .firaU WS'lo-id. ' . ' ..y ; y " " " y ' ' '

: Tho head sample, . vêlghiiv, 4^5 Ibe*, -was staê-*cmsheU asa spirt oa - .

Jiy B and 14 ice oh to. a lp~lb. ta?,plo .front -.foioh" o rifiO.cd cut ^3 assayed aa .

; - ' Hsad saaplci rejects -wora. returned t^ the sicekjdls, exciepfc SOY a ^.y-/'- ' ' .. . " ' ,- : ' .. ' " - .'' l '' . . ' ' ' .- "' '-'. . . - '- "".' . ' ' .'' *- '-t' -' -- ' " "' : . '" * *

2CC~jLb. lot of firot-sisgs ateipl* roject rê&i'VRd fer •|?rlndabxlity' test. ,.. ' . -, ;."

,. 3ho orst contaiisad ts-aTip stx&j, ps^rmtito, nepliellno t^c^te and

cstransoua materials picked xip fjrosi the yard /it, Cttatia .d

tli© eradij of oro milled 1^3 loêr than actually shlj^d. "- ' :iSiho.'

ol ore J^ro;a this carload used for the Aerofall r&Ll toot (picked lurapj.was^*- ! ; ;.

^ ^Lean-up,

: : ; *0je caXculaUtd compositions of the ores of tho tvfo carloads are -'^ '-''^y'-corscared below* ' ; v :.\' '.':- :'-^ - ; . -v?'v" ' , -'.'''.;-' ,/ :- '"-' . - : : .". ;; -- •'./'• :^'^^V^^'r'-'"^^'"'^^;V' " ' ' ' '

1st.

- car. 71.3

69.0. V^'" ' ' . 25*7 -^59 \; '''; •:/'--. , -." 35. - .y ;

val. Z'19 27

.

'H.. " '^ .

;K*.-

~y**''y.Kty

1.9 /2 : .

;'^4*--^^8?

~ 23 ~

at

Li zc.&i r,u.'.f-l~r?,irt -s

;kkJ8j Vfyya cmt sîv

e.~;;:v.oi',xî-i, usria

u finr-1 products., awl

s and tho

0:3 a aid* t b^nia., jfei- ^jiGt^r

LVIyd, 'to choc

ri addltioa, g^tb-aris^lsa, tiasd xiitii a atop-Hateh, têro c\it at' : - -

ssifficisnt t#j pro'tfUla o.d^*.3jtAt© infoTâtico ci\ condition* v- - ' , . " * ' * * . . " * - ' ' ', * * '

in tb0 eirtndfe, cjjd tJ-.^n assayed ssparatoly o? cowpoaited

V.o

aa for jcoat2iol? for angr oy all or o&Hds, scroon and

m ~j l f

'.Or:! ore haff cosm d^scri'veil* ',V*fl pairfcisl-aîrxj diatribUvion Irs

of Vao -jy;;ou3 ^0^5-^x1 sis r (rcd~?QlX feed) r,?. 3 bsai ideated rj

^^y^J^S^^ . . ;' ; " '."••/, * - • .•-

'I&fi spe&U'ic gravity o:? the ore fyes the *ifat. SO ioj*3 df the iTirst,

load WAA detestained on a toOCO*s2^wi lot of **4 KsJsih heaci sampler b? ûte*** : ' -v - ' . ' . ' '- - ,- -

jiiaplaoênt* fee bulk dsaaitjr of the 994-lb* Iâd oateplc cut by the auto-

isitic aa;spl'3t* ia ths iôosi circuit v."as doterjaineil 1^ direct 'coR^ftfiaan Viith aa . ; ^

Gr* Ibs/ 9U*. f b* '

4*17 -- ' . "

tr^t*r^V^**l AV*jCha- /sO'\ "tt'"\^ 4*1** ** *t*rt'?1' -. " . *l ^M - . , .1 ... ji.-*i nxA •S' * * V** 5i*^ * f f-' V '**^w *i*Cr V*w* V4 0 . - . , û,/ * ' ' . . .-

. asigla of rspo'se of i-od-KlSl foe ^-aa tseasared ea three-. .. - : - - ; ' ; - -- -. i ; . - •.:'---.":.;,: .,.v.'- .'v'-....;.-';.'. ;V •'•^"-v/-

(1) îrô bi^ cona-cruî&r dlscharso* ^ , ' : '\-^--^': - ' "';'.- " V:-

(2) JPil^ of 1st.- sfaxga sasipler s-ojectD, about 1,3 ton

(3) Stockpile o* iroo-nill fotd, about 15 tons, ' - 8lii;ht3y: e-- Averago oJf (i) and (2) '- 290 ,. : . ;/.. ' - - '-: .-' - ".- -' ' : ' ''^ ' •:: ;./'-'/'..:.'".'- -

; \ o) ; ' 330 . ' ' , ' • ;.;-. 'v ;^^'^' : ".; :If, for ftai'eby ractor9 we assu-ê an angle of roposd of 20 and ft

ti'o'.^'iotl bo It p -.Uo* 3 Oi-i-e in Îch tha Jtaivi*? o? l;:sL1îatioiii of th^ otvtor "bs

lub:r^ ;1^ or the vxv^s- of iO0 to r./vi hoîKonb'al j êri tl^ 5.?s\i*t.^â capM;i

i'i'ii-j.r.tsi ru;V4j :EO/ bs escalated i*r:v;i thft t'o^wltx V ~ .IcW"* v/hyrvj '.-J is tho

width of tho belt ir, inchsa and k is a factor th^t vAtl*33 according to

' 3U2 ' 3LS 24 .30 3^ ' ^ . ^ .60

k . : 3o2 3.3 3.4- 3*,^ ..;3^ ^*7 3.3, U

(L Tono/hr S 1CX3

s 15o Ibs/cu.lt*"'-'.. 32 74 136 219 325^ 454.8 174 ZW^y.ft* - 36 ;^3 152 ;: 2A5 3^3 . 50?

(!* toa? psr heur at {as???*! srwrnin.?, speeds aa IKC

Edit "spattil, ft/rain* - 200 200 2^0 3CO 3CK). 350 ; 3^ '^350 .: ,; !: ; : V;V:v3

t* 64 . IJG.. 3J#- V 660 975~ '"' r . * ' ' i - - - i'' . i- *-

•"t rt : ' 72 165.^^yJ-'J* , |f- . JJJJ

Actual capacities on horizontal inins isay. ba aa raach no 20 .porceat.higber'Vv'M"-:

tha angle ot rap?es^ i 3

to 180 jsscidssusa accosiAii^ :t5- sis* oJf •Rsvterial^ belt-oapaaities may aj^rwdsaate .' ' '

.Pisa A

oi' tho Kost evident characteristics of the oro vaa tiio can*

oy portion or tho apatite *as ilbsr&ted frt)f3 tê s.Kiêtito at a i-d- - .

rse rjjfinci awl tho {Trorôurjced prof^r^ntial srlrînrj of tho ?;p.itit.5 ,

rnillin':,* 'Krio r&oiivid that tyo*-atô uillill!^ Vo C;îloâd - ' p, '

(l) Cwu-50 cixrsJd.v;, to 20 to 2S U'Jsh-oi-^xdftG to effect eoonor

ilon of U:*s iicut-xtfj witJhwt :;r?ûo 3Xti:i!nv; o? It prior to ro

o

(2) liepdrsi os" th.o rou^h^y^concer-brata to r^ducy ths phcspbcrus :

•^nt-erri. of tba fined clcar^r-ôncenli-ato to 3:3sa than 0*1 pex' CQsri.* . - " '

(3) If V.io a t: at it, 3 1^ to be rycovax-:*!'f*oai tha ixn-Earjriwtic

fraction oyt'idroli' by ^ro^j~riotatlo:i? than a remind jasill closed with a

r :-:oitld b*a 2*J!j.drsd .Tor this branch of t ha cirsui-t.. ' . .' ' - .

' A exit of -liV woah he&d .^sjapla oi1 t;-s*-ilr3t 20 tons of the ilrstj''-;'.--", . -'. '-. - - .. -- - -...\' . . :- ; ;-.-'.;' - --.' ". '."••'''•^-.-' '. •••''' ? '- : '. '.-aa saa3^rsaU Igr hr* 'S, H. )2.c';:al to xSetai'sda^ the degree o? ccardnatlon ' :

*3f to iVec* t?:e-sssgastita: a^si apatite graiiis. 'Ihfc rasults wera

In maoraerapJdc..^jort tb,' U05~^ .IxO^r ?^ 1955, of. îoh a 'co^ Js.

To confirm 1'Sr* r.' "' :'.- ,:'/ - :- -

c-va* 3rja31--9ftnlo C'Ksc-

cd; ia 2

concltsiona and aa a. farther ".-'" : ' ' ; ' ' ; . ' - : " ' ' v 1 ' ;: " ' '"' '- ' .

o^ts V?STÔ K*un 6a Iota of the-'secee head ;. -':' ;

rsci' 35 xa,, -

- instead pf-a'-Juavis tubs. bec?-ttsft. tJio.-Ciockqit anchine

Iwr/de coarse laatorlal that tJj-s f/avio taba vttuJd rs)t, b^4 larger e-a^fdes eould --

be tesisd* For. these tests a 6C~lbe lot of -14 reesh head sample soêct itii&'C;

crushed to -20.j^^tj f :a fchieh i-lTfleU cuts ot ab0ut'4 1^3*'..^ch"woro stage* '-.

V. . To idr-alatfc plant oonditioiia 'no r pro ducts we?o (iloan*d, ; -* Jll ]j^

t iltemi, di-ied, ,.-.-:oarh*.;d aixd asaa^d. ^3itlt3 'ara sunesiriaod -In Tabla 4*

-' : f1 f

,'.c;io -'V*

rT^ko :-;t ^-,r,o, -/ifly ,-V X c';o. Pemd: H^-î-'^

.-'5 e '.'i 'i. " ~ ~ - - v : t*. -^

cMr'UViiU sKssstrsEKssa

i **~i ' "^ ~-^:v - \ ; . y•* .i.*,~,-i. n.; j^-j *.V^J ^ ''.i. i

**oial. k ICO i CD 3.00.0

2 tif~).

'3 . 23--.

4 35

KfiS. Gon^t. 70.59- . yaiiiug - ' 29.11

. .Sbtal s* ICO.iX)

l^s. Coact. 70*92: Taliisijg. 29.O^

totol st 1CQ.OO

, Hag.- Conct. - 69.62Taillrv? ;; 3^^.33

. - ; roU2. a -' '. 100.00

53.624*52

^.42

63.S94.45

65.01.V6?

46.68

1.553i*ZO11.03;

34.1410.96

.89 .34*09X0.9&

97*2 - .;

S. S1DCJ.O ;-

97.2.:-.:2.3 --;1CO.O

97.0:-:--.3-0 v-

100.0

30.0. .-.90.0-'

1CQ.O

-- :- 9.4- - 90,6

100.0

-..--"5.6--•- -94*4

. 3.00.0'

" "'

'•. . - "Y

* - **.-

'••-; :' "*

•••'•'- - ..•••x,";'?•~ .,, - V :'.t

- . v ---. '*-

K Assay calctCL&ted fs^ra ays^/9 ot presets*'.

'•"Icro-cîidaîcn ©l' the' prodnsts ehow^\ progrsssAv^'J^r bstfcor libantion finta* frrindi^g* Sv^filuig prcKiuct vvis chi'Sily ajtita.^

In 'spits of ti-ja f ae t thai tb* caxt-ido-JBsiSd disisibuiion dniha

testa vK)iilsi ftot bo ihs' tsaso aa for tho

,' ihfc results o f

of * /

"fersalyoea did ô^ the

,illt3g o? tho apatita •Th*) following s, glvirig th0'"•.A^"':'-

of -200 sift3h-cat.erf.jsl in each

of p,xiticl^~2dE0 in the j

Illustrate ihdo. Itie asciaa

in ras

(o)

u, Mûi T?.-:r.-5, v'ol

-^S'lr.d of

J .9* O 'O*-*

Tailing 271

20,7

233

••"i-} *5*i-v* J?

•U-)7 •. *-y l

v/gro lots ^rora oach aa

' A 14 "lb* lot- cut by riffle

repeat ^â ^^ first 20 iwrvs i

cr* standard ^/ier screens*•' ' ''.'.••":- " :-"..'..'" "" 200-graru lots of each fraction vax-o' ''' ' '

ftoish,."/ , :.'."a 60-lb lot of -1

^ band? plug Eo~

o? each scs^Ki fraction, "weir*:'-'---'--:-- '- -- •-.- ..., -."v".:'. :. ' thrc^fb a Davis tube in lot sj of

' .-"- --.". .-. ;*. ; .:'':'-'-: ;.;;:; *-r v la ea eh. instance tor Vs^l^ht aaiti easay* .

â^., Cut 3

A .-easy 6? his U

MILA 6CCO-graa lot of hosd s&sipla rsâoi was j**Wecr*|en3d on 65 and^ 2CX) : ^ ri

s^d the Jbxtctlona driod. rfhe dried fractions we^d lmr*i~3creoned .froai'SS •. i v^;?.

to 65 Effish Inclaslv&s th^ **3.00^ -150 ard -SCO MiS^j iâciioias^v^rdriliTiaJied cffi :. ^;. ;

th-3 Bo-TSap* ths -SCO RDsh T.t)rtioa nastjet-Bersesi*^ on 325 lassh* Cuts.- of each v;;

- •fcsr® taks*s\ fox* assay ami iJavIo tubs lasts &K ia (l)*. -. :-- v!: ; . \ '; -'.- : J- '

(b) Eod-ldU JTded, tail-Ban 19* ( -20 assa. tsssww undersics)* A ÔCC-ttraa

l v.'id cut a a tTos-fed 0.3 in ' - " .' . - -' "

i •8s f!?

*.f?

" i! : - ir s li S.' - l f?

--. if: if" i s ri s; It j* ?i

fi

**

i*

t*

-O

*"9

O3

r^ c

v-i

-c c

-- vT

" c:-

-c-

vO

•* O

i-

h-; C

I t-*

Vi 4

--

O O

*^3

C"-

^-' V

t 4^~

*O

3 t..

? *.-

* t-J

^5

J O *

-* O

*-*

KJ v

? -vO

VO

J2^

I lo

C*

x^j

JOvj

Ci

h-1 v

*i O

* '.-•

•' -'

- -:

' '

- '

'

* ~

^"

o^

* *

*

e *

o

.

--

f {a o c

i M c

vs c

s o

1+

4

*

*

O

*

99

O O

O M

f? }* V ^

i?

i;

t'- i ?* ii ii i; ti

if f c fo o

vt o *5 A^".

li'i

[^

tci (^

"f !"

s-;?;"

SS&

!2:f

i if f? •y l

m V-JO OK

* ,^*

wM

? s* h

.

g "** o E *"2

O

T*-

.

!s*i

*a ft

^I'O

.e

p

*-e *'-

.

OiJ pSi

ulR

ks f.c*

i i?^,

i*tt .

Ht~;

* rv"

; f*

--, **s ** pS f:

Q

'--

- 'tv

*9 l**"

*bfe

":t—

JCS.

If o

JJV

AH

-

,

T f* to

^r-;

**S

'' •J*? j i 51-4

•ftS

'lo 5 fi

--jf

^-

jil"1

'iti.-

Mi. P

r

: O -O

CS

H V

.^ C

5 fe"

. ta

*9*

94

AC

9O

-3 W

O C

--O

V3

CI

w^ o O

•: !t* i -'

~ irsr

j-te

lMc^J^lb

r.p-'i

^-V-

Js-^

T

i^g

*- MJ

O t

- W

e

3 a

jl u li

•t M ri f' H ir•^

Gsi P i

.|K

I !:-

J-fa

s.

. *c

-l *.j

H •i

'i

~.' f

-: :

v, r

.-, f

-s~

\,T

C

O

Ojft-O

**™

'^*^*'

! c; v

, r-

v: -

^ '•--

re o

u.-

Hr

c-- c

---.

li x l li l-s i f-

f*

i'

.

i'?'^

i*

, *

i( V

'

g- ^.•?-*.

C'J5 **

tlo

l:1 Fi- i !-. -

If Si:--

?JY

.H --

:,'v: ;"-'y,::,,:* ,:'.:.'^.-',\.-i Y

'';;^^'J.,-i;^rt\:'f.l: -,;.- ,-v: •-••••...•••Y- '" -.-"-••'•••-

''.r -^ rtV...r.r-:,'f.X 5s :- , ...- .-.'

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4*00 36*9f^ 115,19

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Votrl Ty.U,;'i'O'L',; J, !. V;i;U"''

-33*51*,'..' ioo.oo :;

:^ili t sat vn I 'lil-to 1:3, ;x^cs 126 ~ 13

circle, -was c.i July

s, in bia,

of

;.:-x:.or

o?5 Ib9 VO aa) ; V '

5a9r screen, . T

: - *

in

horlooretal ^

;.'ill

n;3 o' oro

as ivoisd below. : :

as i

st the ocweh rrvd*

' into tha. yotWalll jsrios^ to tha

, ' ^ ~~~'' V " '; - •••i.jxTv 1

' - '* ' ' ' *-* * '-'' \, . f.- ' '. - :; r :.-

at :

atxatt

ury-KdT? acroen is-

: 2' * 'V^ ' - ' '

-U/: ^11 l ./* -:^;-* 3 ryocwctlcn. j.a

- 49 ~ . ' -. ' ,.

X'i-.?,-.* •••r-i r.till s-sv^ve,,-- O'.ersifi-a wj*j stcrixl ,i.n Uv-;;.is^? to ba rec-usvitxl t-o iha 5*06-

Plili ibt* s^rii'idj un-itersizo ^3 stockpiled b-scou^ a Urlsil xun shcwerl {.hat t bo -

eoudU r&'l h-s.trilo ors vlvh such a 1-jrjiJ prs^ytion of - i - "

'-. Only en* ton or so oi" ws ^s*a sdiled durL?4t the oe.'xnid doj b^-xjsusa of ;

3:ffis}iaalcal ^failure o? iha ^3,-or screen* CoVcis^g tasto were mn on, lots &T ''.-- .-.' "--

aa attaapt to deterîs^ vhcthor s&ôetito eoneeoflratea or . ; -J.

;ilght by yiBcoversd.rroa a Otoarns belt separator iiwi \êtb62* .Y'

the tailing i^n thl3 jaacidne ndght to snsnablja to tyeatsxsrxt On thu Setheriil - V.

sovrarator* A susll-scala Croeksit test on a ^praV-*lot of slider. Jsatorial waa snxn .' '

fh^ rc3*dr.dfer"ef ths 'binflxl of OS's, plua tho sev^n^nre'rAlso l\*osi ths -.: r' v^ :

II r at 2;; tons, vâ d?7**dlleaii ia the rod ^111 and seyeens*! on

in elqssd cireoit tdfch a BalMttlcsg gyratoxy cruîeip* 'ihe.*30 a

lagited tad stored fcs? a toat-raa oa a 12*-itjc5i Jiall-JSprton.'dry-i^lt".''separator at; V- -

sird at both s&U. îoohftrgfr and screen throxjgbotili thia - '- ;

2UiB* ; -Apart fma tha ynsatdsf^ctoiy gmdsa of jro&fccl rcscovered ia^tho cobbing -/;'-f;

5j, of tJhich th* restidis ara t&bulatod, bQJcA-ij, la.dc of on Y- -'v'-;'"rV".."--*

's^stssi to prevent con'Undaatioa o? other ores unti^r -- Y - l .

ieut-fti'.UJ& D^pirtaletit, of Mima- dos^ndsd that. Uiw flowô^t be KodiSied* , -" ,";: , v - r ~

?-b t^sfcÂtio ea:spiiv9 war* taken dialing rjillingj U\s, - . \ : . . . ' . . '

v?,9 ttot follo^Rd p-ifft IJii* boXt. s&pâ-atoS". l?jty iidJL2.ir^ iias abaadoRwi in fa.

o C a viet circuit*. ," ; . ' '. . ' . ' ; ..

T^;t, ?h. S*

'ilia obr'ffct; war; to .fssd o? a Îrsoi^r to this vait lo rscovea* i;:;®- - - . o) . - .--- .

tifca In a Icv-iiitonaiiy fialu 0.2 r-'jpsro&d. pro-riausly ' fuiu then to ;

?.md i'@rro~aja,sj}cs.lan silicate i'ror; Vna - ;*oth*

with a Mgh-intsasit7; induced-i^ll oejarater such aa a Dinâ or S

tail*'

: . The, test tJas vfcolly uasfitisfafctory.' Sytn at a iesxi-]rat4* of 50 l&s* ' v;,"t

par hour th* "comer&rata pluggea ins bolt of-'the wothesdll

test :v^3 aVxindjned, no products a®re ra*3oyore4* ' .

' : v l-'-arlji'ar eijrjuir/ disclosed that 'the. li'CO-lb* lot of

trsy.tfed directlj' on the Wet'hsrill ^-ejiarator, but th^t a s^cus

r^da on 1 -a 'Steams cobber at low iiitenolty ana that, th9 StÂrs

v-3iliv^-; I'Jortf coventrated en tha ^sthorill iaaehii^J at: a.loH' 5*4.t?J oi*

the Ki*cKiV^t3 ela?jnea'.^nd x-eeleaned i^. railtijxlo ptisis^ss to recovofa

S ''."' :,'C^v': '.. '',: vf.-' .'"•-'~ •t-.-: -i"-

vias .-: •,-.','-

utî

ain-.^-.V',-1 '; " - ' - -- 'x ,-..tiiii* '".:"'/,-

7* stszoc'na C

30

TeatJ^,^ . . ** low int

Fo'eds .343 lte*: ;.

/ijr.pe'âô va^ aet cit the Biiftls

KAvuitaga assoiint ol1 ecjncentrats,.

v. -. - , - -- vuJy 6, 1955* , -'.rT,:" - ;'-. .." :"

??

^ a:-3port*.!i, with the splitter

'-a yôduots, - concenrlrtitc,

c,r.ct3 •wesxi ciirt,y| the*, concon

to cut tht*

iUj^ end : -

con-

t ho ::d--.dli{Uj: V.T\C

irwU a I;c-r:: a.;. o;\nt

A'll

6

^"li^d to tilin -.'.ad.

tett.or In iha pravicvss test.,, "but 'tay c

WSI-Q stall uruval is factory,, Ifc

î^

Cotter- tailings Oi" Toats Eto'** 6 and

o* 65

50 Ibis ?# •'I'he

to treat 123 1*03 ea n .singla pass* ' -

Coll'Kb O ' '' *4 ' "- - -- - i V - ~: -", :.-' ' . ** ' - ' -.

a - - *5 fs ^ ^^/^ f*^^•v<t*,,. AV W J~'.V \VibW*

/*t ' ' . . . ^5 , ' ) f2 3 "ft ^

j^pt; the

f 4*7

127*25

o? tha

tailing

less Ma

i bo

&jraiJ to

;M^d Vlth :' ':

i'ir•^3fc

of

?Test j'*^, 7? o

itd in the feo4 than i'cr tost Ib, 9y

'SiHl at S3 Ibo' per hova*, and A hic^ho

A;f0 cut UD An

the ;f,-;. ''::\-r.

apf)lis2U .;. :-,

;. ^niÎ I^ô sC 4*2 L-or ce^v. o'' tr o i^

5 7*^ '.'*:J ^ l^J vay-,3.

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1-. i t .-j -.it 5 6 --v .ii 9 -3^' ?0 esr c^ni, 'of the lr:.n u:ta raeo^rsU la t

ir-^ ;,oi;::erUl ttx^conU*:^!-.! that sr.^rycid -S0*7 vi vw.

rs isKibtflijii,, ih&ci t i -.3 co^potii^s yxvcxh,v:rlj u&rj^vki:

uXd agy?,/ &VJ ji '-'s m-,d 2*^ P^P^ contain 95 per

a Iran., but ?,I:x) .ii ^y osri

7, per cej^fi oi' riosdcsosipi rdxSflLlix^ pitxaici.3 ôulu rftcsyiyd i'ar&h-ejp t.

Xi'i U-i-vtu ? îxi ICj, 9? pa** coat etf tivi ir'oA cai-i 19 .per cstit ot tlw ;

â^d in fche- S

r. apatite to n prrxUicts t-sas hi^^S' ia'

(^1 To r

t'fcsis- so

visa oaly 73

lt^ apatite- c^Ktoit of tha crs tastd i^r these tests

than av&rage, 61^ to iiacolanco of tha dlllia

riws of apatite In fesw tailiAga vsurs p r than r,4?ht b*

r**' ths s

Ilot oT ™20 K

j^xsa on ih

*- The results

vdth that oVfcaiRcdi in tJi6 aibovo djy toots, a 2^-lb. - ^ :

ciit 3 PoH.'^ Jal^ 5, .tsto concerttratod la a : Vi:

n TaiiL&.&J* 10,••••. - "j-*.:. ;

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v, ;'l ; ; --':'iet. j 695*0 ..; tail, l- . 316.01l - - '- j. XOn.O;

,: -.•-.:- . -.-- .. .-' .-. ..- . -f.'~ , . . ,. - . -- .-'V ' ' . ' ' 'r . .' * ' ' . . -.. ' - '' S ?

' > -' '-~X"i-'*i'C2jLiJ ursckott Ye^fh* 510*;. ' ' ; . v'..-,. . •••' .

:".' vfw^ ,". "' 'Aae^s ?i ;'- F® Ô'r "-

* " "

6B.74 65.90- *91. vj ^ f f i ^î1* O *^ O K

100.CO- 46.7 11.64 -i

• ••. -' ' . ': J. ". ."-- - '- ".- ;- ;'^" ..-- •••-••' '"- ' ~~"'f''.f~-'~'n: ~-* *- - - . . '- ^ i - ' ' *v * - ' ' - " -- - ' . "*-

' ' i' ' - T" '* T- ' *t* ' " i '' ~ ^ ' " - *"" '^. - ' "' ••-. - ' .-' '" ' - - ' '; - -' - ' '. 'y'*.'"

-. - - - ; . - . - . -. ... '-....-. . - . -;;;' - ' lilst^dbution ^ . . :, '^ X",..?.Fo ";. -; . - ?^)c -. . •.,..'-"-'\-;' '-;v

-' : - ''- "- : ' , ''-'' '- - - i'~ : ' ' ''-

9?ol j . 5.4 - ; . .-. .--"2 V9 -' " : - -94*6 - ' " - , ' •-~-

-..,: - ;- - ^ .: ^-'. ;. . - . ;. "- - ..-.-•' " ;. : : : -,-

tail*

'aitf t#u? hijjaer, even fror.x

nr; v*3 jvbanibcswl in ^rô

circidi

'ikz cualiiy ol .the fir*al ôs~ss|?seiic t-ailirg frcsi tfcb-stage, 'd^-^xjlt.iajigwstie " v^^

sopsr-j tiers in ihâe tests? vaa oxeaLXentj a?xi.t^ ludicatod recxsvejCT1 of apatite ''l'-^/^

'i&a of the gx,^ oniar KS "in" a table psrodact ^dth alX sdxssa discarded/Jnst the* :^" ;'.:r

f;ratl-S! or oro 'iif:*5d for fcheso t(?3t3 tv3.;3 e-bnor^lly high .00 posr cent apatito) anS. x ;Vv'. -

rvtili rereinsd the prcbiaa of cls^ning t!^ rs?.^®tlte Ir/ toot^-tpeatiieafc, . ^ -f;

i,ite eorwantr^teo a^;3o.7tH3 iibc-ut' 3/S PpOrs Isiêly the yapuli; o? coTXtaja.lK&wlon.•'^,-"^

IjX apatite sliissy find t^.a gn!.d*3 of the sxltldXii^g pn?ifeicv.3 wttx*e siich that noite o?'-."s

these jKrsotions. coi^ld bs ed;. ts-aaiasjst of tlj^js t*ov\ld

;':; Operation oi1

of LToat of tho

tosis 3^0 isot 'of

and at; fo®d* '' : Kokilts of ''.y?.'*"

In- this rapoart, ao ali;prahibt0 ^^r

of.

sdll oJt any of several

3 tho' -

-

ii colic csfc the f ;. "7. m a

dust 'o? ths fiillins v.nlt^ a duat-wllocting t^tc-n ^-jlci otill ba riqtdr&d for V': : . -;

tho ro^t of tha cda'cuit^ At bo;st tf a Cdsidnaiieri of tjsfe-scd-cxy treatsent ^vtjvibd V".::'r *7^ t'ld - ""'

.ff;;;'UV:!!L:^^^^ ' - :

iVhen fi33^-3 of i'.h4) spU^l toilinc or i-1'.UXlun 2Jo. l .vt-'vo.ileii that this

^.c t vontairard 4*1 -x-i- ec-ryt o-" soid-solubl* ijsn arid c;:.ILy 33 JPf-~ eenSi ?,,0-. . . . ** .?* .

entire loi i-ss dried on a sirdnXeoa-sttseX bsdt .dryer anci a cut or 360 iba of :

dried prctJuot rU'Hocl •Cru.a it Tor a txi?.l r-avon c .6-inch,, 3-s^H. E^alon

•ile suit s war® - *' At tho sinisHsa Jfifaperag* of tha isachina

h-vb oxidised charing tlrjdng so t?2^t. tlao apatite tsaa coated with aa iron oiddo .;,-^' ' " '

t. Ih o? an large proportion ot tbi foeck ia v:-;V

Thss results oiv the irjost test, K6* 23b5 ai ninirasa

Product*. Assays

*"':';*

Mag* Conct* 64*^4

x ICoIoo 3-0137*06 32.32

^ calculated froja assays of

Boeattse the ere for J!;lll"L\;n 3.9 w-is cElutsd t^/ trawp rode ar4

it :,M-;; milled to oaly 20 irio^'i, t ho tnbla ^a'ocict contained fi. large proportion of

co.vr:;^ .-jas.^*, chic'Ily d Ilcatsa* A tUysi ox this lov-gi-aue *iy.'Atito

•..-•'.;; vLi.. ; d ovi tho ur,:v!::il5j;53 stsel l#It d;^

c^;-ri.r-*.cr

the IS-lnsb, 2-vol

froa tho idudl*

rau '.x-lv/:.* raLUs voxx* ecî-ned aryi aLo^:vil r.sico r.t the s^;-

i-'^Kxi-rabaj i550 Xbsu par bs^* (aJU5 1000 Ibn. cor hi'o

The

•85 . . - '-

5 (xsixLs&aj yssqcivod lo obtain cl?ar

on tba DoiLafce* tshla GO that the jaS

3d noaXiglbla oxidation on the drycr In contrast to that used j&r til© -- -i

tests*-.; . ' . '. ' ..-.. - .' ' '. - , -. ' v: '- -:"-.. m .. - ' v/-"-^;

Tha results are given IR *iibla Ho* 11.. . . ' "- -r r/-.' ' , : ?

fhs coîn^d c.l'dî^6S'-pAUs-i^f)Ujjher'*t*vilait a^J'o^tlKg tv-*/*. per cent of

tlie separator ê-ad? or 12,5 p*;r cant of th^ oro^ .isc^y&d 39.2 ^ ?pOg -' " ' ~-

(2^,6/i B*PaL*) Awe. coritcdned SO psr cont ojt tba jshosphorua id the iVaction^ but

this aaovmtcti to only 50 i^r oant o^ the total phosîwrjs* in tho oro* .: "-' ;- ;

' Mono oi' tho iiin.?.o concentrates v®9 low orsougzi in apatite to be dls- v

? a!ll vjould reîra rewcrkis^* 'itio hi4;h gangue content of thes^ pjroduct^

tho ittcoa^&etfc' liTsa^tion of jxpalite i*r-5* silicates at this coarse-gariad"

feisa the poor* clasîllcation of tdlicat^ grains f rota apatito en a table* A.x' r v

"•'-•lha teat did sho* tlait tJ* lcW-gr?i68( tabla cttxlaet of HUl-lvun 19

could be up-gratiod ty a high-intensity eepafator, tmd it la Xikoly th&t tlds ";

wmid hold trus ibr low~g?ade apatito corxCSfnts^.tes gyr.era)X7' fi'oa tills ore, fcui

tho msacesa 6? tho treats&rtfc v**as due iargftly to the prjjor rer^&yal of sline and.;

or or-vlfliaablc iror^ceaxli-iS idnarals* In vi^v; of t'r.e estiva' stoâ arxl t?ô coaia

iit'.yl-jcd, i':la :~v--t?:c'l ex" tre;iU'.or.t is not rfrcoT^WKl

H-J&SSLLJ&ISi^^'i Distribution f*

S Fraction , Orewsal To ' S3 f J- ''K

3t.*T'o!I Canst. -' . 1**CLConufc. ?.SL'.' 1*20- "? S3

vJUl^olX 01oC*n'uiUI9*52 : 3.&J jllll1.19 28,33 r,d

J A 1C ' f*\S ^1 fi t~ .J .rA

o i /r "ii iicO P*r*fr. ; -17.4.••••7&.S5 i

6*94

^5i5u a ' 1CO B 00 lg*C^ ! .97 , 31.VU - l - :^*^* '.; - .,X,. Combined-tails'H"" 66*37 1S.51 i^^7. 39-16- .: - - | 2C*0 ;- 79.99 ;-;:^.9| -.v:,x /v,^

jsi sa JUisida* aftftr leach in cold 10,3 nitxdc acid

-.-'••rfV'-l

v*; c, a--

u^rc ixoc

of this ova

. .

^^-sss on ft 425-Xb t lot of tijUnorii-virni coi*e (4) H

ied .tor tbs rssovc-sy of s. petite fro;?: the n^-tasê-

A uplral ttas ii^liw.ixi in 'tis? i'ivsfc Wil-ttii*cuit; Ss in

Fo^r

(n)

-(b) i^m-

to t-t-st tha ftircuitj 14

(c) mil-Jam Ho. -a;.-'.-

M-fes-ratlon oi' ssagjietito v

so4itaiiutv2 10 pus-

sat^d le?.9 by

XlXt--*** * ^ vXOTl 0^- i—ii-fc*"SV wV ^Hk *

'aetos-y at 26

26

ojaetory at 14 j^sli-or-

of ~2CO r.ieâ sntori&X .assayed 0*75^

than at Uner ^ritKla. ,- *'.

gritsi^ but.

at 1& ri

oltJôugh the proportion 0* sllcss -

- dossificatloa of apatites |"roa gangue ias iriComtOU6Ur ia all '.

'as 'not. s*! In'îbXs **o* X^'ia the maaaaiy fol2xftfir?g iSUl-îUi Ko, 3^ honee l^.

Knstjfcrey spiral was 'ret&aefcd.lsgra Ho. 1/j. Dcdatsr taelss foa*

The ejiral-jôdtiiisto v,-*i*tt-also tablcKi, in Mli-^jas SK*,a 6^ 7

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,V-j.ttfvi'jr to wi,V*v.!ii:; 65 - 7- /i '•xliiis in S'cd i.-rl'U.*

•x .'vi v.sêii fcsd (liucktit, olava/icx* di^d;?^^} to diliit-a

this p-ilp to a^x-.ut, 25^ selies *;ss Hccfri Kfcj-ûtîv

~ at E as

13 .

P.slt spî

: ifeg* conct*

on/ -. " - l:-^'^,

6 sots we?e taksn. across tto circuit,. at tho

in tha ss;ajlir4g @ch^^Q.o on tli-s xxaxt page* AU

separately to follow thy tAabillaatioa of t'-sa cirtativ.' - " " * . .~ ' ' ' - - - ^

Cuts 1*1*0 t?4;e7i at 15n^

srvA Rat^j ea notwi in

grab aaaâ '^2-0 oollasted *^s 3fv:quii**d for

in

then

t^dl* - drlod^ part used '.'" ' ' '" ''

Solids

barbed out 5.r; one

placed by a Dor

urJ.t v;as turbylotit

so rapidly ia the uid .

i rdd-aJftoxTisoa oi"'July 15

r^night xv-^ claaaifici- ?b*'CA*SS79

theroby Incr-aasdns l-5^cfta in

cLrwit vr^r, bypus-ssd saa

action of this

so Jto? th* last

c? 'Oil;/ 15 a

rj o ve rsi:* a Increased ra;:;UU.y with iho x**iiuoe*l rod 3-cad untdl. by

bottt 50 p.: r cent of ':h^ s-^svssa frr-xl was over^vse^ attd iha rod

;idfcd jicoordi:v,iy. . Aalivicn of /,U? leo* of roco corrostoa tods, '

tfrid of tra -^-^7 iht* a^smt of'syrsen avsrslso •aa 3 artain

•f y,,

Tho taat ivus iersdrsatscl at, 3*45 PH vhon a break was tiiaeovwxi in

rn cloth. - ' . : ' -- . ' -'", -- ' .•.-•-•.'''--

V-r^tl* Sêduli mi

location

/fcr^ wewdze - }

Itoeha tailing-.- '-' . ' p- ' . t

Koehe conct. to 8eior*0.

BcwwIoRd ol. const . .1 . , ^ , ^ ^ '

Sjdrftl : cosset. -'

Spiral tailing*'-- : !,-:;.

^d;'thkr"o'JCUHfr - .:V ;• - .' . ' ' /. -' j . - ' ' ; '13.d, class's* o ! .tlow.

Sp- toil thkr* o'iUow*

Uorrclone o 'flow*

Seyoen McrcdE* ^ ' V

Itocho" felling

lid. înd Kin ciii;ch

I'orrslow ci. eoî.;*. J -*j Vj .^C"iV*'/*

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-: .: .afiO-'-. " 1?*S ' r 4*10. 33.00/-V-;,):; ;r'-— -:-; :". : ' V :. fy*b '^'~ ;-^^v ' ,. 350. .'K -' : 2.9 -- ..'-''"'.^.V /^''^'^::;: '':'iC'-v-^: ::' :'"'^''l

'-.'.-•'i

of

••. ..- .- • •'..••: ii \:-----pirsOL a-^sd,loble JTor test-wox-k -was Imdeguate* -^v;'--.;"; -.'v;^ -'••-i-;, - ' ' ' - ' .' "-' ; ' i, . ' ' V - f ' '.. * ' ~- 't -. ~" '- :" - * -* *"' '' ' ' . . ** V * . .- \ ' ." s*. ' ^ "' ~ -'

of tho spiral -y** orrriti* In spit© of ofitarts" to ::

at^ os' fasd asid tho '-soliaa of wster to, it* Clagsificaticn-' ' . . ; C-' . ;-"- "' .- - ' ' ' : ; ' '-- ••.•'.:". " : ' -,'' ; -:- ' v '' -'' '"''•;. - '"'^ bAtt^xy of serais, to 'provide r&iilti-stas.o'••-! --.:' '•••'t,ha ona sp

, ' ' ' . : -,

iron in the raamtlt® cohf?entrixt6 \-jaa. ';-.. ; -,-- -,- ,. . . . .

th&t 99 i-®* 1 e*!nt of toe magnet '.ta in th*t ora*: Tnia ccne^fttrata ;-\:

riiroinej to lcw^r tho'; jô8|45catta eofltsnt tp the desired laval -^ -; ;

than 0*1 p#r cent* ' ' - - :' - ' ''- - -. '

ie tail thickener overriows oontaiiiedl blaskd asitl- ' h':"

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pzrposo ox' this t^si toa 'to etetawdnft v&'rthfci* tclû^ libs^tlon o? apatite

---- v:uip.;^ EsUjhfc b-5 effssteU at 26 i;*) ah than at 20 r^sk, trvi wtether Kxtla- '.

^cry acalile eenwrvtr^.; xi:;ht vs raecvarcii ia 3 spi;-cxl talllr^ at this ;-riud*

7he ilc.v±.cot '.*is the ci-ve-.aa foi* I-ilil-i^n Ko. X cjxoapt us i'ollcva i *-

(l) '26 2fs*8'o sci-asn in^teatl o? 20 E

(2) in a "" x 9*

irierj overi'lc/^ to tank and thon.cs to

axii tilractly to 24*' Hardljgjs conical nill i'or

. Sai^lo-sf-litiver peseta .f&sa 2nd* hrir of I'irot e-'arloiid, 10,^0

plus .1200 Ibft. res©3îng in bin fro* i-aai-.^n Is t^stel 31,200 Ibs* ;. v:"^:;

-.•;..v of 50

load: 1675 Ibs*

f rims 6

too

rates o go 3.750

: 30" x 60'' Ih

As in- Mi

-- As in .'dl-Ksuj Ko.

As .In Mlll-în '?to. l, -., "

i" 3 seis, at AMj X.30PMJ

In. larks; pilod,

\SiiS3i- yi :^r^:'-9S?, JÂT^lVr^-^VÂ. -L__,

f V -T nt-n4 ^j-)}-?--.*-, !* ^•i.Ô'i.j.-*Ul-AH^t*

'V.O.. i'e

Hr-!"i rj i*.? '"i i?'i ("o ir^ ri ^^^ Ai.V^w'if . liêw jAJovJ .f.V/'-pV ^s-VV/.s^'1 ** /, l tt 1 f vy"i ' i" i ** ' *J 1-/j,*p 1/i^.o A*u.i yo*^ Yo*i

A ^ ii To r;O r,n T t "fJ ^!Jo^ y o'-'f .-i'-ov,/ JLO ; J-/0*-

3*0 ' 3.^*1 2oe2i) ' . o9 . QoO

..•";:;. 1 't?ho liochs sepas'atos' vast loaded to capacity during rswsVo? th&a sun,

heavily overloaded at a i'esd-yate oi* 3.350-Ibs. perhcusV She-eotic*w*~

vsxa infefflcdfsatiy'viashcdi oh the cxlâne2*"btD.tj,'arid - contained tsore'agatit* ,:

silica than, in, the ps-evioua test*-.' Much oX" tha apatite in the I&trslona eleanor- .'.. - - -. ' - : - -. . ' . -- - - - '. .; - . ' . -' ' i. • ••'- , .. - . ; ~

cojioefttâte apps}ii*ed -to bo fvov uJlrae -entradt^ti wochaaioallj,1'* ^ Thd Dcrrdoiis ss^—

jiiovsd only a' scaH a^'.vat o? tM.3 oXliao, yhich settled esXowJy. in tho ixwsk in'&o' : -- - ; ' ' -" ' " '.'". ' ' ' - - -- - '' "' , '. i- - : .-' V v ." i.; " 'v '- ' - . -

•îlch tho. tJorrdon* (jonc'afitraie .^^3 ^celv&d* kiringi'the run tê: t^rrjAorie ncrs- ;

tiiv^rt^d to a i)orj? r-akss classifies* jTor. aa houy or eo^'. : ',Sh5.o xuiit "-K ' -c : ' ••-.I-. ' .- ' ' ' .

apatii© aj^zt/a ia&ra efficiently than 'the Xferrclotta;:'th6"'oy8rilew

he aassa as from tlsa mid, claofdSiero ; •'•-..".;:.-v.'^ -, ; "'L:r : V/-^-

, -Tne sxid load vast toa h*a-^y for the rab^ of .foed teaintedned

this sun* So?sea ov^rsi^d decrâse4 fms o.bout 25 par cettt:of the stamen foed J

at tha start of -the itsn tp alraost nil at thft endf so that tho averago

siae ci' the 's#pyntoj*-!teed waa'^cfisiller- then typr.cal Tor this ir

UTiis tsao'ysfioftbed irs i\ grejitw csj7y*ovdi" of apatite sUose in tho

cori06*atyate AES noted. \ .- . . - . . ' - .\ -. -'. ': ': '' ; ' ' v-'^' ' ' ~ - " ' *n,' "

Liberation or apatito v?as better tvl this f,rlnci tlîn at 20 ii

oL".^3.i'J.c.îvi'i i;i ths J'ai^hrsy s;; ira'i. v^s -jtil-l ir;sriJîo:Ac. 7h3 ftpatite con~

fen-, of t-;?. f;p;lr-il taU, \-:;ia hi:êjr tl-.wi fj^n tte wjvioxis rao,, bit the rc-aiito

c-'nii:)'::, 07." thv oro -cjâ cCUiu hi-jhcri, Yiio iiv*it:at.-j'A rcttcivory oT npaLlta in thin

^.•ou'-.'C't uua ;ir,:??:c- svti l.-*r.-3 to otivol ccAflftmivxlu girjn.tgi- thnu ut 20-^s?*i;i jirund

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.overuse -inciojased yagddly idth tho r&fewjed sxd cha^g^ Taxca . -^/r

3.03 per houy^t-tiift-'tttayti'to KOTO thwi ^) ]per ecjjt of ths ; sere w Ifcsd t?f ;- "' "'v

Hi v,:hen tJê rotl charga waa increased to 15^103* 2be screen, ovwwlxo avo2V.;..:,:V ;-

^-ofi about 1ACO Iba per lio\iX* ov&r tVsa jcun, oo thai tha rdlXv-iSas overloaded, and ^; 't;'

to ciOiU- It. lietwiao o* ' "

r**** l -•••y*

lJS^^S^J2^J22!S^

Assays ~ .'IXrl-Spl

43,370100*0 67.5 7.9'

tail*-210 -* M i* i

45.4

3.00. 15.1

1*6.35.20--

of ths kisJHJjcxsrauo afo'fuseu i*or this run tbt* apatite content of

h-aiX was considerably higher than in'previous ru^* Ths chiral' tail; of

L~Hun KC-. 2 la pj^bs&ly snora representative of the product "of averago ore* .1 ' i ' *. ' - '' ' ' .' ' ' - - -, * - ' - ' . ' -' - - . - '' * ' * ,. ". ;" '.-*t~

' " ' . . ' '' ' ' ' ' ' ' ' ' ' " ' ' . '* ' ' " " ' - " "' .. ". -' "T- -. ' \' ' ' ~ ' . * -'' ' ^ '

'Ihe•"iron cont^jt oi* ti^' opirol taillrg v'as nwixjcad vdth finer griaiitg o? tHe"--

ore, but the xxJcsulta'.'Msa'd not tlsniilcaai Ijecmsa^ ot* variations in grzwie of

03rd tested. Ali spiral tailings 'fe4 Vagh iron coafeeaVs, and the

tt-nwa of all'srpisral. cotjccflfitrat^s v^s-a hi^* :.Aa noted previously^

ning 3n a fcattcsy of spii*als id^ht oitect jjaixi'rucox'&isr. in

va.ox-ft of a^yags grade^ bat no each batteryâ availablcr for

there isaaj InaiitfiedsiMt tissa to c3,ee*i thfr spirolriMfdûcta "batîdso la th*';V

oê spiral*: -.v.-. •••'•;'v.. : :": -V'fv : '^ v ^-. : ;^-;r . : " '/.•. : ':"':; . :^^^'-:'-;^l^::v-\-!','l ;^-'V':?;^

. v : . : 2hfc' gratte or tha' s^ghefcite coacentmt^ t*as ixvt aiTectwi approoioblj

J^'chRngi^ the' jeesb-stf grinji fs-oia 20 to 2ij tho prtAêa'is'io 0f;tcct rsscovexy.

'of arat-it© in high-ga^ti* pnx^vcta* I^Tultd of Mll-Bwna JJ&.'s l^:2;and 3 are'~:^

sn&rsdned a

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Alt'wij-vi ti.o rr-ado of the oVs v^loci coasi&jrsbXy in U.e thx-sa adH-snaa,

live avorae© oi* the lots a^rosd fair^ vail xlth the :Kad~isiii^ of the e:irls*aii,,

Tue fivera.^ EJSsi:-or-^rlridL for tV.o throe rana vrculd.b* apprrodx-atuiy 24} tha' ra--./'

traits of tabling tost s suggest that this fjzinei -would b-; catisfaatory, saa that .

w*s night *s^poet to reoover aV/out 75 por cont o! tho apatit-s in a'dâltêd, tablo.'-. . . - i - . -. ' - -- - *.. ,. .- - i. -

p2*od\tct assaying 1*6^ ada-SoIuW.'S Fa asxi 35*^ **J5r thftt . Ufeuli laeet'thft sp^ftifl* ..' -- ' . ' -: - ' - : ' ' -- . .' '-" . ^ -- ' " ' "- ' . .'-- ' - ' ' - .. ' :'-''-'

cation sett; tor this ' test-raa* A loss of shrcfc' 1C per cent ol.tha '.total ape*tito . ---

ssay bs svif feared is ths tebl© slir..*, and fiU"th®r work is. iiidicuteti to stance this v

'iTis' driod sp

to a l|"

tabl9 (lia* 9

T Itill-T-Su; lio*

tuil of ;.Hll-4v

to a 'iV*

at C

eixl of tho- table

(b) Tha :daap' spiral eenesnkrate o* JSll-Jiun

esbov* the f otsd i

atenfc per-jfed txiraialJy to tô

tabled ea ia (a)* :- . ~

'•all-nun

o? (a) -sjid (b) wro velîhod anil assayod

snbiasd as the rocoverod ^ftttit

l. The-, spiral e.3rjceifitvato -was ali,ra?j-fivo^ bsat that spiral tcxiX

pro^rtion of sliw, iird a ;;.tf!er cut siiouiiM h'ivd be/si r

t j -rî it a^rf-vy? a t!'

ont fjtora^ in

Assays ~ ^ •Cl*col ^ p

Fraction .

223 26*2

lo 33 150.2430

27.0090,1

3.3.:,'

The? total, distribution of prcxiuet;? frouthe oro of Hill-Hun So* l HIS

f.vrm ihe.results of Jdl-Iiano *J*.u l aisi 6, am stiasariaeo.ia.tabla no. 21, ; in :-

t&i'eh It is coi^*red with, racoveaj Xroa'MUl-Rana lio.3 2 and 3* P^gO 6S* ; ' •',; j,

•V 1:-"••••'..-.••A;.''!-.-.-':V: :j'H-i;'

? . y '-. !V

-*. ^ ' -. ' ' -,-^ -: - :-,. -"-.V-,-"'-." V ,-/.' - - * - i^.'.Ts,

•- "'" ' * - --'.''.-- v ^^'"^*. " ' '-". ' : - . ' .'i. ; l

.Tho oase -xl vas fed ;ra.axuiJJ.y to a i' DtSiTSjf uaral pu?jp fei* .

tablâ,, 5.3 in Kill -i i.^ 6 (b)* The i'c-f.sl aoniairwd a

l ol alii^?, her-cc no ali:~o taiiiiv; via ss rejec&eti Sâ

t-^ble

i^>e•• >

i*uamed sad wei-i

ycd,^'i©d a. cd pipo—s&apl^ a^ji t,vK?ri

of Mill^-â 6 ôr.iTitrtJiesr tsat-w?-kv

^ti apatilo*- pll^cl to drain,

with It."- - . .'-. - ."". ' '. -.', ''-; -.'

is InoLiidftd in suai'A27 of I'ill- s' 12*

Rougher— - - table coucfc* V(filter

tank

'.'65Ijx/i CO

Total :

•••.-.•-•'.3

26,5

-100.0.

•* Ibs,*7

0 1

i, {'i..U0 Viv

n.;3;•2*36

JSgs^^B^^S^W^^ ' "' ' *~^"~^"-^-*~''^f"'^~'-"*^-''-"-~~^-"^-^.f^^^

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pus ps^

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t; cvJ ^"X-f-"' ^'"A'/ '-

rss e,? coiabinua spiral tails G? ^-dll-jcu^s 2 and 3* ,-

A 2*150-1*0* lot of this ratsrial was i'sd Iron a bolt fewJw to

t-vxs-sia.'ie pulping in J.i^ver ptops and then tabled on the Eois

assded to iha

^e puljxL.ng to \)realc thetwo-;

oxidised Iron~sdj7eral3 contained csdcfly in the elics* fraction of

tha foed*. A 6-inch band of roushar-ooncectrate v®.s taken to

a clea^-defined 1-inch baud of heavy eineraU, .rostiy finely . ^ - v .-vs

divided Kjrrrhotite, and a 3-inch baud of isickiliRs,.-; 4\ id.do.'cat Of : :'v '\"/^" ; ; ' : -- ' ,." ' ' "'•••- " " --.-' -...-:'v--;-'-'. ' '- .'V-/.'; ''"'V." i

i tailing was rejeclad. ^le weight of the

70 per cent, in

6? plus cleajiej* mid-plus-sand .tail, i filtered to

3* -Dorrco filter/ drummed, weighed, .sampled and assayed •.'..

Sllaa , -discarded; timed grabs cut hourly 'during the run and

coaposit^ti for wen. ghfc and assay, , -.;- :' "'. ' - - : '--. ' ^^-'-- / ''.v- " - '

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KL-.y^bo^*: .As ia liHi-.'ûn ?'o* 3 tccsept t.hai 2;.'-rrs5.nh ucs^*?n wo.3 tts^d"en tiio '. . " ;

l-'irln? this ohort ruî tho iroarclo-^- wa-s re:;ovtxl .frorj the circîit 3,3 ;; '-': '

V t. . , . . \t\ * i ' "^ f î j4 v. ^. ~*1*. *V-f J T "? mf\ • •••wîi'J'* "**i':'l l *y '" '''S *~*-** *^ ''t^ *^5^*s y*v *T *" ** 1"^?* r f rt ^*-?i"*'^ "' l*f f*V* f\ T ** fl.Si V** y**V *- t'i t,^ff JLi- t.* - f**?*!-!* V**4 i/V/ U^X*'--J.'-A-w* J^*v*M ^-U# * V*, ViJAf i ;WJ^*-*^*^ tW"^W VJt.. Aj^JsJ i tfii

" ' ' - ' ' ' " - " . - . . .;-* * .

•itr,?.te *^.;t sent dii-*ota.y to ti*e tors* rake ciassririQX* Tor

ciiaearding Trss i^gnetito ia tho overflew and not rejectitt^ thd,. :: :. ;.^-

entndnstl in the Ho cho predict, wheraao tho Dorr classifitjr.

a las'ga proportion o? this.Jinpieiity*. 11^3 liayr txlassifior o

asa vdth or without.- 1 h-* Dorrclons-" ia th^ circuit., ~ light ,63^wry -'faititly;:.' ;A"/;?- - '" '. -' - - ' .' ' '- -' - - '•""••- - '"-'" - - '• :'""- •- i- ' :: V :iurMtS -v*ith arctite. 3lii^s> 'bat cairsying;' -. . '."- -- * ;, .,' v"',- ' ' ,- '' " ;.-'.'-. :-- Feed* 5/S5' f^re^mj procia

of rani 4 IT? s t ^ ... ...

^d 5^*3rs^darx c;uo-to' ' '' '

rs ai*d of tho Kcclw' ''- ' - '' '

K^nsiite^ — ovta of Dorr classifier.saral. taken at 15-jtairaite''-- : /"-, ;r:T'-;': ;; ;i:

iatfervsl^ and cor^caltcd for. screen a^d ascay*- 5^;;^;:'^^^:^^.);''^^^'-:.^^.^:^^-^Q* Porreb ^Llter calto oJf. tablo product* - : " " ' "" ' - '- '-•"' -'•'-"7b!l

Psxsciueta: ^gra?titji, *.piled with mg1* conct. of /ill-Jsuns 3',w ^5*" : ;.-- ^', ':-A; - ..:""'"/;\ ;M-.-.i-rt-.i.-..^-!—~- - : . - ; . ^. .. ^ ^ -'-'-;.-'-.v ^-'.'i.-: r'-' ! '"-' •'•';''' .r."'.-: '.^"' p -^''.rX

for 335^}:i.:ns 6/7 fi-'s. - ' .' - - '.",/; ^'.'' •'•'/V'. :" v

ses of ;

(K*

ore 6*91

Ct

rvtH'Son

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lf,.r1^ "^"

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,- "''

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of ru::: 10 h r tt j 15 i:dn*

13 ~

to to ,.At A-od roll foeci and

KEdttUdst 60 - ?C'S solids; in K .

At laxckei olevnt-or ixiacbarê to aor^n, to :diluto pulp- to

iS)H.â iu Roche fcî. Jlc*' lister addod ai tdll discbrorgs 'to/cdflvatoy*''.-./.

At rêbe ssparntor asai ' at :sid. . re^risd tsl'ii dlschaLrg*? as reoiir*d*' v- '

: (a) "g^d ^grgba* J'.v-2 sstt? across the circuit, 11*3CAH an*i 6" ' KV"";' ;. ;

each for solids^ sera-sn and assay, aa noted bslow In.eayanarj' of

(b) ]3^y^JS122ii!ii

Cats at 15-rin a/or'B^rrv'V^:;-3-,";' - -- ' .' ri* - ' - -' ' -" ' '.

sand, conponkifce^ for -screen sncl assay* : .- :,.'-.;-.- . :',..- "- :;

" filter cako of table p-ociuctj iôyol-cuta as.'^

ssîffiOiod 3ept* 13/55*';-:'-'' ^^"^.^^--/^^^'v/^^'^'vi:

(c) Klj^Hav*ay.s3. grabs aa insqaiswd fter .control*'.'"-':.-:, ?,:f:r ; ; *'::,; ^:::v.-r''~. '. . - . . - . -. - . - ' - : - ' .. ' . -. - ' ~. . ' - : \''.---- ' -' ' -: "-'-".'-'.S' Tl^'-"-

•. . . ' , - - - ' .' ' . -. - - -. -. t.-.*.- ' ' - Y; - - .; i-"-*f j^ygitite^gl^^net* Piled, unfilterod^ oa gxrounti flees* of irfLll -vy...;

i^.diR,^ by belt' dryer. '.. : ' ; ^ .-' ,' ." '.- -,- -- :-"•^'/•V/ ;"'. ! "-'A--' : V^.

tesiiS*'' r*)I'rco JK.3AW wi* of toble-product;-'iiitoitd

, wâ.^;^., .stockpiled

ss (t - 9 for j^tsbUrô

"-.'.Vv—

T'"i ri T*-V *~ *' -1"'" *~|4 ^•^'••^ JT1 ^^t* ^f\ *****-1 ^t}^** 'f ^**T t;j~'A Ixi V '*i**ii -S- -" J v-XHjitA* vW j..',i viW* V t-i

Tr.3 :Ceiid~jt7

i^d vilihln ".-.iu:; ll^.vatc^ A r si losses rsTjî S7ii.";.-i,;.a at pla::^s^ l^nnicreJ DÛ

tn i'Hii-o high* ^10 rddvîic^ oirc:dh uas overicaiad; at ui-rtfs t^ ali^rt or

?ddd34.ft!.: ;^f* one and oRs-4-wif iiajd that or tho olewtE^cortctmtrato, so that

lio'ihe rc-a^hsr^cir^nlt waa ovii2\loatiod''s.c*crc 1155X7* ^lack-.txslto.'on tt*^ Euch*

-cfatcr eont^lbyit-eU to s&nsging., p^Z'iiciilajr^^ ozi ih* roxiga^r-belt, so

• Hvsj-assr BCJttpen brake, thirty,-reuiicing'the efficiency of s&roeniag so that .the :'.V: : ';

high oirculatir^ load ^.atlse caliing-clrcuit cjuniod a l&rse proportion of wrwi&x'* v

•aiil tsas cvs^loacfi4 ^nd tha r^cho fewi uas overg2t*usd. Sorsercs "," ''L

aiiivi "IJKtts^ co^Jitiona ars Incltxlwl In table Kx?* S3* ' ."' ..v

os danlicato crutg of ths uruisawd a)3siiit0 -u^re zêpCBrtsdl aa * ;. ' ^ i

Total V

-:,77*7 EH* ,:i .

k Ltd*

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•the

roecv^red to date* .

osddatd-on of the s^raiiotifc* yenderod satisfaotosgr rtiscoversr of apatite Jfroa

jbe3s-oojic2?;t215ata inpossiblo,-' henae ^y -"'tjalcwl&ted raoovo^-'â aboT!?^ ii

to 3,5rgs jssaaups ol" error, and is irxiioattvo o? tro?)^ oiily* 3'n tho

ro&jci of (b) 91 vx?r cent of thci apatite vas vcjcovsi*eti^ so. that.about

Ibs* of PÔr, contained in abptxt SCO Ibs of cieanos^concefetrat^ ssgr bo c

the, potential, loss jfroa all csr^ 'treated to date, or tecawcUaattjly 0*6 per

the total phospiionia* Similarly this product i;diît^^ contain about 1*0 per cent of

tho totttl acd^-30iablfc iroa* In phort, rouêrîonesntratoa ray be stabled to-'-i

r."fst*a thiea asost of the apatite^ but th^ cleaning-*stop fôold be jxurti of - '

Av/â 29 -

tic coiwsnli-atioa of cUy-riill^d o re; taMinv. of xinolaasd- " N

tolling. . ' ". ' ' . ' " --' ;

ion let ci" *x30 i;-ash on? of first e.- :.rle?-d, dr^-:sdiltsU .ir^di bisg-god

6 *" 10, and pr^rurbd crirjl^lly fc-i* EoXl-I&i'Sori wjy-belt to.si at'

jfort' and flia/dusi Xd:;di.*xi., aa noted iri pisea'49 •owi.55* Kwt tost

sba?ifbned sits*- ^dsttuosAon wi-th Br, Znslo of ^1*1* T*, henco thet. p

io recover the sajgDCftito Aî asatiio-' f rent th** ora/'grid to cowp

. of T*5t*^.V3 Ujy-ssllliag on gsrace czid i'sccvoxy of-

or^ ITSIS fe?d fs*?3i a d^--belt 1^0^-31* io tiuo-atago .

thenco to tha Boehe •sej)ai'ator|- tha rojûlar ^3.owGh^t as

^ 9 ~ H loss the sdllin^-^cre^niiif; circuit, ard vdth tho, eoweptton that. ;

i.ho Jknsh* cl^!i*r-ecKcenlraio vasi dewaterca dirstc'fciy. in. tanks ratter than

-. ,'in a r*u^ classifier fcecnuas no

.is giv&n ea iha r&xt* P^-e. v"-..^^"^;-.!...-.;'-. - 1 -

of iun? 7 ^rs| 15

* 1550 -,~. UOOlbs/'hr*

^portioa of sUs* the-

to b* nalntaltJiBd to awiei overloading tho.\

/*i i^poLptr^ to delivor pulp at 25 P^s* eenfc aoXiite to i

aa r^^drid In usua

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KixjTiSXris e^rêntr-iUon cC oro ^t-Ûiod. to S j rnsh-oîindj tabling

The ohî of the tsst v-iu to oblixhi n o; lallan-- -*1 h-ilan;:*!,, -Tollo

:Ui^ tho csost aaiiai'atf'tor^' iTowsheat do^/elo.^d t-ft wa.ta* - "' ;. "

ia .•••ill-f^K:^ 9 ~ 2J., fexco-^ aa .follo^.v- - : .. ;".

(l) Bêausa no jâka classifier vsas availabla to 63îar the Eodjo .

. elsar.er~concswirate# this pst*iuct tâ-3 set* diroctly to tanks, ' . ;

ami stoektdled, mid en tlrf^ accourrb contained csoro apufcita,

than it would have hs*i it been d^fcityrad ia a 'i"ako claaaifier.

2) ^he table rovsgher-cojoseatrato iwaa retabled, arsd the cldaner-tadling;

addssd to the rot;îexvK4ci-.plus-saj3i-ta.il in th* 5~?t* Donver

ihe ^saairsifer ox* the V^H ^sno'ns pra5nct of the "first

:- : . Jtsjad-sarapls roêtsj total " '

ficKi loads V. 1575 Iba* '' ,- :' ;' : ; '.

i^s^-ticn i)f rum 12. hrat 15 ^n.#

Peed rates 12CO- 1900 Its/Jurj average obc*at liiCO Iba/lir. k

9- .-' ll

13 ~ '5*7

Fcsdi

s (a) li grabs* ? sots across tbs circuit, taken ad follows,--cr.il " .^. ~

Lte*i for screen ara

AJi? 1CA;-', HAiip neon, Ur.M,

(cent 'do)

!-Sft;^

^S

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S':W M

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^

•"f;-^ QY5i-flc*i;i rro;r. the T.zc'r.v t jillin..; con* zirui ths tabia till irilelajn

oro cliî'j b-:th vwr* tui'bki in XlH-rAia 14. l b ciir.-s* acuU;AiX:it:.:ti in ihs i'.'ochu

:^.i^v; csrvj. 'r--1- j;ro::ortio?i o,C slir** in Ir.o t'ible Tseit KJ:* alfx) .uich loss t^n

i i" i t "AX j. "i-32 n .Lin-

i-3f.iti^x thvi t-aoltt svaîOS'-concentraiii r^r t--o cJ.oar.'az'-vAlLLiv. i 1**

o*.^yoU. i"roia it ^*as v^s^hici os* stapled, hsnco JTKJ inTopautLoii vsia o'fctaiaeit on tha

07

U'tdrht . Wfc. ?* . Aoaayg J* Distribution

o) 313,900 100.0 ' ' ,comt* 9*200 6B.3 '6/1.6 1.00 94.8

3 O'flo^ , . ,cDQ.... r ,. A^fi,^ 14.6 26.24 _Jift^,'ib'tal i-;asnytie. lOji/CO 73*1 . . ' .Vo.3"

^k.A i* M. -1.' ' ^: i-*N - - *** O ' ' 1/^ f^ ''^'7 **V^ J^C3,1X130 . . J^CV *i. f l.W.iJ . ei/.cV .C*2?5 2.0 43.6 0.73" -" l.^ :

S2o2^ 2*51 33.96' :.26*9 •'•/••6.35H 31.49**- . : 3*7 6i.3

~ Kottha tall. -; :-. . 4.91 33.10 , ' :. --. ; - !

Ibtal aecotost^ci ta2r.33,910 100.0

K calculated fsfm asa&yg of taroduetsj distribution based on producto

aUj isao'iho only toot.with tida.jClcs*sheet in T^vich s

balance t^s obtained* lisa agysat^tt between the actual

latcd assays o? the lice he tailing is,hot fiocd^ Isit ethsrwioa aj?

au'i.o.s good aa csy b-ss

Joc'j cr 3,9*2 psr cesnt o? tho aratxto in slU'*3 shovi^ that t.ha p?*5t;

ncA-'Tjhf^t :!.J une^nor.'dcal. i'f the r.cu'i* clariaiix--':.'.' ove^-ilc*-' •wjrs rstum^d to ths

.'..-•rho j5}7r-r^t,ir ;j."d w.i.3. tîil^ 3"'-i^ tr3r.tc.-d b;' fioth *lctatioii^ thsuo laK-îS

::;! ^-:?-li.i t:^ irÔuo.iti to ôu^. -5 to 6 -x r o-'jrt* ;.L;fiil~;iftaio riohation tositJ hav*

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ac-d r^cieaiil^ Roch-3 îârier-cone^vtvitc oi* rill-Kun 'io. 1.

This 'T^S a prÎlsd'iaiy ran to tietor.dna to ifcah s

3asii ix) jrdll^-d to eoniadn l^ss titan 0,1 pev.ceni ph

taots in. ^rdcH Boahe. cisansr-conofentratB of Eiil

separator without .'J : '.-

the phoujôrns of those eoRc&ntirstes

to

nas I, 2 aasi 3 (2^ to-

Feeds

Feed

ra sclear,-ed la a

rsg showed Uiai,

to asset

, !-!JLXi-4iun ito* l (20

Ee 6iV.2^j *o03 '-10*4 ; ! " .-.v-

j .- S . ;*20''

. eencsatrate -was fed fsrxia a .dyy-'b&l'i \?eedw to

2: 9* AfcLa spirsCL classifier that aotod as a pulpcr and, aa to

a a/*51 -TlaitSinga- eojiical iidll eontsitii;^ /XiO Ibo. of sdxad 3/4? jorid l!* ;:v

ball3^;,l^p~dfinaitty.iri'.tfce sdll wa0 sainfeatced at about 50

^solids* The milled pslp, diluted to obot}t 25 ?or cent soH

oft the Itot&e separates** ,; ;!Tailittg uas dollecteti iaê tank^ \:;^;.,.;

rettarmti to tJio Skia claos:ifiw, ^rosa -which '.the oimsilow ;v••.•'''•" ;."' ? V^ "-'., - ' ' !.".-' ' '" .'."- ' - - ' -: -' V^'J'-VV:\:.'^'' ^- , 4" • 1-.-'-^-.C as unial*. - 75io rcelearjed isagaeUtt* coneoatrate.ma do* - ;

in a Dorr asako- classiHex*. f" '. '.":" -'.' ."-'.•'"•^^vi;^-''- '-V:^ ;.^.v: - ; .'

Varisd'i?oja ^0 Ibs/hr at start to 300 Ifca/hr dmdsxs ^* to dterfc

roper raid to b-tuacioo t!:-o ts.lyev;ii aris:' nvcid o'/erlcadirjg ti'.a Hod^

scastiU'sj.*. 1^.1^*2-0113 spot-j^rabfj of proc wx^j t-akyn Tor

In&UttJin.;; on** co.2p2.eio sot- of tlrasd grab; across tha circuit at 3 ?H

v.-hsa i-hs circuit ^^3 stal'ilizsd with a f a ea rats o:? 4CO Ibs o* dsap ^

(3?0 Uvj diy) pvr four. fciusd rats VMO .LxraiisK; by the fsir.a o? tho hall -

,* --s eJitii'sJ p-ocuot vssit X *t settle IB a tank ov^mi^Jit,

eleeantwi,, f Ilia reti/ dried and weifêd^ soxi a oasipia tjxst for aa-jsyj tha

,-' stockpiled;

A n says of

Itoeh©

66.7'

. "y. -, •... - ,-'.. . .. ' '"i.. .--\-,.. , . .~

i ' -l;. . r.. '-, ' --, - : - - -y - - . -\- o

Total ( calcuIjaiwJ) 101.00

" 2he results 0JT this test ahow that tho fix^)t-stage ccnoemtrato saegr "" \/

t.xj closnsd fc^ rcn3JL"Uin.2 aKd i-ocleaning* : TJie phosphorus content of. the ôal con* '.:

ec-nt**ato (30 p^^r cftnt -SCO ;i©2h) vnrs 0*0?S per cetit* ,. ... , ,* ^. :. '-" - - " l

. Thw Hoe ho t/aAHrvr carried bro'wn jslivijo SOE.*J astite alls

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'ivies Cac-i vraô v^\*.s^la.l^cri caisrlj^ ihi'j run ^.3 liuitcd by fchei caca.*ity

the i-'cch(.f sev.arat-ir., To dsllvur s fculi tfill produei containing at least 35

per wnt -SCO i",vi.-:, '';};o vîli. iystd v^s Increased to 7^0 I-' s* -H a fesd rate o i*

3.XOQ ~ 1150 l r, 2 p^r hour. the Jo?.h-3 se^nr-itcr- waa heavily lo-idod w/i waaMi^ isa

loss oi'ficien?, thart Ir* xL-:-. ^ ..liiclrjiry run ;-io*4- Tr.s high ei* ^josph&ras content

in tho final jspcdy^t of the currant sim âa la.?êiy a functiort o? the

of ',^shi*i|5 oa th rate was 2 to 2^ li a* a that in' K-ill-Saa

fsôsi *X5 to *3 P6^" csir-i- pliosrîosnia*. The lead, 03 ths elârsi^-belt -'earri&d- -v:

s 'sLiaa in tho ta,ofct*ash and. eome oS tM.3 slirso iâs carried -..•';;-'

lato tiê final py^da.at,-'' .A eicsssifigr inattâd '.of a thic.i:er^3r ttcsid havij lixproved ,'^ ;

rsst Ava3,l5blB fer tMs t^si*.. ::".; ; :'", ' ;-v ;' '..;'.. ; : - .'^- v

between the rd.cMlirtg and ths clcaner-coscentrata : ; . ;'

thti phosphorus ccntaat* 7h-a ^dulla^ tX)KtAlred iiio slirw waslisd out on tho ' .

cl^nsr-belt, heftci*"it' atpsars that an ovarall grind of 35 * 4Q.

'r.esh, with the Klddlirjg: returned to tha'Soebs-soup/ifsr-felt for ccctra v

vKjiild achieve ths desired result Ki'thou t a adJdlix^-rorîr^ circuit* . Unforfcuaats- :v-

. ly^ -th o .assays of thea* pro^cta wor* so t. r-sported in tiasj to calss dta

".dosing the: ' ''

t

. .. . . -.

'Eoche tailis^ contained a Iza'ger psxsportion of. "glim than

sd "of tha Jir.e gyir^' hence losa to talil^ aUju** taiXittg v-aa hiî and

apatite was slso vorstaaicated by Iron-1:0arir^ csHa©* -' Tho tabla

trat* vts.3 isfi&i.ly rdddlins and ^â not rotablsd, .bfecsua* a trial ran

that-very littlo apatite could lo', recovered -. f row it* ' ' -. ' ', v '. ' ;.: . '.,-

o:? the prc'iuetn of t-he i?*4 c-idi't,' c^rv'o. 10/5^ ai^s

s^r.t stive o i" remits iit a stou-Jy foî rat* of

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yle

652.58*0

16,020.0

5*1'

13*7

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ilkUCl-sol.ro* .••.'-.. 2*18 ; :. ;' v.. :,'..-..-;\-;20*2 -'.- -'..: .'-'-.. -.V'-.;.. ."j?;vs,,^ : ': -.- "•••""••'.21^5..-'.-": •".--•;^-vn 1

.luy^lfta^. ."bnlarica. ~\ "total p.*pc

300

rcccr/ostxi.

jlow*""l thes*v ---- -' ' -' : - --' - --'-.:: ----;;.----.-.--i-.-... ••

oi" istn* la ihe

?o oftti 27;1- PpO^j th^ calculated diatriboU.cn is.as

the Cli'i'arance in Ih* irjilcatî

is Isss tsi*m 0*1 psr c^sot^ -."::; ; .'., .•';.-v. - . " /'-r.'

AU: foed dr4 prcducta fe)9?e veiled ^^sa;, asvi tho

tV,s dot,tti-asins*i fa&Iatura content-su ' P-SCSUJM-J tlsa .nî^bdilt^ ojf

riiv-j 1-15'w*3 cuî.n," siectdily csari-n^ euil-run 16^' thtt r-;i*jd TOJT this ran Jw&s'

eâ The tilfjêno^ is alight* , ;': '--;.-..'- : •'"' :.' -. '-^'/V,.

1 IX .V -'-. -t'r-J * 'j. rr ^rC *——— -f-

^t '"•••.*v" 1~ ^ **rI-'tc-d U)

r^'ecl. 0-SriiJt.fcApatite .Tabli coaci. -Table sliias

Aeecuntad Tor.

,JS.i^~.m— . --J-V-L-Lî-ii* , ' x"4*i V' ;"*x'iÂ'5^!(.

,ei;;ht i.t ^ Assay* - ^.Vi; 3. JliXVflOl.

(-Ui-y) FS. rsc5

-'•'•'vjVi^ W-?* f .Xp'~-O

63 ?7?0 -97*6 66.2 . B231,040 ' .1,6 V 2.48 ' 3-j f 'Jj

300 .5 20,2 - 21.75 -, , ^. 200 ^^^^3^ is,o . rf7 0o

65,310 1CO.O 64.Sr* •.• : .- .94* -

iUofcrf.'oution ^HCl-aolfs. **2^5

-

O O ;V C-O Oy^* f . ôV*X 56*5 r- -*1 - 1C.7.x - '..e,^.

. ; ico.0 2CO.O. v' :; v v

bss-B'i on calculated d.ry 'csjjiv&leAt of v/eisôd. uasip fiX-d; assny.calcsolated' /. - 7v;frora assays of products of 2dll-.rang 1-15* .-.., ' . '. ; v-'.'.r.', ":.'.'V '-\:

5^ * yjtV^yy F ' .' . - - *" " - " ' ' ' '' . *' ' - "-'"f ' i r ' ' *-" - - . ". ,* ' 'i" ' ' - i- ' "'

•,!Sjd fi2vat~stage ma^rietito coRcentfatQ is aaenahlo to bfcnetlciatiorx T^~ -v

by stlllisig'to 35 to 40 P&? c-^st idnxia 300 Raoh and .recloaalng'on'a.-vet-belt-.!;. . ... :" ;

of the* iron Xroa the-fijr:

Kiy S3 follOVS,-

m Hh-a

, to recover 99*7

in- a jsxcu'ct that ray bc

(re)

(P)

(SiCU);

to

66 Ji K

1*0 'C.I

O.C6

content vdll

.'jjbs f lr-al ja

inversely with tho titaaiu:v .\ ;\.-*. /'.V.-'Vv

content vdll depsnd .oathe ef

on tho vnagnetie separator, and a farther

sjdi'.ce tbo rhos phom s ostiay to 0.06;;;

ei this

i ' - J -' x ** r".-L -'.-i . U.^-jj AJ-- ."i -w

U) 2? -

F&gd. Jixr.biev'n tons of ore of the si^rsd corlcad x in tbs

Uirlij, in lots of about six tcaa at each of tlnrss 7?,-ruur4 sottiasg^-S^J, .3. d

fnsi 5*2 inches isater-gauge* Balanced fetxl rates at iheso sorfctings v#ra 2230,

1500 isr&i 1S10 Ibs per. hour yespeclive&y* ••'.;.- -". ' ,: ; V~ ; '.". ' : X' :'

tjj/ Ho stc^l balls tsare welded to the sill charge* Feed vjas jdekool , :

IttRp oro, 9 iach*3 ••and' ssallor, 3 to 2* inshea. sdSjdJEua. ' All

,'.'ttssd-fod siaatsaH^r to the sdll* Bleed-off vas scro&nsd on 3L4-;

• ; opening screw in a llo* 38 Jê rm3:-rssr iYasje, a.id overaiê rt)ttin2Bd to

20.11* .411 products wore tsaighedj dip-g^-jr-lsd, arsl tJ-.en transforred to tinuas

- i"or otoirageft 0a.Tia^ subsequent ird3J.~treatt?s-nt the prt5*iuct3y propoytion&d as

: •"produced, vj©ys? rapjtlpati in tvxj-stago Denver pim^s prior t-a roi'sh^rMsoncîtra-

tlon on the-Crockefct belt - sepâtor so that, "Sxcept for...priiaaiy taiilirjgjr the

Its for tfc® Aerofail and rod ;,-dll tcsjts visits- tha saoo* .'.'; - ;, : ;v.. r '.; ;

r Stacic dust was not sampled, arsi was lost* .Hie proportion ot:

dust in^3*6^s^l vdth tJ;e T&cuuat-'and^ allîoxigh It ws,a cot a&asured, this ! ;.r\;

fraction appeased to be about oqu^ to the caltKO-oao "product at 2,5 Inches .- ? :--?;.v': - ' : ; -\ -.••-•-- .-.. - . . - • •- - - :- ', • •••::."--..v. .-.-'/''r - •- ; :-,;'.-; - ,'-.: \^ ; : :-v.v-"-;\v' arsd s^stsral (3 fe* 5 ?) tdaea that ftMo'iSiJi at 5,2 il^b0s•"•"^;to'|^r^.;."-^:^r .i,••;.-v

operation the jsjintsnanca coat of t'ns cii5t~oollecting ^rateja.would bs ' ? '; -

- ' . - v " \, * -. - , f f* r ; 1;.. v, .•""•' ! t' - ' .v;' ~

Ihe •rffcj^rt-p-nar^ tiers of bloodroff, csTclons and jailticlone .

tb.at;5, rvftd t)!e di.3iri.bv.ttcm of r^^QtivO and apatite in these pre*iasto !.

:il'O3t tht- 3-ir-a at. a -I li^se v^cu.;a

gg^^

.'."••••irj^s-s t.hr oro vsir; frri.abls, w.hh a cri-ic."! crs,ir:*3i3e rii ftbcu't 20r t

stoftidajv-ci:^ in ihcj As^rnll toill v..-*3 no short that it ras tU.lTicwi

vao*ns8*' The grade of 05*9 was rdativtOLy ecnsi&tit. throuyhoub'ths fcost-faflSf' *?at -:

i b* s;.rsu© ol' 'the ajxiiits concentrate ;-6flcver5d i"rosi the Ifcdstar ".table deci'sJ

•pr'Oijresad.v^ly "wiih Irscrf-asî in M12.~va3v.uss* Tiiis isii îue# in'part aV. li

'iilutlon' ly .coarse gangue-apatd'cfc nddeiling^'as was bonilrsied -Toy

.'examination of. th* pwûcts* Liberation of apiitlfce a?*d cafetite/ particularly ,;

lath* blee^-off -fractlois, âs affected sijail^rly, elthcuj^h 'tho fef fset on tho ; - ,-.;

. .grade of the Crockett 'roujfjejfvMsbnccRtrftt^'.vo.a nc?t slgrdfica'rit*." Ssêtivit^r in

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Total (eal6)

Feed î-.&jFofail~ - ' -' '- '- , - - *

23 ioo' ?2.2 '65.1 ' *2i35 .156 j CIO 21.0 Xo# 34*23 *C81/770 5*5 ' 9.94 S5-25 *33

3CO - -.9 32.2 33.?ci .25•i i A J n i "io A 'y* J.JJJ o iy . J.J..4 ^:*c.v * /o

32,480 1CC.Q ^8*2-; 9*11 .15

products) ' AS.4 8.94 .15'.' t -- ' ' - '

97.6 2.3 . 73 -" .6 79.3 4 H.

1.1 -15.5 12.6 1,4 ^2 . :.-.1 .1.0 - . a -: :"

••-.'•''.-' :/. :^f: ••••' "r -V".\^ '. . V

' " -' ; . ' -- •'''-'.'•- - "'v'' .'V" "-- •••••-. :'

•' ' :-'',''^:- : ^: '.^^-.i^v - -y.-.-

the discjfepancy in. inuicatoU v^dghts of feed acd iôductis ia not . ,* . ,

knovnj.the repcrtediêight of feed zas^ hay® been incorrect. ^••"• : V'.'' '--. u'-""^"-^ '; ':"v': ; - :

The lowar iron a?nt*nit or the KGgfietito sojajent rate 'recovered "frois . '-'. ;-' ' ' ' - * ' ' ' ~ ' ' '. - ' , ' . '. . . . , - r - , . , -

the sseond esrload ia duo to a aojTesjrondingly filghor titanic coiitont*' Kagrwtitc^ - V' ' ' '. . . ..

froat'h* t^ro carlo-rwia ci1 oro are compared as f allows j-**',- -':' ".' ;.- :\ ': : .\''/^ " --;''- . ;S

..' :;i\? ; Second- ~ '" - -

Fo no^'•''."" - ' •••-.'- '•.-V-'- ""i1* COXW.t*\',-:'.:'- ; ' .-'.v'::-'^'' ,' 't.''-'-; ' ..- Jf^1

i^w^4b ' ^?**5 , . ' . -' . /y 0J? ' * -, " *'v;.. .-. "••'- v "-./", .'-. " .\-i. v ,--," '•• 1- i -* * - ' - ' . - ' i " - - ^ ''" ' "' - *.. i*. ' -," . ' .' . -* \ -' .' * ' ',--.

content of th^ dlâne(rHX)ncentr^t* say be

au additional cleardnij-w33h.ins stags vdthout further grinding, as, indisat^cl ly ;^ .^:c

err^ct of a yepasD of one ixrua or K&^natito, p-oduc*d durins ths 0^4" jîft" of ''-.i t;

February 14. Tnia contain^ AO per coat of -2CO rjesh cv:tterioGL.' - . : -, :. -v ' .; :'"' ' :- . - ..- . . - ; - - ' - -' ' . i'"-' -. ^. :'" ' ; ' - ..''- ' **

IlCl-sol Pa 65.3 65.3^05 *S52(.113;;P) .l/

. y .C'YQ ' . . *O66

ac

C on*; t.HC1-5T-]

2.5"

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35t*5

ICO '150'200

-II CO

•**j^vae*!

Oêi'i 1*CO .JlV'

63*1 1.15

Ho, 2?^ 'SC?iS:tI TESTS *1 . . - '

Cj*ock4i'fct. C-Oiisti*.^n"; ^20'"''-

1*9 3*35.2 11.9

..11*4 ' - -"13,5. '•'.i'.-

^0*5 24.5 ^. ' 21.5 - --. , 19.1

. -16,2. : 10.1 i. "0.6 . 4.44^ le? ;

Ôft3 Â P'

3 65-3 " ..253". ,,C?3 1.03 . ,- 3c.30

65,1 e244 *CoQ 1.23. 34*03 ," . ^

':s^cDX^^-A^yA:Lmiiaii:5;3/ ' •"••"•'•- ' ••'"- , . Tribls Product

Crockett TeiV, ; ; : ' ' Apatite. -' , . .'. ...-'.

2c3s 5*2" v" "' 2^': ^2!* " : 1". : '..4' ' "::*3 '- : --::'-'---" ' ^ : .:^-- .8'^ r"-'

, .••••1.9-.'. •'•.j. 1.6 ' ' :? ' 2 .4 ;, 3.8 "-v ; - ••"• ; . . 6.5. ;-. :i' 6*2 ^ .••"- v-' ;9*8 ;. ,; 12.0 -.; - -\". ' 15.4-' ' 15*2 -" : -;''-- - ''' ' . 23*0. ;. --V 22.5 '- :- ' .".-

20 0 -- ' -' 3*? t- *'*7 *? ~ : 2i. 0 ' ' '••'''•:13,7 ^0.2 21,2 20*2. . '" :"23*0 15o2 . 10.6 - X0.3 :7o2 8.5 ; .:--. : -: -'-.' ..2.6 , ,\ -3*1 -- ' ---:'.-

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to iho 'sarj®.'sjssh of -pjtxjtiuct aa tha second haU: of the Tiyst cerloiad, i*®.*" A;j^

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~ cuts st 15-v

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ntervals o. - - -.

ordjag arscl

*lfee jtc^d to tiic table cotttsiss&Va large pyopox*tion of-' ' . . . . ".-.. - ( - . ^ - .. ," ' . - '. . - .' -.

that repc2rt.ed with tbc ap&titej tho.xjsgJs of gzlrd was too coax-ss ' :

for this gratis oi' or^* . Iha tabXe i-ovgheiôoncervlrsto âs cleaj^d on. iho Bocho ;'

p.-icxr to r&H^bling, Iftit eo?itaic?s4 only 3.2 Iba of. Ji&^netit^ ia eoatrast to 125 ;, ,

Ibs in i-illl-^n IS? tMs pj-ouftet t*S)3 ^.seiirdiSd. .'The cieaaoa*-tailing tsvzi. the " - ;

t^ble coKsentrate wa^j drt.tar^d oep&ratol^r ('ûa no* li) iôia th** rs;.iiQ.ar product ,.

of ths riffi fcocMtusa.^r 'thft high Iroft contort, as in Kill-San.3B, •;^;;J ; -'.^.y; -,. - : A ' ;" /-: '

Bio aaagnaU t9 was gi-oansi ^ji&r than in J*112.~fit;in 1C,' hanes pic^~^P ^ -

tr.s st-riag.filter was as soo4 as 1^ Uia Dorrco^ but iho cako frontha string : .-V"

''" '^' : ' - ' v

String 3A -*..^•^••-^^••^^^v-'---^^.,

..' ' .f--1 ' /'.-j '''"..-y' : .•'•".''.•'.'..•'.•''-'i.' 1 .'""'-.--'.v

îolido wens is&stly rsgnotite, so thia --;--: î

aas-rftclasned on the Eoehe, at 10 aapg, ajî tho Cleahor-tailit^ s1** ; j ' :

a it s^ttlad arsl flltsii'ed so irA'idlirss-sliaeo !Th-3 a?.?*netite vsisi added "';

to tt. o nl

o co-itd

oT ^ffirau win the n&rrf) i\o in i&n-Suji 1B^~ prorated, sottlisuj of .toil-

bi.it not oa" ;aL.dlln?-. ' - . . ' '

i.'agrwki.le -Apatite - Tab-Is Tailirsg : îiit&ir^

Ho* drums . - ' 12.Cross wl.* Ibs. 23^1^0Mat Vffc.*e*et.,lb3* 32 j 540Koi.'iiAX?**' '/a . ~ - 5**3 f'ot wt. clrr s (oalc) 11,810

53*5?C

3,260

^1\J-..

llJ-3f

rt

'•-f 3

•^j'NTrÂ'fr c*"^ 1 **pjL 1^ ' 15 T ? "^^^ . a ^rtJ* iC We fcjj. .Li+93 54 Ji^;*3 *

*rdad-".'." -a.: :.; ••;"-i". ;-::. ' , ' -- - . . V - - : '-

S3 . 1,S70 --: 273 - - -•-:6.7 - .-U*4 " 12*9 :

.33 -1,600"- 150

Total net ti*^ weight^ ecu abovs," 16,950 -".- . - ••••-' .y"-" '; - •••:"" :'V'": c' ' -; -'. ''.' '.; - .. '.-

's.' f i-^vV *^™Î*4Jlart ' ' f fWi^^"'^ *^^"i 1 -- *,1 1*.^**^ *fJw*fl4* 1^ ' ' - - \***1 *? *-^* vi*/-^,**^ v

. : S3 ' -, ,, ' - ; ';- - '35 ' ' ' ""-. ' - "' . p^ ' ' 'A8 ••-•.- : - . . ; '. " 1.1 : ' ./*r*'; , - i -"*

ICO XX.9150 v:' 1S.6:#X3 14.9

..200...-.- ;.;.:^v ..-.A9.2 :.-,;

" N'(/^) * 91

Assays - - . ' ' -'- j-'i M in : . f r ^tiCl*sol.te - 65.1 -. 'p2or . . ;- - .195

(s).7

6.217.023.SK/r.9'-'

15.77o^4.3

2&1

1.47 .29*3^-' ' .ea -

(b)1.04*26.08.0

15.925^ Y

21.917*8:;'

^

3.0629.39

. '.- --. - ' \ .-.'•/. .'.-••T . ;.. .. ; - -- ;3.4- - - •,:-:-/";;--- -;-- .--- 4*6 -; : .-,..:,.--.:r .'--..- .2 : ---5*3 -- ..'".:---'.- — : ; . ••-. - .*2 •:-"-^ :9.9 t.2 - ' v n.,0 : V

1S.5 *7 '- - ; 3*5" :15.2 -4.1 --. : 6.723.5 , 10.5 : . : ; 11.1 :; v25*1 "".v----'-; v 34.5 :- ::'' '•-.'' f v'75.3- -••'•- :"-:-- :

13)- ,- ' * - : • -^.•:- ' -:' - ; "

. . -.. --'- .-- , -' ; .. ," . -.., - ,- ,. .' ' .' - -' ., -. '-. " . .; "' A ;;: ;- ^ , •••.•- ' -; ''''-•;.-

2?o6 5*71 -' -' 25.7 :U.32 N 25*16 ;^'. -.; 16.54 .•. l .-"--.•16.9 :'' /•'^•••-•g;'::;..y-;^'V ; .- ;:j;:-.

(a) 'Avcra,^ of fotxr d (b^ Ono crus, t

psxxiwet. ' - 1 - " - • '••"•'' ; ":'',^' fi-oa tahla concantrste'.

5^SBWW5?SMS!^

1 3 .'ift o a

iifjtritutloa

*.o.. in

lasôUt^ -X2,,47C 'iSatlfee ••-':'"3îOJlL'at)3 1*750inbie const* : - ; :.120 . "~C-e^yfld"-^.'..' "••. : J1 ' K) -;

*Â ,H 7 ". tV^.js - 'JP.A.10*9 - 1.75

9o9 7J*3:; - .7 27.6

,2 16.1

•' '.XL'-'.29.35 -

.24.42 .. .3A*32•^8.^;.--

.15 97*2•.cs .- :. . *7 ' ;.

•-'.28 . \ - 1.6':- .~\-. - : - ' ...'* /;

*68 v - nl ; - 4

- 1.8 * .;. - . ;i---67.1 ".--•.... 29.3'-, ; ' ; -----vv,1.3

*S ' '

iial (calc) 17,730 ,-VlCO.Q

.15

6.? - apatditf in tho table procnct. ma low oy than usual"''~ ' ' '' ' ' ' ' '" ' "' " '

•- .**' . ., -' '"' Usdj'.and ~:.

.'.-'- - ' - ' -i ••••: • •*" "'•.'••.---"i'Vl --.' ' . . t - ••.••- :- '.' i ~'-*e~i

of February Ja/5IS..

{no4* of tho 8 -4

iioche, at 10 amps, vith tho'^bllevdr^ resulta,- ." ; : ". : ',-.v L--:'^ A-i. ^'J :':^HV'- :;; -'îi;5

\^; ..'o' ?:v^ v !aii-Han.iB;\':;v'---;^V^:::.^^' "' i ' '- ' ' ' '' ''' "

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Mil test 8Jv^ch 'I'll ii* * i t ntmimv t*.m\ i ***ihJ*T i* u. **iii I -IBI

;7Hs iia^ f O5si, at

l to IV pax* eenfc salina in ivxj ;pu;-j:;3 In

i ihentia tr* a IC-KjÛ l-aittt bf. iiotr/er. J

.J*as^, tbo last, iv^. as\ . ' . -. ' ' -- ' " - :" ' ' . '\ ,\ ' - - . ' .

to coil Ko*:-

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26IQ tai3 attds4 tov t^d-.toufher-tailing to acceloraie

; " - lêa^sr.ts; i ffr. adds?*! fts .i'oliow's^** ': .^ :-" -': . ": --"t'•'•"- -.: '--"''' . '- ; ,; '- V .-: - '' ' -;''-^'- x\..'' ^'' •.-••-. ^••:.. : -/'.-

. Canatie seen,'.. 3 Iba per ten

' ^ :; :- ; U.I ia.eeU

SKaiVxt lA2-:3. C.? :lbs p^ ton: solido, ^dled aa 1-i sc

k&TOscr^*, at rat o ci' C.2J Ibs ?^r ten at tha V

^•si' fourth ypX(}7WX*-4!\9lis*-. îa\sato wss i'otliis^s'l to .

O.JX) Ibs/toa r.t tho- iMrat vcv;h^s*"noil aftor tha rave ;..

iii i.. '.'j cctîiô-er, ;;^--x:y !'.':'j .-l? s t r;-3;I siatesi nu a

.':n.-.r- ^nUr-i of/-: ..su ,~ f t ~---i.;\::\l. 1 :5.13 rocvjj-î to obtain consistentl

ls, ':Avh- ';;.a:.';-acldit.5.ca o T rv^f.r.'t

teasi o- u^, ix*ulu hava i:^s,ovcc o^ratlrjv erricien^y", 'and ft

âi-^swtaiiirr: rather than ro^tlin;.; tjjis frcictioa to iho hcau of ' ".

iculd psMsbftbiy bavu i^ôvsd tho . .r^s o? tho -final conccntratSj ;

thowph 3TSWf^nfc-cor,jai^ytion wosÛ .have been ollîtl^ 'M.,-Jier,\'; Eonefiolatioft o^. : ; "'

rato ly a j.yi*rfcotiti9 float 'rsir.ht tfive Ixseti •sv**n Koro S

•' .':Tbu hlsh-ly d'isp-srssd TIctGiion tailirs/: sstlilati slowly in sc-ito of : .,\, '

s,k;ition of 0*1 Ibs isepar-m 2610 p-.jr -ton {sollas* ' ixsttlins raijît have been .-. ,, '-"'

nrtj-j^y acdlt.ion. ox' li:^ ajÎ aluri but t^.In

:.*;o~thIrUs oT th&t of JS-U-îA Xi'* ll^j circuit "Vfas ocurcsl^ balanced in. -- ";;---'';

Tvltejiur^ 2^t^3 o T t4:e Hot. CC-T

i -" tin,® -i*r*a rsfjdred ". ta filter t;;o troducti en a 3 !5i3' p^ O-lter* ::-',/.".

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the results of ndll-iaelalion were leoa satisfactory than tfcosn- ;; -

tests, Tor which tho following- r*saaona arc su rested,- ........y

(1) 'fte rjri M-M too abort for atable confiitô to bo sstablished , •;

(2) 1'h* call-bank wao tco short Sor proper at^^ of re-

(3). . Tno roeirculation of. clefincr*"taSlins: upset, the',*

repeatedly in tha; ahtflt-link, thero^ rioati^. irorvbearing' atooWlaV-â.j

lea îovad bs 5

is r-r-eota^

in a loêr run. A acavorvjer float of the oleanar-tailiug

an alternative. ' : - ' . " V . .". '" xV''-" ^'V : ; -'- -^:' ; ;v

It-, v^ accept the isdicatod overall recovery of 73 P^r cent of tiie , : .; -

apatite fstts the tailing sliae 3 in a Hot. concentrate assaying 35.0

ated total' s-cJ cowrie 3 in FdlLWiuna It*, end 19 approximated 90 per c

lo notation tests 20 arwi 21 indicated total vecovsrias oi"93 per cent, "

and theo^ recoveries, or better, should bo expoctod in practice because In these'

estates of ra cove yy the' potential I'ocovcry ;'ro:a tho cleansjvtaila t*as not in- ..

!- : .- V Cn to* taBls'of' tha recovery ol ap^tita fro^ taili^ sU^'5j6icat^.

by;th0 results of uâXâcai. to,to, ani of otherôducta as ^^^^^

in 'tha id-n-ru^, KUl-liihs'..ld and 19 ar* con-parod in taKle. ^^,:]^^t^

'•t v'-^.- v.V.""''.

3s"•" "i-

jIi-:^:d,^ri-iiL^

..^rôn ,w?.Iivaasj' fer vôcecJ:ire aae' pa^c /,3j * 0*" "exalts sea tables /ic*s

J'-y 33 ;---"-* J 1*9 . - ' . . . ..^ -' . -.•- . . . .

?AX}cU:ck3. Acaa^/3 x-s-* screen to;jt,s of Ci-od^tt fsed, ccneentratu and .-toiling; ;' ' "" '" - ' - " - ' ' ' - " " . * -;. - ' -* 11

'rastilt3 are tabylatad in -Uibla Uo. 35a. - "'4 ' -. ' ". -" V '.'\ .-:' : ' . - . . . ! - ..t- - . ...--; ';..;-.;;- -. - :-" - •;.v . -s". r \: - - ; - '^'^c, Screen analyses {j^~^ra;i ua;-a..ies) o* t*ible product aprtfcitej rosuits are

Distribution and tablo . -H

of Ores 19o/

•' - c - , " - ' '.'. • '"•1. .

'. '-^rVx/V^^

;:--y-v'" ;^/:^

Product. AerofaU (18) /';';-V:'r''.^ (i?). ; -'" -^r'

0re ,'..; :' .'-.- 1 ' .. '{";v ; .-; :; /:" ^.4vV.;.'-;.v-8-9/*;

Crockoit concentrate - 63,5 : " . .1.1 y

Crockett, tailing ''^S^v-^/..'^-^;^

product Apatite- ,-^ ••l*3d:Vv •'••• 3^* ; ci* ;conct.^' '-'"^ 65*1 ::v ; '.^:. ; ";

The seasons for tho aifferenc^s in gradft-arsi recovery of;âpatite hay* beeri"dist*-.-,

"it;e ©tfect of iovj-grade' feed to it-he tabla is'sl^^ ^îrl^ .iti tJie abo-ve;

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s o* ta-st 12. 'So J.TCX'.VS;.;* vxn'o clc?.^^.:* ' .

o/ion.

Copperoil*

1*9 *75

CorsditiDrdn,n tiwa-prior to rougher-flotation j 5 sainutos at 20 par : '';r;

cent solids in tap vater tfitb the salpbusie snd copper awlphJita. '-; , : , : - ;- \ :-

' , Souther flotation: 10 aimteo tdth half of 2*5 s*** pin* cdij 3-P . '. ;

^di54te?s otter addition of remainder of theua re^gsnta* c-cant^-r -rocovc-jy in cecond v

10~rsdnubc interval.' Palled tfcita. . ,- - . . : . . ' '-'.'-'

-; pli.At start of rcîgbor-iiOwfttion 4*2} at end 6.3*6*4* "' , v

. ''The[flotation tails In -ail tosto contaiatui brown sliae* ,.-.'. ;-^'

-rltio rssttLi3 of th-ese towts {at* contained in tafcle fto* 3iJ* Tho - ;. "-~:

greatest reroyerj or pyrrhotite *sa froa feed at about 50 per. cent -2CO ssesh. If.:

tho apatite content of the ison-wagnetkt tailirg. t-;er9 consistently aA*ov* 77 por ; :-' . ' ' - ~ ' - ' . . '. ' , '. i ~' " - ' - -,' j r

es3nt (22.7^ ?gOr), tJ'iis sstôd of beneficiation vi{X± be applied aiccessfuHjT to }

recover low-is^n albitite prochicts that would meet tho bisic specification - : ; .

S^ BPL) end in'fehieb recov&yy of at losst 95 per cont of tlia apatite ci^ht "bs ;

d. Tho r.vî^-s apatite content cf the ora Xised in thsfse testa viaat 23^. '

•nor Cbnt p or 1*6 per eerit i'liîer than t (ie ayex-a.-e of ?ill dis-njonci-drill oox*S3^ ar-3

5,,0 ry;r co-rTt hJ^har i,ht!rj t.ho o'^s of t!\e 3bec-R^ corlos.d as xisod in tho yc-vl-rjcL'

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o? thin tost ohow tivxt srxLittizig tba rcel2ar.er c

î-yrade P't-cuict lns? ^ A'ssovoTod froa this ali

a or,c^ i*o** i~ this tant thiu is the p

by

i^pr^r;7*?~tod by ihss so^bine-i n^:uoan-33Vccnc8ntr-y,iaa ;^.U

co-vsrjr drops aharply i i' s P,,C. content abovu 3?*^ 2- i:-*''* -^ -'Tho grat.* o? tha tsblo prc*.iuct oi' 21ill"4Jan 17 vas too low because

included ^jigue .sVora low-gs-ade oâ coarsely jrrotiad, btst the results o* Jflot.

test 22 i&iieates tho feasibility of recovering apatite 'froa tho elisae end

tii^.i flotation of the apatito frcw the rcgroursd nscdll'jd Crockett tailing -

bs praetiealblo, aad that this KOthoU of treatment 'wi^ht erfect Batiafactory

of apiatit* in high-grade pfociuct rfigaixsles* of tht* grado of "the ore*

vorJ: tdH bs reqiirad to detarzsd^ -whether tha concsntratea so' ' ' ' * '

b9 sabj&ctad to a l\Arther pyrrhoi&tfc float to rccteca tho iron content to •'•

a prope

Kf faet' of Hesti of Grind on Flotation* S tosta S? ~ g.

of this series ©i* t*sts was to datesadn* th* opfciasua de- : ?C ;i

of coisadjsation of .era for tha yecovisry of apatite by tho prdceSnrs developed .vv-

in CKtilif-dcaslfi flotation teats 21 and 22 ftnd to compare tbo recoysriaa froa orea r;'--

of tho tv^j carlostia* ^ha rssetO-ts of JSUll-Stin 19 indicated thai dirset flot^tioa ,v y

of apatit* .^jculd b@ iai^stltfAtcd ixKîtse the latter product waa diluted badly * 4

Grs ( -2S nesh) Test v:o*o* . Original h. s, Ajji-:Cl-3ol Fo* P

^6 incl.

^ Incl. 7.5

Mtn thy Qxcoptloa o* t-''st 23, ii'i Uîch th* oro '.03.3 st3g0~ix)i5.cd '

to -55 ::?-'St only., tha following procsoirs *;as .Colloid in all teats*

cru'i ol about 5 lost oi' -23 i era -i-ora heaci-Bsii-ple. rt2 jest -

rdllad for an appropriate intarral at 50- ' - ' ' - .. ' '-

Ibs of l-iaeh aiêl bslls in -a 12-inoh'

tra tad ea a i-inch, vost-bclt

emt mli-^s in tap wator with ' ''.:, ~ ' : '- : ~ - .' e '*- ' '~ " ' ' ' - - ' -i

The nillsd OJ-e :^3- con- -' '. .

lio prceiticts wers - ;" - v

êdj ;so tJtafc tho operatic** r-ii^ht sxaulato sill conditons. '. j&llissg inier^xla .

arbitrarily cefc.at. 10, 20 and 30 aljiwfcas to invostagate ti:o off-get of fine-. .- -

as la tenta 13 -15*. ." ,, ;;- : " i.:.. '- ' "" ;"-^ - '-- '"•CV-^;-::.".i.--:' '-'.:i-.-';.' ••"' i: -^ :

'•"Vith the exception of test 23 in which the rerj-aa^zietie,'**wjtloa ,V .v

•22CO grants^ ti:-s. Cnoekatt nfcrnmg^tic. tailing.-f rea each o^ theso'tosta ,:?"r

iite'd in a SOO-grass L-crrirer celi^ at abittt 20 * 25 par cent ooHds.to' :..'C. : .

start,, in -tap •jâter, '"with si starvation diet bf lloofat' 142-3 stago-atiied in i"wo /vi-

lots duvittg t?J® 'jfoii^her-Hoat* 11:0 roioghesôoncautrai^ Tri&a cleanod onca "Mlthcut ? :

yeagsnta other than the ssnali araount pX'caU3bic^so.da'-'ZQt^r^''to-ji3^ntain-pH la *-

tte rangQ iO*75 ••'11*4' * Hoa^ffinta jjsi* test wjis 3-^cps Koofat and i*0 jjypta*-.'/'..,*

CiiU3wic soda* . - . v...' .', •' ' '. .'' " -'" . - .' • y *'.'.,'- ~ - '.'-' ''-' ' :j , : -i . :-'; -/".'"""-';"^ .'' ;'"'' - v"r-''.-•' •'•'•'." ' :-'. ' ---. " ' ' •"'•'- - : - " :-"/. ' '••.'••'.(' ' •-''^'^^^^•^v.V^'5:,:

Tho j'^sulta ar-9 f'4.ven in taKLs's 34 — 3^* Tiioy show tbJat apatite ; ;-: : -

my "b# roeovered in jid^h-grado Tlotatioft concentrates froia or© o? oith*3r of tl-s*' ;

Apatite cearjxsr than 65 ps?sh cid rat re ST* Ed v;2ill to frotii—' v..^..•' - - -' '- - - - *. - : . . ' ' ' ' " ". -f

it ari-cca.ro that Ci"c.o! r-eit tailing SiioulOl bo ;:dllsd to at least'^

ao indj.caieU by ths cx.x^yo oi' it:clw*ui*

^r ^nb of tha total

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in a o^-i-mt rtfêr '.for 10 sil/a d^d ojrin.^ -he i'irst 3

stsd inix? t,V;S pan,

-Cv'ollc-d Kith A tstrsd-^ht

hood, /to 60by gas-blaat

aa tsas :vainta.lne4 at l? -; 13 5.TVs* w .g., znattsared \y a aar.oaatcr in tô outlet - s

:r©quisN5d: '"

gratS, . - ;-: v. :. V..- ": v ..-v . ". ' ••.;",'

The first sixtssto were praiisiimrsr to cletenalne the

ins of tetch~eo*B3po8i0nfc!5* In tosts 7 ~ 17 a'thsj

tire osit flue l foot''past the prata. to dfttojiaiao.the

or tosta l ~- i* i-f&re crcif^xwd to .~57JÛ for returns for

L* toata 6 ^ 11 ior subssoieni tests. : - -- -' 'N^'.";;:;;'..^'. - ,;.; ;V ^;-

added

6

t*stj':th*rt*'wfea iitsui'ficient silica la the t&srgs io coishine; th tho :2isya-.- •.••i •'•-. - ' - - . -- : -*-. ' ••- ' ' "••-.- . .' ^ -' v.\^- v-vv ----'v.'-^^-'-^ \ .j^j a iaLag, hence tl\a' lajra^d Hae \â lert in

Neither Ii2seste*:e nor cft-Mdaai'-Taaa addctl' lo-la ter testa fw*.thei^.iisasonsi*';; ;.lA2JSs :.":;-,v V''

5*5 per-ce^t eoks dm^lo^d a \êak 8iJ3ter. and taas-a thoflt 6,5 Sp*r cait sjasaaed/r;^ ^^ * * ' ^ ' ^* ...,-. ". ' - . - ' ' ' . :, ' . " - '' ' : .. •••"- •-.•' ••'- - '••'''•"•:'' -.'"' ' ' - -v- . .- '-.' -:^?.'

- - .J '' . "". . -" ' . . ' ' -.' ' '': ; ." - - " '- " ' ' ''-.'•••"•" '•'.:* '-'v . '- ~ '.-'.-\ -.'-'••'fusion and erverbujraing* The raw mis zaast cositain at lcajpt 10 pier cent', -' ",- ; "

the fraction (i tho:, i

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Iho. iXsst sax of Vr.eso bat ah-test r* a-;ps ired to to thai of nd.'X?. -'"

her than run .farther ss:all~ncale ter.ta to inprova tha dortaity of the.'elater,

r*s run en iha ,I2~Irssr,'.atrsuul aa notw

Of ;th.ii5,.oeri03 '-the Sirat i'ive'

to- 'inwstispte operating - cqnd

to the oain

on fho cirand*'---.."..

m. 6, ajtS V*OJTS Y; o"

Sfctallie'i.103 Iba

J5.0 Y-: 25.0 . Y -.33*5; 31A

5.7

-.Total*^: :'.^ : "..Y-; ; O

Total .-15 i;ot

,. view feed '-îbtal

.:. .1273 . •.;.i-.H93 ••v ,;'

.Vlth'Ti tfifi diîh of 5 r'jicfhea -ani a

i,r.v:!;^3 v:a.3 lot sirj*,oi^d, hencu the Vj

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ci* .77'i^ roy rinjite'ttva

h ^sta reduce*! to /j. Inches

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Apparent density of sinter 4*1^ . '

f lost l*

fey.% October 1V55* . . - . .

GoU-a re&ieisd to'SjS'of isetallica and 1^ sawdust

inereagsd to 7*4?

Unit' lyvtsh.

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ssâ ,;::Total irsst-allica.

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iiot ' *'yy "- ft of . ' -'•- 5? of : ^': . ""ft " "-' -^ rv"-^::;^-

* , . . . * . . j-

53.5 50.0 ^66.7 - ' -. ' 62.9 -, L 6.6 "^ : S; '--^^25.0.^25.0^ ..'.'.3,3.3 . ...\V .,.-...3i..4.....". ..'. .!'- v '^v,-'/ v'-'-^; :•7S.5-:"75.0 100*0 '"'-'•'.'•• : ;;" 94.3 ;^^V:;;-'';-;4.5.,'"'''; -VV^M^vii

•- o75' ."-.'.75 -. 1*0 ' . . - - :..i.o . ;.- ---.^ : -- - .-.-^.::,;,'" i3.75 '3*75 - " 5.0 , . '' '4.7'v.^ --' ;.-'\;.'; ; " . "' ,' '.-"- -^

• 13CO jal. - '.- . ' ' ^ : '" ,- - . "- ' -- : -: - v-.^'.1 -

fetal'- ;-.;-'-- - ',,,':- 85.9 : 79.5 . ;\ ; . . "" ' '": ;".,-' y. v^''x'7.4 ;\^;; :V ---^ w'V;,. - . . p ^ * -i* *. . j,*^*.

Bed depth of'this Cjj&'rge Increased to 4l iwShes bacsasa of increased tkflPoad,ty.-'.' r -' :.v^-;vF; ..' o-..:;-- : .. .-' - .-,. .' - - - - •'- - - f . - V --.'^•^.'••-,. ;.; : --.,--,-,-. ;r : -:^--"/-----firoHj addition of sawciasW' Kotums for this ter/t were JTrtBss strand testa ;',

2, und were* danso 'and hard. ' -" - ;- -'v"' -v;. ; '. v ;:'-'' -"'.^ : .; -;"- - ; '":v.!C '^|

•10'batchas,'no abo^yo* DuiTition of test 39

i V"i* -^ -st* J&v; fesd* Hetuyns* ,)0* Iba. Ibs*

750

i-j'".•r. '}ir\ -^ -^ it J

i''.B J.norfrasod, bod do;Û"J r.\srel/

.rro'T; t-V.-;' '-.!'-.i..lhion of ivuvxiuyi. r.'^rsj very êak.

-Htctt for t:V3 fooU rata W33 tba Ra in

r l *- inch. ^75 lb:3. - ??;J of

•••1" r 3/-'-"

3/3" r*

Total* 741 lets..- ?5^ of retainco

enaity of a:intei* ; ./?*14 - . . ' -'- - -' ;'.' '. - .'' ' ' ' .;- ' •'.'-the (kKgresse in Uoasity ana otrength x#salting. l*roa'adcilticti of

: October IA/55*

. . Coko 6ivof ;s*U131cs, no sawduatj rsturna incrsaaed to J#?* o? ;: -'

to birslaaoo x-ato o? produotiom.-'pf '

Unit batch*

Tiftgnatita

Tbt-al acttaille-s.

*^:;-:.

"SV54.052.0

' aô;;: j2co**a"

VZ.l*

v/tti^ht Kot9llic3 . ; Dry v.tv ' !-3oiatur©*-/... --. - ' ' ' "- " - ' ' . ' ' ' " ' . ' - - ' - ' ~ - 't OV! . ' ' ' ," , ". ' " ' -', " " v ' : . ." ' - ." '' ' ". - ' - - ' - ' ' L ' - ' r" "," t ' "

fcS-X/*?** , - - ' . p .. - . ' - p . . "?r i .- - - "-.. . , . - . ,' .", .,.' - ". * ,' - ' ,\ - ' - - . ',~ ." - ' "" '- ..-., . , ', ,,"

50.0 ; •••"'fiL*0 , :;. •;.-57.6-"' v-.'; .' '. 7*4' "V- 'V.! ;: ;' ; :/- .32.0 ^ ^19*0 ___ ' 3-4.6'' ' " V " ' .:

C2.0 : - 1GO.O ' ; '' ::;.,"94*4' ; -'r.V; .;- JW7 ; /^--^^.-^'-*" jLaS? " ' 'i,- J# j* - ' " ' v ^4w " ' ; - ' '" " ' p' "- ' '-.f T' ' . .-- ' - '" .," '

,- - * ' f ' ' .' '* '*' ,- * - ,- " * *-- . ', ' "*- -'v .1 * - - *"* -. * '- *- -

' r?A tt ' ' ' ' ''- ' ' - " ' : ' ' ' ' ' ~'' ' - '-. ~ : - - *7 i . "' - ' -"'' -*- - - J , ciO.ts . . -i ^ v.- .". '-.; ;. ' : f *i, - -' ."V-'.- 1 - •-•- ;;

good, A burst airline at 11*A2 A2J tarrainatee thia tost \Ath 2^- .

lb^ of fe-ed still unalntojêd. Becl U^th was held at 4^ inches KS& tho tais of :

travol at o71 ft/ailw*- .Sinter'was burned through to toe gratea, brts^ht red In

jx'tto:2 3 indies at diijchai4^, ?.nd still hiyniug actively in bottom ^*ijich* - , :

•Tinker o'yî'baryyu arxi fui-.eu^ but stsrcnf.. i ;:ff!?i3.tn suggest a S^.irther increase ia

;. o i y l.-,;.r o rA.; -svi. .Inr-i'O"-/^ r^lla^,, v-::d a ciC3rt?a !* in fuol rif,ht li-px-o'ô tha Eiritsr

• j*** t r- ^v *\ i** *f***?**V^,1V i-.Hi/i* V? 1. **lJ*JU

I.'eturns,.

..MCra r.^ :nS-:.,A,W! .^.u..-.'/ 1"-1 t 715

Total ^tallies. . .2.W - ; - : '

•797 ;

. 13.70-197 3.

l-flnch

51.7* of .;:'

712 Ibs 69Jiôf...r.

Ap.po,'ren1i dsnaitjr of siiitfcs* 4*22. . ' .'; ,- ' • '•'..'.'•.. '..: -' , 'V--- -./••";'';t;'. i'\' :; '..'^.. : .:; :J-

UnTZ® awouai of "tinaceounted for,". 10. a?1' or r&'tisilics charrjed^ suggests an- ..-i'-- •"•."." ' .•''.•: '.." ' ' * ''-". ' v' :;.-;-'^'':--V-k*'. : '.

ca'j'cs' in r sported woight charged. *nô rcpoveiry is vJiat Kij*ht l/o expected from ;' '. ' - . ' " - " ^ - - ' ' ' - . - ' ". - .' - '.. . '- - -'| ..-.-' J * ;- v ' .-*' :*~- ' .''- i - '* ' " , ; - '

9 baishea rathci" than fjpo/n 10. ll-iia v;e*ijld :lr.c 1-0^30- tht* -csilculAteU Uistribiitdoa

of slriî fjirodttcrts-s&cordingXy a3 noted in tlw last eoluâi above, .Tho oxii

of tbe'sim.03P euggdsta tiiat the lattop distribution Is rjoro.

.?fo*5* October 1V55*

***l***m****f* * ' ' , :- ;.',* '/I "" V'"-' :''." 1 '" L"'-/**-. ' '" •-/J-AVi"'* ," r* ' ".:- " ' -. - * .' V " \; •••'-' H L *.--~- ,i.:- ~ - '-' ' "^' .-."

' - '' ' : . '" "^ ; " " "' ' -' ' * ' -,' - :*' "x-IO V'*1 - i "- v" * '- ! S* "

11 ' - ''- ' '' .' ' *''' ' - ' ' ' - ' . ' - - ~ - - ' '.* -'.' \ '. i - c -liotiarrta increased to t&Z of setallica, and coke rsduced to 5.6^ of

*. ^ '."'.' r'-. .' ^-7

weightIbs.

i /o t u T?; 3 _ . _ .^^îLtii^^ ':.yo.'ilf. ••'•.o*. rt.llic a. A3*^ ,:n;;-s A. 3

ifcs.

AO.O

;:c.oti*i*

-''!' #o? .-' !X Metallic^

SKO.O

j-" " ". " ™* . * . * ' * '

f7 ^ '- '- -'f? 'fi i ' ' '- 1 '''- :"- *iV *^ ' \ . Y.U ;- - --

f t ' . ^j f '/•i.-J . ^'^f* * ; . ' '

j^.;*,5_____,

'that the r-slu

ar-a., this v.DuId ^sxv: t:^xt- this .ra.

bs, i'vi* rxd slurs content c .C ap^r

ma would carr/ 1.5 P-*' coni* our&sc

stlta plua coka ^vld rrifiy fcho rsrn

La-itel^ 10 per ccnb, vjhich 1 0 a'ucut

10

V.V& vrfc*

*iioh^ a a iibovo* l;uralion of test 40 sAnuttss*

Dry vfc* Hew fjwkU Returns Total r^t alii ea*J Jew f 3^^ . Its. ;

400V;-'

S5.ntsr5.se raid* 165

1/3 to 3 A indies of

1200

charts on thd platsj aintor open snd ovftirbtirned.

31

3/6"779 97.5* of

i*o*.? . ihia sdx-^lvos tco liU'gs a proportion of returns. A cds aa ia Tsat with coks rtJtiueid to 5]f P©** cent of swtallioa, appears best to c

tsv,, ,.*, f ^t*ard T-n*a ? ~ 5 - :' ' ' "

Te.nt ' FaerJ Rates, Ibs/hr* ' . rlotal. J-ietaliica* ' i&w Teed*

1, JK)X fuiCOAiiEO* : VAIvIAHJJi2. 1310- 1150 7703. .1320 1150 ' 770 4. 13AO 1170 715 5. r-AG 12CO 6CC

•r-,,,, - ........k .5fll , rr,.;^x f^. t t,, nt , i,.j ^ 55fv -i^,-i' •••••^ i--, a r"J ; -- v-:i r. v -e" 1 •*'."-, r'i-'icJ ?.or-^ ,"..':-*,

- ' :" : :- '--v ; - *'' --,.'.'-; ,' : • :;--'----. '-.i---

Ibs uts* ^eed/ ' Sinter* ?i t-inch. ^' :•30/jft/hr*' .; ?J of Apparent-, -,

- ,. -. - : ; . n^ :- ^^^ ,212 n.d* 4*^

If? 45 ' JW5?

"b?* "'0 {-^-.^ ;.-tl ;n'1*' C1^v,9

or e:,

:^JfB^il)lt*ai*^^*^t^Mffiii^

th'3 taain run, bcvsifiheo of 90 - XOO Ihs entiVi., acco'r*Jlin.~, to

t h -..i y --d l utility ci' rrûraa, uorzs palletised ty tvr^H^y. j.r. a cement rnlxDr sTcr

10 ~ 15 rd.?.ratO3 a v/lvh vsr'isr :vta^2*Ûcca caurin^ tho first 5 minutes oi* iTl:,dnr** ^

lon^r pallatizlfss raoxaeri* would bava be^jj de sir alls to proves lar^r nr,d !-.a

pallets , "but thw cernsn^ îxer was *ico stâli to koe? up fciih l,he 3inlaiiin*~

occasions Vne atrnnd ista s!mt dov^ ui^tll aa e^dra supply or fosd

fillatissd feed "isas tranofosTtid to ths. surga bia ol^ fei** ,- '

IDOO-lb lots. ' - - : ' ' : ; ' - ' : "':-'.-:."'-: .-..^ :\- -S-'-'.-'. -. - , ;;, , ; V:*-'- ." v "

. : Tne fetsia of "'each batch /ua9 a 50-lb, lot (dyy equivalent) ot'''. : . ,

. ' on thd'raagn^tit*:werp- RSI ort.ooasposdte pipe*-,,

Kiwpis? of the Gsscssityaifc to be xêd la tfc* ''follo ' " "

Csfcausa. caly ^ Ai-inch b*sd eould bs carried en •fclte sJ

alater :suf f3r*4 s&ve^ brsakaê at tiisch&X'ge and the 'proportion of rctvirG3

aro

,*.. shift. '-"v-- :."v '.;- 1-;-. ;v-,;' ' ";.; : \

o*-"^v;'l; : .

Tc-taul ? •' -S5.o-:- ,;t- '62,0*

^*;

.'37.0'W^

.li* t-"o asûô 1.5^ surface tsoistaro oa

toyjt of ths . pclistisabls cci-ôaents ('

ityl7 3JL p;r ftor.U flhia a^peaxt-i lo Ix-

tlicm tho . : .

ite Vil.uo eoka) in tho

nciunt, for spoci pcl5.

45 stte.71 rb'M?:.

Tao fcllottijxs tlaia. for a 12-hour period, Cctob^sr 19/55 illustrate tfco-.'opuratdon"

of the. strand with.prceuetion ar4 eoxssuaction of-returns balanced.. use' also v. ^

OUTLINE OF TBS?~WCKK ? page 26. ' ' :;... ;. "- ;" -; ; '[-:-''.. ;,"; ^ j ; -; V.-.' ^Vv .S:- -.: l- : -'' :.' '' ' -'

Operating tisa* " 1C hrs* 5;

Total Vioichts .''.

Total1

Tbtal

03932;",-72? 72? "' :

: 1217 100 ^ ;^;. (*7 -; ; .5.5l-;v-,-^r

, . ,^. - t ... . .. . , - ,. - - . .- .

and pjrcdttsts of ail sintering tests'ari*

-:Gros3*"^v

Cok*

-Vvvv. 25 ;

*l raw

- v yT- "^ ^- - JJ" 1

: .;,^;p^?;•.:.: ; •;-'- i ji"'.vv-~

j^aot ,, discard*

Total ointor* - --

for

H i yi'u::*; all of ccko ash '^) orator* 'note on oT olntor, r.sxt j-.i^

A ."; vTsVO ^ j'v*";^S" C" f

Kn

5051

2.9

Corp* 3 'Sui'jT;

Lee* l*'j

-1*34

total Fo 07.3?^. "'V:"';; r v.\

: i\ tbi'rd assay, by Colorado Fuel .St Iron Corp* showed tho ^ollowing>

in pnri.^ Fe 67*32? ^ till; n

: A rooalailMtion ot the assay "by Ropalilic Ste*sl Corporation shows ' i

there in a coj^sidarabla ascceos of FeO over the theoretical amshta r©-' .^

quired to satisi^- F'sOcTitX, and FeO.FepO^. Tnis Indicates reUuoi^g conditional- - : . ' - - -- ' 3 - ' ' -- . ..-.,- . . -- ..-' - /v '- -' . .:'

irs the bumirsg-aor.e in the strand and ney account i'or tlie dificrenca in wfti^t

botws'sn' feed a-iid isiufcor* tto calculated c&crsa&o in weight rosulting froai ro-

tKtcirx:? r^gnetiie to the oxterit icclioatcU by the cyccosa F&O in the ointei* is ^ ;

a-v.vrcxIr.-Altilv1 S.70 lb:-j, which a^i-cos wsli with the observed

^.r'^ L:VAf-7V''.ii,*"*V(i-*v-.-v,.'-/;?-.-*',-1'/" v^"* ',i"'"~- /'^V^^ '-•*--*'u *"-vrr*vf v ^Vi'-'-.'^vv".?. ^^rv^1-**^*-1-*1,^, ''•*'-'J*^r---*t;'...'Y ..''"^'.v-.*1':'*"^: ''w^Vt^r*^^"'.*'-^--"-;-'.11. " " '''"^'^53^?'^*''

twazfppco5wnpc.xd cx^ ^Kao-rpbr^

K&2 uo^ S'u

.f o

jo

e'4% wo Jt3q.t;Ts SKIK^ pui? S

05**

* '

V't

r*isv

..

-8T?S' R j* . o ij

f-"•- E

Qo*j

i--r-*Oci'lS

C.so-6 c

g - fi . l?r*

t i -"f.S.

fc -r,

3.S

t- S

C5 f-ti

op

5-4

" C

}

*?

ti

"0nfii"!

OIT*

O•:"J

-3

•::,.,4,1*,T,*

,,B,;

•/rt.U^-y-ta u^r* -sent, to A1113 Chalrsrs KinuTacitiring

0,-io to Knydings Compaq? fs noi*v4 ^?0.o^, f-lîd j^ports- h&vo not ba?n ros

Acooi-dv.in to roeîti. xiiforiiatien the- test-d&ta az^ otilJ tender- sttit^r fcy.-th#i

oi' tho research ^visions of th9 respective cc3jsisie0* . -, : i, -'. '

j;r* C. L* Soilea'besêr, , ' ! ' : . ' ; ,. ' ' - -, ' . ' - : : ' ' ' ' -.' . : - ;.' r ' Allis C^daers Karatfacturittg Company, . .' " ;. ---;. ' " ; " v- -; : '' :; ;

(1) JUaap oro, 2 Inches or*d larger, JCroa flrsi c-arloadj 5C Ibs. ,

(2) i^Tiwna core pmkicts eutoiaatio saaplor ic^jecta, fros 41rst -

-: : \. carloatlj 210 Ibs* . ' }. ;; ;. \- '' /- :; : ' ^î- -' \ \ v.;

Crockett c^ncentiâte, llll-iiuri IS (Aerofoil Mill) fPoa second. . ' - .' ' " . .

ad^ production of Febniary 3A/^; 2CO Ibs* " : . :

ore, 2 irsehes arid iargor, ssconti carload; ; 50 Ibo* -, ; ; '--l:'^'.'. . . : . - - : . - . . - .' ' .- , . . '.'':",' •-.'', - ' ; - ; ; ' - : - ' --' -' - V W- : •••---. -- •••-••con* wotsact; autosatic sampler 3W*5oc^5j froa oeoorsi

(1)- '(2)

(3) Crockett coneentriste^ ?'

j 50

19 (rod rrlll) ftroxi

togts on th3.-.a luateriala aro lifted on thtt ns^ct

1/4" 46 -.a

lo/so

3.50200

6 ID25106

'7,

626

52

Ci-ockott Concentrate.

(O) (S)

.8.6

* (A-)

A fit-'O* To Alii s Chalraors li

B'2s D, To Harding* Corporation*

rsoted bolow*

to Allis

•tt) lm*?;i Ct^sellschaft.Jfwr ChocdLa

follow the do serijAioai of tho 8^331

T*jstv9or5c at /alia Cha3jaw3--x*aa doro ujsleir .thQ eupsryislon of - - - ' -. -

Kr*' John Civdg o.?'Arthxa*'G* HcKee fi Cosrcaror or Clovclanc^ Ohio. .Pellota ward- :-'-".

fomvu in e, brjalirv, ^x*^i tv.f tha typo naed for prccsrusArvf, tacssnita, l?o cietails

ts at Lnr^i. xv

o -i' V^x-anto,

eS4iaMMtiis^^ ^

lli

24;: O I

Net cry v-elght

This sampler

in. Tsblfc l, pa-:e 8,

2KQ Iba.

sci at tho I cX Mln*3# Ottawa, aa ,

fu? C

'.Twor.ty-lb* sai^loa of each of tho following^* . .'. : ; '

(1) Dried apatite filter cake^ aa sent to Allis

l-Kyft 16,,

sir^: and Sinterln?' T

- Standard •'•"' 12.

. 35 -,'-" :-V-.W; ; '.' . 65 ...- ' : : "•loo ••'•' . .

150 -- •'•'•". .'2CO - ;" - . . -

-SCO : - ; - ' -- ;?

J-fediaii dlaa. (/)

'•'-'! -7*6'..';- :. ' ' ' i'- ' '. '/' \ ' ' .-••'" ^ ••. :'':-'-'.-'',.' : ''^'''\ :::' : -':'. : i:TK i ' . ' . - -- --. o 5' "- --' '"'- - ; -s'' ":.'-'.' ; -'' * --. ' :"i.' . J~s**i ,-. -. - ,- ••: . . ' **7 - ., .- 'v.-'- -.-s. - ,v-.-,-^- '-' '.20*3 ; ' " -. -;.8.o ^^/••."•••^v'.:"-'-^ ; -'' :V-\-

. . -19*0 ' ' ---.16.0 "• : -" •,"-:^:;. ; ..--''v.--: - -'- ^v. n.5 ' -' ; ; '- -2Q.O -: .:y-:;',; :,-,;r,- ;---; ;r

,. -4*0 ' ' - -'- : v 16,0 . - . v.|. ; V;- -;.--:- :;-v: " ; :V ." . 2a,3 - ' ' . . '. -:' 37*5 ''\--/:'- •/ : -:'.- i ; '-;. ,;./;--,

-' ' 222. ; - -.122'' :'- r ''- - ' ; '. : ;; ; ,' ; 'V"- : : ' ;"

'. ----^ -—" \r

--.l.\uir.,;?, a?^i idUiout nindi-r,, a '

^

5:0-600 p,3,

-.v rt-^r.lfc3 wery fto

ir.ch pallia.

,Vlihr.:.u:h tbs c v* rail si se less

lrar f;rj.ri'j w, B

for pa

fo

Alii* Ctal-r.srs ^g- G^. raporteo. tb&t tha jipat.it*> palletised

without ftirihar grinding Aral yit*ioui binder,, 'ihs sintered pslleta were at

ars*! r.;3iiabl3 for ^yrcs^tallia'gisal procesatrg. ^' . , ',-' i-

FeUat-s janie by Lwrgi^ also haliVlnoh as la l-iilwatiksfo, *rero

on, u usrgi test-can saiti sdnter^i at 12COoC ft iha Si'fttti pollota had cro^dng

200 - 2^) p*s,l.. Rosulta vjere conaiaerea

See

' Products'

(X) K

(Z)

(3) A

, - j, Oatailo* ' Painting IlUnoi©.. ;. ; . - .

fer flltrsticn tosts wet** ns- follows,"* "^', , :j .^-; ^•;,.: L^.',.V';

of ^

To

apatite

of Kill-Jtan* \Q b 19* ,} /, ' - ,

lots of each jaroduet wro sent to eaoh iaboralojy for v

ate the filterability of adxtares of tabl^ product arxi

sf of ^?jl ard 3:1 of these faro&icts w;ro tost-ed. ' ' - ;

XX;•H'*

AS65

K: C150

'lautite

.2 ' . !. 3.^2

Jv.912.7•j .? ri

Apatit-s table/..g

. 10.2 .16.3 :l?*oli)*?

Apatite

.1 '

.3*?

1/i

Ar.-0.ti to2ti3js3*36.6

: n.O03*312c5

JUxtuv^CB H^ttisi.3*77.7- .r 12-3 '•••-•••-'• : ":, ; :

11.913*5

t ri w /J* 8*0

1 "'J'•i f

mP?r*oOifOyH•jj'•Dr-f

*1B I7---*

as*

.SO-ofjsoHl

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2*oVI

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1405 - S

GRAIN SIZE ALAIiYSIS OP SCRBSNflD FRACTIONS OF MULTI;

t.:iKER.AL3- )..AGKBTIT3 - APATPO QR5-; ?RQM NSKSG05.

ONTARIO (CARLOAD CP 242491),

Introductiori

This grain size analysis was carried out at the request of kr. B.D. Weaver, Research Supervisor of l.Iulti-Minerals Ltd., to determine the degree of comminution necessary to free the magnetite and apatite grains. Grain counts were nade of -14 * 20, 4-28, +3S, +4B, and -H35 mesh fractions to determine the percentages of mixed and free grains.

Table of insults,

1.11 no i-a 1. .irain Percentages

in ^ach of the^Scrouned t-'ractlons

faesh.. Size -f 20 4- 2B H- 55 -t- 4B 4- 65

Magnetite 49.3 60.6 56.1 bB.4 55.1 Apatite 2 .'6 10.0 23.6 32.8 36.3Composite h.agnotite- - . - ; : ' ; v •"-.:-.y ; ;-' - Apatite 36.5 25.C 14.9 7.1 6.9

Other composite Grains 11.9 4.4 5.4 1.7 1.7

Ivo. of trains Counted 345 391 369 . 521 419

Piscussion of !''esuits

The percsnta^e of "free" magnetite trQins remains substantially the sane for all sizes smaller than +20 tiesh. This is in all probability due to the coarse size of magnetite particles in the ore* Tho percentage of "free" apatite grains, however, increases steadily with increasing comminution, and the number of composite grains decreases. There is not a groat d,al of inprovewent of the 66-mesh fraction over the 48-raesh fraction, sugjjesting that crushing beyond the 48-nesh stage would not result in any drastic improvement in recovery.

E.H, Nickel, Mineragraphic Laboratory.

OH AIM ^'ALY3I3 0? SCRZSIISD FRACTIC.NS Oi-' I-I/vG^TIC

CO;;G:.I[THAT3S AMD TAIL1MCIS {DAVIS TVS^) OP

KAGMETIT2-APATITS C^i:

Introduction

f T ;.' ^T"J y i. Clfc} 1 KO. 11, MULTI-;.;!!?S:'.ALS LTD.

The follov/ing grain counts were rnada under a binoctilar microscope with oblique illuriinatlon. Povvr polished sections wore made of selected sized fractions and examination by ore Microscope resulted in substantially tho sane mineral proportions as those obtained by binocular microscope.

Table of Results

Mineral Orain Percentages.

in Each of the Screened Fractions -

A, Concentrates

Kesh Size

MagnetiteApatiteComposite

Apatite

Sulphides

0 tho r s

No. of grainscounted

B. Tailings

MagnetiteApatiteCompositeIvia&netite-Apatite

Sulphides

Others

fio. of grainscounted

Discus P i en of

* 20

24.81.0

63,7

7.6

2.9

314

1.040.7

29.8

0.8

27.8

303

Re suit, a

-f 26

55.41.1

37.7

5.0

2.7

332

1.270.6

16. C

0.3

11.2

340

* 35

79.20.3

17.9

2.2 :0.3

312

0.869.8

21.2

1.7

6.5

354

* 4S 4- 65 -f- 100

80.2 86.4 96.61.2

11.0 . 7.6 0.6

^.9 : ' 5.4 - 1,6; -'

1.9 O.o ~ —

318 354 322

1.1 —— 3.575.4 83.0 S3. 2

13.3 4.7 2.5

3.9 4.1 4.7

6.4 6. 2 ——

362 342 403

* 150

93.00.9

0.6

: 0.6 C:—

340

4.2tfl.l

3.4

1.4

——

35S

A3 is to ba oxpsctod, tho percentage of c loan magnetite grains in the concentrate and that of clouu apatite in the tailinga increases with conmiuution. The column "others" conaiaba chiefly of silicate grains, v/hich appear to be concentrated in

the -!-20 ma ah tailing fraction, BU^gostin^ that thay do not break down as easily as the apatite and magnetite. The sulphides (chiefly pyrrhotite) appear to follow the magnetite at coarse grinds, but at 100 and 150 mesh they tend to preponderate) in the tailings.

K.H. Klckel, j.'inera&raphic Laboratory.

(

Ones Branch July IS, 1955TAP

"iir

l;, l

(INVESTIGATION OF RECOVERY OF MAGNETITE, APATITE AND PYROCHLORE FROM ORE OF NO. 6 OREBODY OF THE NEMEGOS PROPERTY OF MULTI-MINERALS LIMITED, AT THE DEPARTMENT OF MINES AND TECHNICAL SURVEYS, OTTAWA, ONTARIO, JUNE 1955 MARCH 1956.

1. SHIPMENTS

Two carloads of lump ore were received,

(1) June 2 4, 1 955 CP 242491(2) November 2, 1955 CP 182379

108,200 Ibs. net. 58,000 Ibs. net.

Both lots were blasted from outcrops within No. 6 anomaly in WD 276, McNaught Township. The first carload was from the easterly outcrop near the South contact. , The second was from an outcrop about 150 feet westerly from the first and als6 near the South contact. Holes were drilled to a depth of about 8 feet and blasted to provide the test-material. Shipments were loaded under the supervision of Mr, H. L. Garvie.

Analyses of these lots were reported as follows:

CP 242491

Ti02

Mn

S

P205

CaO

CP 182379

'(a) (b)HCl-sol, Fe 46. 4 47.4

4. 97

.72

.82

10. 85

15. 00

1. 30

. 15

Aerofall mill Grind

(b) 48.2

10.23 9. 11

. Rod mill Grind

(a) 47. 3

' 5.72

.78

.74

8. 17

10. 80

4. 05

. 15

(b) 47. O

8. 29

(a) Assays of head samples cut by automatic sampler during crushing in Symons cone-crusher.

(b) Calculated from assays of recovered products.

On the basis of assays of the head samples, the calculated mineralogical coi^npositions of the ore in the tvyo carloads were:

CP 242491

Titanif erou s magnetite

Apatite

W t. 07o Vol.69.0 59

25. 7 35

CP 182379

Wt. *?o Ve71. 3

r

19. 3

1.9 '

7. 5

*1 '/o62

27

2

9

Pyrrhotite 2. l 2

Gangue (remainder) 3. 2 4

* Includes manganese as MnO.

The ore in the test-shipment was similar in texture and grade to that of drill-core from No. 6 orebody, and may be considered representative of that deposit. Except for a higher titanium content and a larger proportion of gangue in the second carload the two lots were essentially the same, and the following description applies to both.

The shipment as received was almost devoid of minus 1-inch material and consisted mostly of lumps 2 to 8 inches in section, with some lumps 12 inches or larger. A few lumps of dense, massive magnetite cut by narrow stringers of nepheline were included in the lot, but, apart from these, the ore was a uniform, granular aggregate of magnetite-apatite, some lumps of which were cut by veinlets up to 1/2 inch wide of clear apatite of the same grain-size as that in the ore as a whole.

The chief minerals were magnetite and apatite. Gangue minerals con sisted of ferre-magnesian silicates, chiefly acgerite-augite and biotite, with minor amounts of nepheline and feldspare plus about 2 per cent of pyrrhotite with which were associated very minor amounts of chalcopyrite and pyrite. No niobium-bearing minerals could be identified by macro-, or micro-examination, nor could manganiferous minerals be identified as such, - -

The magnetite occurs as subhedral to anhedral grains cemented by anhedral grains of apatite so that the ore as a whole has a very uniform, granular texture. Because of this, the ore tends to break into blocky lumps rather than slabs, and, where cut by stringers of apatite, is locally quite friable. About 95 per cent of the apatite may be liberated at a fairly coarse mesh, 24 to 28 mesh, but, because many of the magnetite grains contain minute inclusions of apatite, fine grinding is required to reduce the phosphorous content of magnetite concentrates to less than 0. l per cent.

4

The ilmenite does not occur as distinct grains so far as is known, but as exsolution lainellae on the octahedral planes of the magnetite. Examination of polished sections showed that these lamellae are quite uniform in thick ness, mostly less than one micron, and are fairly abundant, being spaced from two to five microns apart. In consequence of this intimate association of ilmenite and magnetite it is not feasible to separate the two minerals at any practical degree of comminution.

Aegorite-augite and the other silicates are associated with the apatite and report with it in coarse mesh sizes.

Pyrrhotite occurs as small, irregular grains in the ore. It reports mostly with the non-magnetic fraction, but fine grinding is required to reduce the sulphur content of the magnetite concentrate to less than 0. 06 per cent.

Chalcopyrite is found as minute blobs with, and frequently within, the grains of pyrrhotite. The amount of this mineral is so small that it creates no metallurgical problem. It reports in the non-magnetic fraction with the pyrrhotite and is rejected accordingly.

The specific gravity of the ore was 4. 17, equivalent to 260 Ibs per cubic foot, or 8. 6 cubic feet per long ton, in place.

2. MILLING

One of the most evident characteristics of the ore was the ease With which, the major portion of the apatite was liberated from the magnetite at a relatively coarse grind and the pronounced preferential grinding of the apatite during milling. This required that two-stage milling be employed:

(1) Coarse crushing to 20 - 28 m e slit of-grind to effect economic liberation of the apatite without undue sliming of it^prior to rougher-concentration of the magnetite.

(2) Regrind of the rougher-concentrate to reduce the phos phorous content of the final magnetite cleaner-concentrate to less than 0. l per cent.

;J

t

3. ASSAYS OF PRODUCTS OF MILL TEST, OTTAWA

Magnetite Apatite Magnetite Product_____C leaner-C on ct.______Conct._______ Sinter.——-—-—

7o -200mesh 38 43 . 25 '-25

Assays: (a) (b) (c) (d) (e) (f)

Total Fe. 1. 93 2. 25HCl-sol. Fe. 66.3 65.3 1.59 1.75 66.3 67,4Ti02 5,86 7.29 5.92 5.70P 205 . 193 . 125 35. l l(g) 39. 60 .247 . 275Mn 1.02 1.03 .98 1.06S . 0'54 . 070 .57 .57 '. 037 . 032SiO2 .21 .30 2.40 4.34 .71 1.34A120 3 .57 1. 13 .08 . 3 (x) .87CaO .14 49.10 50.80 . 21(x) .38MgO .17 .18 .25{x) . 29F 2.70 2.72Nb2Os .12 .15 . 08-V ' .04Ign. Loss .94 .79

Calculated Mineralogical Composition

Magnetite 86. O 83. l 1. 00 1. 26 55. 00Ilmenite 12. 3 15. 3 11. 97Pyrrhotite .12 .18 1. 44 1. 44 . 10Apatite .46 .30 82.24 92. 15 . 65FeO .44 - .64 29. 11MnO 1. 32 1. 33 1. 37SiO2, Al2Os .78 (.87) 3.53 4.42 2.21CaO, MgO, etc. .45 (.47) 3.80 .26 .35Loss _________________.94______.79___________---.

Total 103.4 101.5 93.3 101.0 100.8

(a) From first carload.(b) From second carload, recleaned; note lower phosphorous content.(c)'fc (c} Assays by Department of Mines, Ottawa.(d) High-grade concentrate; assay by Lakefield Research Limited.(f) Assay of same as (e), by Republic Steel Corporation, Buffalo, N. Y. (x) Spectrographic.(g) Assay may bc low, as this leaves 3. 5 per cent excess CaO, and

total is low. Assuming all CaO in apatite, then P 2O5 would be 38. 09Vo a nd the total 96. 3^o.

An all-wet circuit was adopted as the most satisfactory for treating this lore after stage-crushing in jaw, - and cone-crusher to 1/2 inch. The behavior'of an Aerofall mill is discussed under a separate heading under OUTLINE OF TEST-WORK.

Dry-treatment was abandoned because all magnetite concentrates were contaminated {3 07o P^s) ^y apatite slime and would require further wet- milling and concentration as would all middling products, thereby demand ing a complex, wet-and-dry circuit. Dust losses were high at mill, screen and separators. Recovery of apatite by dry-treatment of unclassified rougher-tailing from high-grade ore was of the same order (68 - 75 per cent) as by tabling similar product from wet-milled ore of average grade, although the iron content of the dry-concentrated product was 1. O - 1. l per cent compared with l 5 - 2. O per cent in table product. Low-grade ore was not tested by all-dry methods of concentration, buc tests on high-iron, low- apatite concentrates indicated the feasibility of beneficiating such products by treatment on high-intensity, induced-roll magnetic separators.

The results of two tests run to compare the performance of a 5' Aerofall mill with that of a 3 1 x 6' March rod mill {Mill-Runs 18 and 19 respectively) were inconclusive because of differences in the grade of ore, particularly a higher gangue content in the rod mill feed. The median diameters of the Aerofall and rod mill products were 282 and 222 microns respectively. Because of the lower proportions of slime and gangue in the Aerofall non magnetic tailing the results appeared to favor that mill, although the grade of the table product was really a function of the grade of ore and independent of the type of mill.

4. MAGNETITE CONCENTRATES

To reduce the phosphorous content to less than 0. l per cent magnetite con centrates had to be milled to all -35 mesh, and preferably -40 mesh (35 - 45 per cent -200 mesh) and cleaned on a wet-type magnetic separator. There was no classification point at which the rougher-concentrate might be split to reduce the size of the regrind mill. By cleaning and recleaning the reground rougher-concentrate, the phosphorous content was lowered to 0. 06 per cent (. 13^o P2Os). The iron content of the concentrate varied according to the titanium, as noted in Table No. 3. Fe plus TiOj) aggregated 72-73 per cent; total titaniferous magnetite, including manganese as MnO, amounted to at least 99 per cent in all cleaner-concentrates.

No significant reduction in the titanium content was achieved by fine grinding. The intimate association of the ilmenite and magnetite rendered separation. impossible at any practical degree of comminution.

The manganese reported with the magnetite; no loss to the non-magneticfraction was noted.

OUTLINE OF TEST WORK

5. l C ru shing and Sampling

For milling-tests, the ore was crushed in open circuit in an 8" x 12" Hadficld jaw-crusher set at 1-inch discharge and recrushed in a 20-inch Symons cone-crusher, set at 1/2 inch discharge to deliver a product that contained less than 6 per cent of plus 1/2 inch. A head-sample was cut froin the cone-crusher product by a two-stage automatic sampler, by which a sample comprising about 2-1/2 per cent of the original ore was cut,

In each mill-run, samples of the final products, magnetite and apatite con centrate, were cut manually at fifteen minute intervals, and the respective cuts composited, usually on a shift-basis, for moisture, screen-test and assay. Drums were sampled by shovel-cuts as filled, to check moistures and assays.

In addition, grab-samples, timed with a stop-watch, were cut at specified intervals sufficient to provide adequate information on conditions at each check point in the circuit and then assayed separately or composited as might be indicated. Miscellaneous gr ab-samples, apart from the above, were taken as required for control for any or all of solids, screen and assay. All samples of magnetite concentrate were demagnetized prior to screening.

Typical screen tests and screen analyses of ore are given in tables in the . appendix as follows:

Screen test of Symons productScreen analyses of ores, both carloads

5, 2 Wet-Milling and Concentration

Table No. 8 Table No. 9

Crockett tests on cuts of head sample of ore from the first carload at various meshes-of-grind and Davis tube tests on screen-fractions, of a 14 Ib. lot of -14 mesh head sample (Table No. 9 Crockett Tests) confirmed that most of the apatite was liberated at a coarse grind, 20 to 28 mesh, and also, although the rougher-concentrate was much cleaner than that recovered by dry treatment, that the magnetite concentrate must be reground to reduce the phosphorus content to meet the o. l per cent max. specification. Furthermore, in no mesh-fraction was the phosphorous content low enough to indicate a classification point at which the rougher-concentrate may be split to recover part of it in a low phosphorus product. This meant that all the rougher-concentrate must be reground to separate the minute grains- of apatite by attrition. A wet circuit was developed accordingly and, by a process of trial and error, improved during the course of the program.

3 B i 11 in g; - c ir c vi it s

5. 3. l First Carload

The circuit which was adopted for the first carload was as follows:

The ore, stage-crushed to minus 1/2 inch in an 8" x J2" Hadfield jaw- crusher and 20 inch Symons cone-crusher, was fed from a steel bin of 6 tons capacity, via Hardings 472 constant-weight feeder, to a 3 1 x 6' Marcy rod mill carrying about 1600 Ibs of mixed l and 2 inch steel rods and turning at 29 rpm. Pulp density in the mill was maintained at about 70 per cent solids. Mill discharge, conveyed by bucket elevator, was screened on a 30" x 60" Hum-mer screen from which oversize was returned by gravity to the rod mill. Screen undersize, diluted to 25 per cent solids, was pumped to a two-stage, wet-belt Roche magnetic separator carrying 10 inch belts running at 206 ft. per minute. DC amperage on both rougher and cleaner belts was variable through rheostat control, 110 volts, 14 amps maximum.

The Roche tailing, thickened in a 5 ft. cone, was pumped to a No. 14 Deister table where it was deslimed and the slims sent to waste. The table rougher-concentrate was retabled and the cleaner-concentrate, about 2 per cent of the ore, assaying 43^o Fe and 8. 7% "PzOtj and contain ing about 1. 7 per cent of the apatite in the ore, was discarded. Cleaner- tailing was combined with the rougher mid plus tail, thickened and filtered. The filter cake, containing about 9 per cent moisture, was drummed.

The grade of the ore of the first carload was such that by this method of treatment of the non-magnetic tailing the apatite product met specifications and recovery was fair. It was not until further study of losses in slime fractions revealed the magnitude of these losses that steps were taken to improve the flowsheet. The lower grade of ore for Mill-Run 15, and particularly that of the second carload, demanded that further modifications be made in the flowsheet, and the treatment plan was changed accordingly so that losses to slimes were reduced from 18 per cent to 5 per cent of the total apatite.

Roche middling was pumped to an Akin spiral classifier from which the overflow was thickened and ultimately filtered for test-work on recovery of niobium. This procedure was modified in treating the second carload to reduce the loss of both magnetite and apatite at this point. Mid. classifier sand was reground in a 24 inch Hardings conical mill containing 400 Ibs. of 3/4 inch to l inch steel balls and returned to the Roche rougher- feed. Roche cleaner-concentrate was stockpiled, composited, remilled in a ball mill and recleaned on the Roche.

Because of the mineral-association of the ore and the great differences in hardness of magnetite and apatite, there was pronounced selectivity in grinding. To avoid overgrinding the soft, easily-slimed apatite, the rougher-stage oi" magnetic concentration was performed at as coarse a grind as possible, consistent with liberation of the apatite from both the magnetite and the gangue. One of the most evident characteristics of the ore was the ease with which liberation could be effected at a natural grain- size of the ore. This was particularly noticeable in a later Aerofall test.

The mesh-of-grind that was most satisfactory for the immediate purpose of the mill-tent was 26. At 20 mesh, liberation of apatite from magnetite was as good as at 28 mesh, but coarse gangue minerals and apatite-gangue middling reported with the apatite in the table product, and the lower the grade of the ore, the greater this effect. At 26 or 28 mesh, the gangue was liberated and mostly slimed and the grade of the table product improved accordingly, although Ibss of apatite to table slime was increased also.

The bottleneck in the circuit at Ottawa was the Roche separator. The rated capacity of this machine was two tons per hour, but because of the high magnetite content of the feed and the circulating load of middling, the feed had to be reduced to about 1500 Ibs. per hour. Control of feed rate at this level was difficult, the rod load was critical, and some difficulty was found in trying to keep the feed rate in balance with the magnetic separator to avoid over or under-grind ing and still run the circuit near capacity. This accounted for some of the discrepancies in the results.

5. 3. 2 Second Carload

The second carload of ore was obtained to compare the performance of a5 ft. Aerofall mill set up temporarily in the Department of Mines in November1955, with that of the 3 1 x 6' Marcy rod mill used to mill the ore of the firstcarload.

In these tests, the wet-circuit differed slightly from that used for treating the first carload in that rougher-concentration was performed on a Crockett wet-belt separator instead of on the Roche, and the Roche separator was used for cleaning reground rougher-concentrate only, the regrind mill made part of a continuous circuit and the difficulties of batch operation obviated. The combined Crockett and Roche tailings were classified in an Akin spiral classifier, the overflow thickened and the apatite recovered therefrom by f roth-flotation. Classifier sand was tabled, the table rougher-concentrate retabled and the cleaner-concentrate discarded. The combined rougher and cleaner-tailings were thickened, filtered and drummed as previously. Insufficient ore remained to run a mill test in which the apatite was recovered by flotation only, although the results of small-scale tests indicated that this might bc tlie most efficient method of effecting high recovery, particularly from low-grade ore.

lie Crockett concentrate was classified-in a Dorr rake classifier from which the sand was reground in a ball mill discharging via bucket elevator and pump, to the Roche separator to which the rake classifier overflow was fed also. Roche middling, dcwatered in an Akin classifier, was reground with the Crockett sand in the ball mill and thus returned to the Roche feed; the overflow, thickened in a cone, was cleaned batch wise on the Roche and the cleaner-slime reserved for further test-work on the recovery of niobium.

Roche cleaner-concentrate was dewatered and filtered. Thickening was performed in both rake classifier and spiral thickener to compare the efficiencies of these units, and both Dorrco and string filters were tested during the run. A rake classifier was found to be superior to a spiral thickener for washing residual apatite slime from the magnetite and was generally more efficient in operation; rake classifier sand to the filter contained 25 per cent moisture and filter capacity was increased accord ingly. Because of the rapid settling rate of magnetite, the strain on the motors and rakes of a spiral thickener was severe and shutdowns frequent.

The cake thickness on both the Dorrco and the string filter was 3/4 to 7/8 inches, at which thickness, the cake from the string filter was usually slightly drier than that from the Dorrco, but the Dorrco handled a greater range of particle-size without losing cake. The string filter did not load well if the feed contained less than 40. per cent of -200 mesh material, whereas the Dorco was not affected by feed as coarse as rougher-concen trate. The filtration of concentrate is considered under a separate heading.

5. 3. 3 Magnetite Concentrates

At 20 to 28 mesh-of-grind magnetite, rougher-concentrates assayed con sistently 0. 4 to 0. 6 per cent phosphorus. Except for a short trial run to establish the proper conditions for remilling, all the magnetite from the first carload was composited and then milled and cleaned in one lot. The results showed that grinding to minus 40 to 48 mesh (35 to 45 per cent minus 200 mesh) was sufficient to liberate the residual apatite and pyrrhotite from the magnetite so that after cleaning and recleaning on the Roche separator the final concentrate might assay 0. 06 per cent of each of phos phorus and sulphur. Efficient washing in the final cleaning-stage was most important, as a large proportion of the phosphorus was due to included apatite slime. The magnetic separator was heavily overloaded at times, and the concentrate was not washed properly on the cleaner-belt for which reason, the phosphorus content of some of the lots of the cleaned magnetite was as high as 0. 12 per cent. This was a mechanical problem that was solved by adding a recleaning-washing stage without further grinding of the cleaner-concentrate. Negligible magnetite was lost in this stage. Assays - of properly washed magnetite concentrates from both carloads were listed in Table No. 3. : ' . . ' . , . ..--. -- .

3. 4 Summary of Mill-Runs 18 and 19

Product.

Crockett feed*

Crockett Const.

Crockett tail.

Apatite, table.

Total slime

Mag. Cl-conct.(average)

RecleanedMag. Conct.

Mill- Run.

18 19

18 19

1819

1819

1819

1819

1819

Wt. '/o of Ore

21.18.

5.9.

72.70.

7170

09

59

23

-200 Mesh.

14 19

8 14

1728

37

8585

4049

4146

HCl-sol Fe.

48. 47.

63. 63.

3.3.

1.1.

9.7.

65.65.

65.65.

20

5 0

61

3877

9443

11

33

Distribution ^o HCl-sol

P2Oc; F e. P?.Oq

9. 11 8.29

1.08 1.03

33.228. 0

34. 8329, 37

25.2524.42

.285

.208

. 140

. 125

.6

.7

1. 11.6

97.697. 2

79.67.

15.29.

2.1.

1.1.

91

53

38

21

* Calculated from weights and assays of products. '

6. ACKNOWLEDGMENT

The facilities of the Department of Mines and Technical Surveys were made available by the courtesy of Dr. John Convey, Director. The work at Ottawa was expedited by the co-operation of the staff of the Department, particularly Dr. K. W. Downes, Chief of Division, and Mr. L. E. Djingheusian, whose assistance is acknowledged with thanks. Dr. A. T. Prince and Dr. T. Pv. Ingraham supervised and are continuing the research on the recovery of niobium, Mr. A. J. Boissonault, Mill Superintendent, a*nd Mr. Wm. Jenkins, Engineer, both of the Department of Mines staff, assisted with mill operation and sampling; Mr. Graeme D. Weaver was employed as assistant during June and July. The analytical work was done - chiefly by Mr. D. J. Charette arid Mr. G. H. F aye.

REPORTS OF PREVIOUS TEST-WORK ON NEMEGOS OREAND REFERENCES.

(1) Department of Mines and Technical Surveys, Ottawa, Investigation No. MD 2758.

(Z) Aer of all Mills Limited, Report No. 54005, May, 1954.

(3) Department of Mines and Technical Surveys, Ottawa, MD Test Report No. 706-OD, January EI, 1955.

(4) Department of Mines and Technical Surveys, Ottawa, I. M. Report No. 335, June 10, 1955.

(5) Dings Magnetic Separator Company, Report of June 8, 1954.

(6) W. JU Maxson, F. Cadena, and F. C. Bond, Grindability of Various Ores, AIME Trans. Vol. 112, 1934, pp 136 - 140.

A SCREEN TESTS OF SYMONS

Screen

1/2"

3/8"

1/4"

4 Mesh

6

8

10

14

20

28

35

48

65

100

150

200

-200

Total

CONE- CRUSHER PRODUCT ' '-

j

20- Ton Lot

^o on Screen

5.

10.

24.

9.

5.

8.

2.

5.

5.

3.

5.

3.

3.

2.

1.

1.

100.

7

0

8

.9

6

4

5

3

6

3

8

8

8

5

4

4

2

0

Cum. i Glo Retained

15.

40.

50.

56.

64.

66.

72.

77.

81.

86.

90.

94.

97.

98.

98.

-

7

5

4

0

4

9

2

8

1

9

7

5

0

4

8

i

o/o Pas sine' 9

94.

84.

59.

49.

44.

35.

33.

27.

22.

18.

13.

9.

5.

3.

1.

1.

3 ;i

3 11.5 !

6 li0 ii

6 iii

!

8 1'l

i

8 j

9

1

3

5

0

6

2

34- Ton Lot

) on Screen

3.5

7.2

19. 7

13.2

6.0

7.4

4. 0

6. 1

6. 4

2. 3

6.0

4.8

. 5.0

3.5

2.0i

.9

2. 0

100. 0

Cum. 7o Retained

10.

30.

43,

49.

57.

61.

67.

73.

75.

81.

86.

91.

95.

97.

98.

7

4

6

6

0

0

1

5

8

8

6

6

1

1

0

f. ' ' '

'i. \

*ss

Vo Passing !-

96.

89.

69.

56.

50.

43.

39.

32.

26.

24.

18.

13.

8.

4.

2.

2.

.

5 'j

3

6 i

4 i

4. .i

Q j

0

9

5...''

2 . !

4

4

9

9

0

A 200 lo. lot similar to (A) was sent to Allis Chalmers Manufacturing Co. , Milwaukee, Wis. , for grindability test.

A l ton lot similar to (D) was sent to Battelle Memorial Institute, Columbus, Ohio, for test work.

CROCKETT TESTS, JULY 4, 1955.

Feed: Head-Sample, First Carload

Test No.

•1

2

3

4

Mesh- of- Products

Grind

20 Mag. Conct.Tailing.Total *

24 Mag. Conct.TailingTotal* '

28 Mag. Conct.TailingTotal*

35 Mag. Conct.TailingTotal*

, Wt. "/o Assays ^oFe P2O^

73.26.

100.

70.29.

100.

70.29.

100.

69.30.

100.

138700

891100

920800

623800

63.4.

47.

63.4.

46.

63.4.

46.

65.4.

46.

001118

625242

894560

01 .6768

2.3.3.10.

1.34.11.

1.34.10.

i " *

34.10.

035460

551003

461496

890998

Distribution 'JoFe

97.2.

100.

97.2.

100.

97.2.

100.

97.3.

100.

730

280

280

000

P2C

14.86.

100.

10.90.

100.

5;90.

100.

5.94.

100.

^

000

060

660

640

# Assay calculated from assays of products. ' Micro-examination of the products showed progressively better liberation with finer grinding. Middling product was chiefly apatite enclosing small grains of magnetite. _______________________________________~-~^—*^^~—

The following figures, giving the percentages of -200 mesh material in each product of the crockett tests illustrate the preferential grinding of the apatite. The median diameters (*) of particle-size in the products are expressed in microns.

Mesh-of-grind of feed

of -200 rnesh in products

20 24 28 35

Median

Mag. Conct.Tailing

diameter of productsMag. Conct.Tailing

6.015. 3

386271

3.920.2

353239

7. 120.7

37 0(? )233

12.022. 5

261197

(*) Maxson, Cadcna and Bond, AIME Trans. Vol 112 (1934) pp 137 et seq.

Viv.evood Engineering d Construction Ltd. ?.0. yox S095HO Ontario Street, . ' Boaiv.svillc, Ontario ATTN: Mr. C,E. Bovaird, P.Eng,

President

February 16, 1972

SC;\EF.N' ANALYSIS; Xill Products -- Nemegos Ore

FOR: Fetio Industrial Developments Ltd., 14 Dorchester Avenue, Box 46, Postal Station U, Toronto 18, Ontario

4- 8 mesh, 7. weight

10 . ; ,, . ; '

-. 28

'.-: 35' 48

65

100

150• : 2 00 .

270325

-325

o.06 '-0.060.07

0.55 - 3 .24*

16.09-'8.32

6.92*

23.79

TOTAL - 100.00

l

.; . -J.R, WarrenLab Superintendent

SCHEDULE "A"

DENSE-MEDIA S2PAUA.7IOXRcrr.r.r.Ncr.3: TncRart, "Handbook of MinerM DrM.iinR,"

Wiley, New York, 1055. MUclic'l, "Cord Preparation," A.I.M.E., Nc\s- York, 1050. Lowe, Heavy Penalty How Sheets, .Vim'n; Conor. J., June, 1937. .

Dense-media separation is employed to bcncficiate many mincr:vl products including coal, iron oro, r.gi;ro- jixto materials, etc. Preparation of n liquid suspension o[ finely divided high-gravity solids can produce n stable lush-gravity bath in which separation of solids can bo tlTcctod. Many typos of solids have been used to obtain this high-r.ravity medium, but the magnetic solids fcrro- tilicon and magnetite are used most extensively. Theso two solids, cither nlone or in combination, can obtain a luit able dense medium over a gravity range of 1.25 to 3.4. A special new spheroidal ferrosilicon medium offers potential extension of 3.7 gravity.

Dense media is applicable on any oro in -which tho valuable constituent has an appreciable gravity differ ence from the gangue constituents. In coarse-ore heavy- media separation plants the limiting bottom size of dense- medium feed is 10 mesh and the upper size limit is 12 in.

The dense-media proceas perform one or more of tho following functions: (1) rejection of a finished waste prod uct and nn enriched concentrate for further concentra tion, (2) production of a finished concentrate and a rojeet-•b'e waste, (3) production of r. finished concentrate end a low-grade reject for additional treatment, or (i) produc tion of a finished concentrate and a finished reject, plus i niddlinc for additional treatment.

7'Ic.2netic-raedia Characteristics c.nd Costs. The gravity selected will depend on individual ore character istics. Coal plants operate on magnetite medium which can develop gravities to 2.20. In tho gravity range of 2.20 to 2.00, mixtures of magnetite and fcrrositicon media ire used. Above 2.85, ferrosilicon medium alone is used. Ground ferrosilicon pig will permit gravities up to 3.4. Above 3.4 the spheroidal ferrosilicon medium has been used successfully.

IVi general, fcrrosilicon and magnetite media will bo finer than 05 mesh although several grades of fineness tre available. Magnetite is priced ut S25 to SiO* per ton, l.o.b. grinding plant. Price depends on the grado of medium required. For higher operating cravities a ferro- il'icon alloy has good magnetic rcsponsivencss combined v.ith good stability in plant practice. FerroDilicon prices•sill vary from S100 to SIM* per ton depending on the trade of product required. Spheroidal mcdir. command a premium price.

Donse-mcUiat'le.iit Operation. Primary sliraca and - fmcj r.rc objectionable because thoy dilute tho medium and increase its viscosity. Such slimes chould be removed prior to heavy-media separation.

I-'i;;urc 21-80 illustrates a modern dense-media flow 'Vot Hi applied in coal cleaning. The ssparatory vessel i'-'.us'.rut cd is a commonly used scraper type. Tho feed is Preconditioned 01* screen (1) to remove fines and to wet t-n product thoroughly. Excess water is drained ofT on t W i screen boforc the Iced enters the separatory vessel (2) which is filled with medium at a preselected gravity.•'lout material rir.cn to the surface and overflows t, weir ktx! is transferred to drain screen (3). Sin'.s material is

* ICiCO pricci.

Tcmovc'l ntid cVvat':'] above 'i 1.? !.vr'i'itn s'Jrfaco by b flight conveyor (4). Tlie i'jnv. inîu-n b conMnvrivJ**}' returned from the circula'.inr, vow! (0) and from ' lil heavy-medium storft^" Mump (S) r.i rc^'re'J.

J'lo.it r.nd sittk products an: fetJ to rcpiti'.r rlr:;? screens (3) and (9) or, in some small p'.v.ti. to r'S'ti'.ior.C'i coro- partments of a common rime serfSTS, Th*s prc'l'jc's i~i first rinsed with rccirculr.tcd rin*'- water R'.d Cr.r."y Trith fresh-water sprays. About l Ril./rnin. of rin;i water/ ton/hr. of rinsc.d product in usMr.Viy ne*dcd for -rH--n - products ar.c! up to 2 5.al.X(inin.)(toa)(!!r.) for 4'.0-îe?h

. material. The separated products are dswr.'.ertd on their respsctivc screens.

The medium rinsed from the products on screens '(3) . and (0) has bsen diluted with water ar.d So too iow in r.ravity to bo returned directly to the ttjwatory vc.'iil. The material ia collected in sump (10) and pumped by e. dilute medium pump (U) to the feed bos o! a porrnun'ist- drum magnetic separator (12). The drjrs-iypo Ka^.c*,ic separator with ft perraanent-mssnel Mserably U coa- monly used for medium recovery. Th* recovered rae- ' dium is returned through a demagnetising coil (1C) to the media-storage sump. In coal plants, the mspieiio.

' separator discharges a magnetic concentrate of sufT.clor.tly high gravity to go directly to ths stortse suznp. la other dcnsf-media plants, where higher opsrat'.os Gravities are required, St is sometimes necessary to incorporate a dens:- fier between the magnetic separator sad the media cir cuit to bring the recovered medium to s higher gravity for reuse.

The separator tailing (14) end/or overSow (15) can b* used us a rinse on the preconditioning screen (1). To conserve water, settling tanks (17) or cyclones aro used to clarify the underflow from screen (1). The c'.ariS'id water is recycled to the primary riass 'rous'"* U^) by rinso-water pump (IS). If the rinsa xvatcr caano* be clarified sufficiently for effective rir.se ia a settling tsai or cyclone, thickeners may be used.

TKo type of dense-media vessel shows in Fis. 21-S? has a capacity of SO tons/hr. of raw coal f*e3 per foot of vessel width when tho feed mv.crial is -J-)^ in. in sUe ar.d with tho uwal size distribution in the 4- H-'n - product. Other types of scparatory vessels wfll vary from th'.s capacity figure, and the individual oro characteristics will influence capacity ratings. The ssparatory vessel illustrated is designed to handle 12-in. maximum size. The usual size is 3 to 6 in.

A plant feed with a largo amount of fine sizes, or a plant feed sized initially At H !n-i mujt be fed to ths separatory vessel at a reduced rule to ob'aia h:.Rb. *S-

. cicncy. Feed rates as low t* 20 toas/hr./ft. of veajcl width would bs used for 3- by H-*11- *or-l 'cc^ haviag 60 per cent of tho feed in the J^- by H-â- Tho capacity of separatory-vessel accessory is increased when handling finer plant feeds.

As particle gravities of the heavy and. light fractions differ from ihe operating gravity of tho vessel. Ihe case of separation at n statistical clScicncy increases and the inefficiency ns measured by the weight of the "ta!.??!r.ced particles" decreases.

A typical analysis of sink and Coa* product*woirfit pcrccntn^c1* (0.0 per ccst) of rnisp'.ftcv^d ynr-

ticlcs at a cravity of 1.3-S2. wV.ich !s ccr.slderod to b? tl:e operatins gra^ty. The raisplacod panicle* is b?th prod ucts will then be O.fl per cent of the feed and tb* c:EcIcr.cy \7ill bo 09.1 per wnt.

KfScicuclcs p.* measured above trill r.vorapo aVc-ut P?.? per cent, when handling -rj-i-'a. coal under the coadltio:-.* indicated. The cf.icienc-y drops to about OS per cent for-r'-;5-in. coal.

Tije operating coii of the vessel shown in. Fig. Cl-S?•vrill include one operator, power for tho screens, purav*.

!j Schedule "A" - l

Moor.cticconcentrate scporator

Pl

F!oot-mo!c'ic! droin end rinse screen

-7\ . i ** " l' ' Vr^j-'Atl^i.^^.i^'ji..^- -

Axict flow low heod circytcling pump

IRecyclc-medium IconcentrotcV

Settling toftk or cyclones

Fines to treatment for

' recovery or disposal

Oilole- medkirn tump

Dilute-medium pumpRecycle-r'mse-

voter pumpFio, 21-S9. Typical donsc-iuoJin flow *boot for eoal-clcaning plant, (Courleiy ofFvtl Prtttti* Co.)

Sink

Medio Overflow

Tio. 21-00. Modified a;ilrtl c',nwifier-typo donso-tncJU soprvratory vot^l. (Ceurtrty of .Vin* Smt'.Hr Su

Schedule "A" -

LOw-grcv.Iycomp3rime.it compcrtmen!

O Flos! ©Middling OSinX iililil Low-orovity r/jrj KijJi-srovitymsdium . medium

Fio. 21-91. Ilevolving-drutn-typo d'njc-mcJisv sfparatory vossol. (Courlety of Weitern Machinery Co.) .

Outlet sluice

Intel 'sluice

Fio. 21-93. Tb* Dutch Butt Mine* cyrioo* tcptr*Vor.

-Droin outlet -

Flo, 21-92, Drag-t&nk-typ* deDss-medi* Mp&ratory vessel, . (fjourtoiy tJIAnk-BM Co.)

r.

('c., of 0.5 to 1.0 hp./ton-hr. of capacity nnd maRnctie tocJiura losses of 0.3 to 1.0 Ib. of magnetite for each ton of coal processed.

The complete installation cost of this vessel in o coal- preparation plant, without preliminary dry-screening fa- tliities nnd without loading facilities, will rance from SSOO to S1500* per ton-hour capacity on plants in the 100 to 400 tons/hr. size.

Eeparatory-vessel Types. In coarse dense-media fork three basic types are most commonly applied. They include (1) modified-spiral-classifier-type vessel [Kg- 21-00), (2) rcvolvine-drum-typo vessel {FiB. 21-91), ttd (3) drng-tank-typc vessel (Fir.. 21-02). The classi--*.~- a nd drum-type vessels have been used extensively in treating iron ores. The drag-tank type is usod in coal treatment. Each of those types has individual tidvan- t^Ks and manufacturers shou'ic! be consulted for rccom- t':ndations on (specific problems for selection of the most•"HaWo vjsstl. Other types of vessels arc available tind 're equally applic.'iblo to separations handled by the*'!'J:fifn';nt illustrated.

Tino-particlo Cloaking V7ith Donso-modiB Cy- t'or.o;. Tlii material lo ho treated in pulped with the ^t'JiuTn, arid this pulp is fed tnnf;cnti;illy through the '-•id inlet (1) of Fit*, il-03 to tho tihort cylindrical nection (i). The nhort cylindrical section (2) carries the central' I'.CO |.rir.M.

"vortex finder" (3) which prevents short circuiting within the cyclone. Separation is made in the cone-shaped part of the cyclone (-1) by the action of centrifugal r.ad centrip etal forces. The heavier portion of the material leaves the cyclone ut the apex opening (5) ixnd the !ish**r por tion leaves tit the overflew top oriSco (O).

The sharpness of separation of the mineral frora the gangue is dependent on (l) the specific gravity of tho media, (2) the cleanliness of the media, (3) the flic of the internal openings in the cyclone (feed inlet, apes, nad vortex) nnd (-1) the pressure at which the pulp is intro duced into the cyclone. Included cone angle on densc-

, media cyclones has been increased to nround 40 dcg. ia many iron-ore cyclone plants. There is a trend toward the use of smaller multiple cones (10 and 12 in, diameter) rather than fewer and, larger cone*.

Dense-media cyclones are generally operated 12 to 55 Ib./sq. in. Higher pressures increase capacity Vut r.cccl- cratc wear. Remittance time of the ore particle? is very short in the cyclone, and a larger volume of medium i* circulated with caeli ton of ore .fed to the co:\e. Loss of medium i* hi;;!wr in cyclone plant* (5 to 10 Ib./ton of ore treated) tis compared with coar*e-ore dtnte-eiedia plants (0.5 to 1.6 Ib./ton). Cyclone-plant manpower retirements are Jow mid cfiicieacy 5j hi;'\. Two 10-;n,- diarnotcr cyclones can handle over 100 tons/hr. of —}i- in. feed.

Schedule "A" - 3

SUMMARY OF lat^RAL-DMiS-LuG T2ST3,

KULTI-MiWillALS LIMITED.

Prior to 1955 si/all-scale tests showed t;;at either the magnetite or the

apatite might 'be recovered from the magnetite-apatite ore of No. 6 orebody } but

in no instance was the co-recovery of these Minerals investigated. Furnace

tests on two carloads of dense } lump magnetite indicated that this material

could bs used directly as open-hearth charge ore in spite of the high titania

( ten per cent or more) content. Pending active mining possible sales outlets

for lump magnetite were not pressed. In 1955 and 1956 large-scale research

work Xsras done on two major problems,-

(1) The recovery of magnetite and apatite ( and pyrochlore) from ore from.

No* 6 orebody,

(2) The recovery of pyrochlore, and as a corollary, of niobic oxide from

the calcitite phase of No. 8 orebody.

This programme was supplemented by small-scale tests in 1959. on diamond-

drill core from No, l orebody. The objectives were to recover magnetite, apatite

and such other minerals as might be indicated.

The milling characteristics of the magnetite-apatite ore of No* 6 orebody

have been studied thoroughly at the Department of Mines and Technical Surveys,

Ottawa, and a flo\\rsheet developed for a concentrator to recover both the

magnetite and the apatite efficiently. Recovery of at least 95 par cent of

the total iron ( 98 to 99 per cent of the magnetite) and 90 to 95 per cent of

the apatite may bs expected in hi^h-grade concentrates. PelletiBing and sinter

ing teats were run on both the magnetite and the apatite concentrates; both

products were amenable to agglomeration without further grinding and without

binder. The recovery of pyrochlore or of ni ooic oxide was shown to be feasible

mctallur^i cally , but uneconordcal at present market 'prices.

In 1955 i-j". H. L.Garvio, P. ilng. j directed the mining of representative

ore from two outcrops in No. 6 orebody in V.D 2?6, Mciiau^ht Township, Ontario.

Two carloads of this freshly broken ore, ag^reâtin^ ?-3 tons, v:ere shipped to

the Department of lines and Technical Surveys, Ottawa, v;hero a mill-test was

run under ivy supervision* The analyses of the two carloads agreed vrell vath

the calculated assay of the entire orebody as indicated by diamond-drilling*

as noted below,

Acid-sol. Fe. In.

Car. Ko.l. 46.4 . .72

Car. No. 2. 47.3 .?S

Av. Cores. 48*9 .82

On the basis of the these

of the ore in the two carloads

Tit ani f e ro u s rna^ne tit e { ,-f )

Apatite

Pyrrhotite

Gangue (remainder)

S U A fn * f\ O -! f\ . t yJt:' i lUo* olt/o. t p *i ci

.82 10.85 4.97 1,30

.74 6. 17 5/72 4.05

.83 9.19 4.44 2.03

asssys the calculated Kiineralogic'al

were,-Ko. 1. Ko.

VVt./i Vol. )i) iVt.J^69.0 59 71.3

25.7 35 19.3

2.1 2 1,9

3.2 4 7*5

CaO. H

15.00

10. SO

b2o5,.15

.15

compositions

2,

Vol.*62

27

2

9

(,f) Includes manganese, as KnO.

Er-ccept for a higher titania content and a larger proportion of gangue in

the second carload the txvo lots were essentially the same, and tha sanie

description applies to both. The chief minerals were magnetite and apatite.

Ga'-Vâs ;rdnerals consisted of ferro-îasnesian silicates, chiefly asêrite-

auvito and biotite, with ninor amounts of nepheline and feldspars plus about

^ ;;-;r cent of pyrrhotite '.ri. t h v;'.".ic!) v;ere associated very ninor amounts of

cli-ilc'Kjyi'iLo a'id pyril-;;, ',,o r.iobi r -be?.rJ r:,-, :.'.lneraln c-'-uld be identified by

. .tier-''-- 1 or -moi-G-exa' 'ii nation , nor c.^,''i i, ut\A-"--.ferous r.Jaernls be identified

a.- :-;uoh. The .!.i:..'2rii t. ( ; - r 13?. n ot occur as d!.;- M net -.rainp as far as is-kncwm

~ 3 ~

but as exsolution 3.ar.ellae on the octahedral planes of the magnetite. Exarnin-f

ation of polished sections showed that these lamellae are quite uniform in

thickness, mostly less than one raicron, and spaced two to five microns apart.

Tiie specific gravity of the ore v:as 4- 1?" equivalent to 260 Ibs per cubic foot,

or 8*6 cubic feet per long ton, in place. '

The najor portion of the mill-test involved experimentation designed to

determine the optimum conditions for recovering the magnetite, apatite and. '-

pyrochlore, by wet-magnetic concentration, froth-flotation and leach-extraction i

respectively. Supplementary techniques were investigated to improve costs

and/or recovery; these comprised s;rall-, and pilot-scale tests. The results

of this programme not only confiraed those of preliminary work, but showed that

the iragnetite and the apatite could be separated, and recovered in high-grade

concentrates. Recovery of pyrochlore from this ore was not encouraging,

because two-thirds of it reported with the magnetite.

One of the most evident characteristics of the ore was the eass v.ith which

the major portion of the apatite was liberated from the .magnetite at a relat

ively coarse grind; the ore had a natural grain-size in the order of 24-28 mesh* ii

Because of the pronounced preferential grinding of the apatite during milling -

it v/as found necessary to remove a rougher-concentrate of magnetite at as -t

coarse a grind as possible, to avoid sliming of the apatite* and then to regrind :

this rougher-concentrate to reduce the phosphorus content of it to the desired :

level. Dry magnetic concentration v/as abandoned early in the programme.!

because magnetite concentrates recovered by this .method were* in all instances *

b?'.(ly contaminated ay apatite slime. The process that was adopted, end that is

reco/v:^-- b i for fuJl-fcale operation, is sijp.1.3 sai st.rrii 0ht~forw,'ird. It involves

: :-'! L'J - 'y-. "' ; o -ir." cr:icivi. v^; .t'ol'.'ov/ed ::;y convent:' 'ria] byt-"dJ.ling to about 26-rnesh,

t:;.;~':V^-i /'•.it-rr-.gf^t-i.c co-!C-.;;jtrabi ^n i.'lth in', urvcm isg milling of the rougher-

concentrate to clean the rr^netite , ati'' concentration of t'-:e apatite frorr. ths

mn-^i^tic tailin^ by froth-flotation. By this procedure 97 per cent of the

acid-soluble iron (99 per cont of the- .va&netite) and 9{S psr cent of the

apatite were recoverod. Typical analyses of the concentrates are given below,

Apatite

liberation of about 95 per cent of the apatite was effected in i;o.6 ore

at a coarse grind (r.inus 24-inesh). From the combined non-magnetic tailings ;

front the rougher-, and cleaner-stages 96 per cent of the apatite was recovered

in a concentrate assaying 35/S ^2^5 (76.&3.P.L.) and less than 2,5 Fe. This meets

the basic 75/77 B.P.L. specification covering phosphate rock currently imported.

It may be up-graded to 85/i B.P.L.i or higher, although at expense of recovery* ;

A representative analysis of the 75^ B.P.L. j,rade product is,- '

P205 B.P.L. Acid-sol. Fe. Total Fe. CaO. F. SiOg. AlgO^, S.

35-l;6 76 l.p 1.9 49.1- 2.7 4*3 1.1 0.6

This apatite concentrate may be used directly in the manufacture of

fertilizers; for the manufacture of ferrophosphorus or elemental phosphorusj

or for any other application requiring charging to a blast-, or electric-

furnace it would have to agglomerated. Pellets produced by Lurgi Ge.sellschaft

fur Chemie und Huttenwesen, Frankfort, Germany, had a crushini;-strenjit.h of -j200-250 p. s.i. Tests on a 1-ton lot of concentrate by Allis Chalrners Kanufact-:

urinv, Uonpanyi i-'lilwaukee , Wisconsin, confirmed that the concentrate may be

pelletized satisfactorily without further grinding and without binder, and

that the pellets are suitable for pyrornetaUurijical processing.

^traction of the apatite frotn tie i;a unetite-apatite ore of lio.6 orebody

:r; r'cj.d-luacriin^ v;,in st\idle.'l by riattolle i-.o.no rial Institute, Colusabus, Uriio.

Tin; t\yj:v.iu'.3 acs-v/ocl ;:.;i-'io..-. Fe, O. ^O-^j :, a'id 5-7^ TiC^. The '"dxed .fertiliser

\ ' at i.M.t'cl nor.;;ally .MG oro JM cod by leachin;j the ore with nitric acid would be

of the li : P20tj : K20 typa. About one ton of such fertilizer would be raade

par ton of raw ore treated,

i-Iaj-natite

lypical analyses of iaa^tite cj.eansr-concsntrate recovered during the

jnill-test at Ottawa on No, 6 ore and of sinter made from concentrate (a) are

given below,

Kagnetite Concentrate. Sinter.

^ minus 20;'J-jrLesh.

Assays.

H61-sol.Fe. Ti02

P.

S.Si02,

A1203 .

CaO. KgO,

V.

Note :

3B

(a)

66.3 5. 66

l! 020.054 0.21

0. 57 ^

0.14 fi 0.17 ,f 0.12

43

(b)

65.3 7.29

0.055 1.03 0. 070 0.30

0.15

66.3 5.9.2

0. 98 0.037

0.71

0.8

0.21 # 0.25 if

o, 04

(a) From first carload.(b) From second carload, recleaned; note lower phosphorus, (/f) Spectrograph! c deter/uination.

On the basis of the results of the mill-test it appears that magnetite

concentrate may be expected to contain 65-66 per cent iron and 5~8 per cent

tit?mia. Hscause of t he intimxve association of the ilmenite and magnetite

i t :i s ';0t f-; -.-a.-:-.i b.l e to sop".r;-.le t.'.uf-:fe initi^r^ls at any practical degroo of

••Mvir-v niiti on, nonce t ha t!t r.H;.\a content of thi; concentrate is a function of

\\-.^ t itnn:!a CMiitant of the IMV; oro. The j-.ho.^^horuo content of the concentrate

- 6 -

is jjoverned chiefly by the mesh-of-^rind as noted belo/;.

"s* ninus 2GO-;p.esh ^ Phosphorus in Concentrate.

25 0,540 O.OpCO 0.02

Magnetite concentrate of the' average ^rade indicated above may bs smelted

directly in an electric furnace by, for example, the Koppers-Strategic-Udy

process whereby there may be recovered (a) serr.1-steel essentially free of

titanium, that may, in turn, be refined to steel, and (b) a high-titania slag

containing at least 80 psr cent titania and suitable for further processing

for the recovery of the titanium. Established practice has shown that titanif-

erous sinter may be used in reôdar open-hearth practice as feed or charge ore,

but there is sales resistance to its use because of the titania, which in

turn may possibly cause subsequent difficulties in blast-furnace practice if,

as is usually the case, open-hearth slag is returned to blast-furnaces to

recover manganese.

Agglomeration nay be effected by sintering, pelletiîng or nodulizing.

Sinter, <gama.de in a 12-ton test at Ottawa, had an apparent density of 4-5*

hence this product would be suitable for open-hearth ore, as mentioned above*

The composition of the sinter was essentially the same as of the magnetite

concentrate from which it was macle except that the sulphur content was

decreased, and the silica content increased by inclusion of coke ash*

Half-inch pellets made by Lury. without further grinding (38 per cent

rrinus gOO-nosh) and without binder had a crushing-strength of 500-55^ p*R.i-

after bîn^ fired on a regular sintering strand. Pellets have the advantage

that th^y ar\i cc.nplot-j'ly oxidj.z?:!, are non-âi/ietic, are denser, and suffer

l o oy •i--; ( .rvd'it.''ja ir, hin'ili'-^ th'sa 3i.rit.er.

~ 7 -

Kiobiuin..

Research directed to investigate the recovery of niobium (colu^biurn) from

the siliceous ores of the "Horth 2 one" , the calcitite phase of Ko.8 orebody

and the rra^netite-apatite ore of No, 6 orebody was continued through 1955 and

. 1956. Extraction from the silicate rocks has not been achieved satisfactorily;

this remains a long-term project to be continued as indicated by conditions.

Work on the calcitite was done in Korvay under the supervision of Dr.. Bos,

and at the Department of lanes and Technical Surveys, Ottawa as directed by

Dr. Alan Prince. Progress of the work in Norway may be summarized by the

follovan^ excerpts from a letter accompanying Dr. Boe's report of August 8, 1955

" . . . The conclusion is that your carbonate ( sample 8A ) appears amenable to

a treatment similar to the flowsheet used at the Sove colunbiura inine in Norway*

only small alterations bein^ necessary . . . The following metallurgical

results may be expected:

Recovery of colunibiuin: 60,o.

Grade of pre-concentrate: Approximately 6^ Gb^Vc* ;

Grade of shipping concentrate: 50/j Cb^O^ or more.

11 . . . The results have been positive and it can definitely be stated thatt

the ore . . * can be treated according to the attached flowsheet with results

equal to or oetter than the Sove ore . . * " .

Tiie method of treatment in I-iorway involved r.ulti-sta&e dry milling and dry '

concentration, follov;ed by acid- leaching of the pre-concentrate to dissolve

calcite and apatite, and iria^netic concentration and froth flotation to remove

i.LH^netite and pyrite.

;.:bd.l-j.r rucouSvS v^s re ;ort,'sd by .Jr. I rincc folioKiri^ truatmsnt of a 6^6 Ib

i;rd fro.:; i? 156-j?-jot section tV-r?u^.h the calcitite

t -'i t; ;.::tli o of l :\j?.tr .ent v;i:. d ;. f.fer-.jnt fw. that urod in

ct ansayed c'or.; 1 1 11 ri V-\-' Ob^O/r. -

— fi —

Flotation tailing froruth-i Mil-test run at Gttava on r.agnetite-apatite

ore contained O. 5/i NbgOjj in pyrochlore and 7* 6;-i P in apatite. Although there

vias some decree of concentration of pyrochlore in this product} the anount

represented not more than one quarter of the total amount in the ore. Recovery

of 90 par cent of the contained niobium was effected, by chemical treatment} in

a concentrate assaying 33# NbgGjj. The process developed in this investigation

is feasible technically; the practicability vrill bs governed by the prevailing

price of ni obi urn oxide.

Gsneral^.

Grindo.bl3.ity of triaene tite-apatite ore.

The Bond 'work Index as reported by Canadian Alii s Chalmers limited in

Report No.3436 of June 15, 1956 ,-

i.ayi3 tit e -apatite ore, 3/4" to 28-meah .........,. 7-4

kaane tite concentrate, 2c-r.-:esh to 80;j -200 mesh... 15.2

Filtration of magnetite; and apatite concentrates.

The results o? a series of filtration tests were reported by Dorr-Oliver-

Long limited, Orillia, Ontario September 14* 1956.

l-kgnetit e * -

Design rate, usin(j a safety factor of 0.70 ....... 294 ^/sq. ft/hr.

Area to handle 1590 lon^ tons per day ............ 5^5 sq.ft.

r^te , uain-; a safety factor of 0.70 ....... 160 .r'/sq. f t/hr.

an-ile 655 lon^ tons p,.r d'.:.y . . . . . . . . . . . . . 5^1 sq. ft.

- 9

S :H-'-i-L~ j?, 1Sl5L t^ st K. i jJQj^ l or a body,,,

The core rejects from No, l, on which only preliminary, email-scale tests

were run, differed fro.-a the ore of No, 6 chiefly in the proportions of magnetite

and gangue minerals and in the ^rain-size of the minerals*

Magnetite Apatite Gangue

No. 6 70# 23# 7;b

No. l 22 2? 53 :

Whereas the magnetite-apatite ore of No, 6 was a coarse, granular asserr.blas,e

with a natural grain-size in the order of 24-28 mesh, the ore from No, l was

dense and fine-grained, mostly 60 mesh and finer. In consequence, vrhen the

latter ore was treated by the' sane procedure as had been found satisfactory ;

for Mo. 6, i.e., magnetic concentration and anionic flotation in alkaline

circuit j neither the grades of the respective products nor the recovery of

apatite was as high as expected. Collector control and pH appear to be the

critical factors, and further investigation should improve the results consider

ably-, Typical results of comparable small-scale tests are shovm below. :i

H^Rrietite Concentrate- Apatite Concentrate. '

•ji - 200 Fe/^ P -Z % -200 Fe JL B .P.L.Jg Ree 'y iS j

No. 6 40 65 0.15 (,r) 65 70 96 \0.06(^7) 1.9 76 93 l

1.5 80 88 \

No. l 38 59 0.2?(^) ' 75 2.9 70 8076 70

1.4 SO 60

(.r) Not cleaned. (.i-.'f) Cleaned.

~ 10 -

u^rriary and Conclusions.

Test-v;ork has shown that the :riagnetite-apatite ore of Uo,6 orebody/- is

amenable to treatment by a relatively simple process involving standard proced

ures of milling, wet-magnetic concentration end f roth-flotation* Recovery of

at least 95 psr cent of both the magnetite and apatite in high-grade concentrates,

may bs expected. The mill-treatment of the ore requires two separate yet inter

locking circuits, one for recovering the magnetite, one for the apatite.

Sufficient data have been accumulated on the former to justify, in rtgr opinion,

drafting a flowsheet for that portion of the mill. This has been done* Some

ininor problems remain to be solved in the apatite circuit, but the general

method of treatment has been indicated and a preliminary flowsheet drawn accord- i

ingly. Opsrating costs have been estimated on these bases.

The ilmenite cannot be separated from the magnetite by mineral-dressing

techniques. The titardferous magnetite nay be smelted directly in electric

furnace to recover titanium-free metal and a hi&h-titania slag suitable for \

further processing to recover the titanium.

Both the .magnetite and apatite concentrates may be agglomerated without

further grinding and without binder. High-strength pellets of both products

were made by reliable engineering companies. The apatite concentrate nay be

used directly, without agglomeration, for the manufacture of fertilizers and

phosphate chemicals in which pyroprocessinig is not required.

Technically feasible processes have been developed for recovering niobium.

oxide from two types of ore; the economics will be governed by market conditions

Further investigation is required to improve recovery of rnagietito and

?.,".'Lt:; . 1--'- fro 1 .-, t! 1-3 fine-f.roiiio'd ore of i lo. l orebody, on wJlch cr.iy pre.litrd.nary

•,;crk "f"..- o .vun uoiu; to d-ite.

PRELIMINARY'REPORT

RECOVERY O? RARE EARTHS., THORIUM AND YTTRIUM

FROM

APATITE FLOTATION CONCENTRATE

^February 9 ,~. 1967,

CONDUCTED FOR

Multi-Minerals Limited25 Adelaide St. W..,.

Toronto, Ontario.

i * ,

By

X-Ray Assay Laboratories Limited.45 Lesmill Road,

Don Mills, Ontario.

AIMS AND SCOPE O? THIS STUDY - .. ' . . '' . . ' ' ' J -. "

The objectives of this study were to; ' ' : . *. '.

A) Determine quantitatively the total combined rare . - - earth^ thorium and yttrium content of the apatite concentrate and to determine the make up of the . rare earth thorium and yttrium oxides obtained . ; from the analysis. ' - , *"

B) Examine the extraction of the rare earths from .'.ssolutions prepared by leaching the apatite with, ' ' (1) Phosphoric Acid and (2) Nitric Acid, - .' ; '.

c- l.

SUMMARY - ' .

: ' . H3 P04 leach , ' i '

(1) 25?o of Rare Earths remain in the insoluble.

(2) Phosphate in high concentration causes problems in the subsequent separational schemes. " '

' '. HN03 leach . '

(1) No Rare Earths remain in the insoluable. -- t . j* - *-

(2) A flouride precipitation will allow the separation !of Rare Earths and calcium from most of the other constituents - '

. as long as the phosphate concentration is kept below 556. ''* . - '

(3) The ammonia precipitation can.bs used to - . :. . , - ; separate the Rare Earths from calcium. ' - - ;

(4) This final product is almost totally composed - ' v ^. of Rare Earth Oxides. -

* -v- -

OPINIONS AND'SUGGESTIONS . '

(1) Tlae) separation of Rare Earths from thenitric acid solution is the better approach of the twostudied. -

(2) An initial KN03 acid leach followed by a flouride precipitation of the Rare Earths effectively

1 separates them from Phosphorous.

(3) The filtrate from the above may be treated for the recovery of phosphoric acid.

(4) The fluoride precipitate may be put into . solution and the rare earths extracted by moans of an ammonia precipitation, effectively separating them from calcium.

V'

f.'-[i-Ir:--

r -

fh

RECOVERY OF RARE EARTHS .

RARE EARTH CONTENT OF SAMPLE:;

Some difficulty was encountered due to the high concentration of calcium and phosphate in this material in 'obtaining reproducible values. Kowever upon taking the proper precautions the following values were obtained.

2.715S as oxides' - - '

This includes rare earths, thorium and yttrium. .

Tentative figures on the individual rare.earths. , i

indicate the following approximate composition: •.i.

Co 02

Pr203

Nd203

Sm203Y203

•Th Cu

Eu203

Gd203

3895

ly/o5f0

.1-.555 2-4?^

2 - 40/

a-,5%m O*^ X/o

ACID LEACH O? SAMPLE WITH H3P04 . ' -

1. Dissolution -The residue after leaching with 1:1 H PO^

for 4 hours at 98OC contains approximately 25 DA of total Rare Earths in the sample.

If however this residue is left in. the liquid during the subsequent HP precipitation, discussed below, - - it v;ill be almost totally decomposed releasing the remain ing Rare Earths. . ..

'2. PRECIPITANTS AND PRECIPATIONS ,

The following precipitants can be used to re- . .' cover the Rare Earths. ' . . .

FlourideOxalateAmmonia .Sulfate (partial-cerium earths only)

Of these NH3 and P were investigated. '

(a) HF precipitation in strong acid ' ' \

vrnen this reagent is used in the presence -. of large amounts of PO^. considerable contamination of ' .the flouride precipitate results from the simultaneous precipitation of calcium and Rare Earth phosphates. ' This contamination can be largely removed by repeated reprecipations using HF (l or 2). Ca*\ Kg*2, Nb, Ta,

etc., will also be precipated.

(b) Ammonia precipitant is usually.employed to . eeperate the Rare Earths from calcium by properly controll-

i

ing the pH. during hydrolysis. However it was found that Ca"1"^ and the Rare Earths phosphates precipitated instead of the desired Rare Earth hydroxides when the phosphate

concentration was high (above 10?o). Even a large number of reprecipitations (4:50r 5) were not sufficient to remove this contaminant completely. Subquently and W? precipitation was made in order to remove phosphate. The ' . resultant material was treated for the removal of calcium and the composition of the remainder ascertained. The '-. presence of phosphate was still noted in small amounts.

ACID LEACH O? SAMPLE WITH HN00 . , . .- r~—-——————-——-'———— J i '

l. Dissolution' .*

All but about 1056 of the apatite concentrate

.dissolves in the 1:1 HNOg after digestion at 98OC for

3 hours. The residue material contains no Rare.Earths.

In any case if the residue is left in the dish during the

subquent flouride precipitation it will be almost com pletely decomposed releasing any remaining Rare' Earths that might be present. ' . ' * .

2. Precipitants and Precipitations,

As noted above flouride, ammonia, oxalate, and ,. . .

- sulfate can be used as precipitants. Flouride and ammonia

•were investigated.

(a) K? precipitation in strong acid : - ''-'-

This reagent precipitates the Rare Earths and calcium together with Kg*2 , Nb, Ta, etc. Fe*-* and Al*^ pass into the filtrate at this point. Phosphate from

( the apatite will contaminate to some extent if its con** eentration is above about 55o in the solution at this'stage.

, However by maintaining the proper conditions almost all will appear in the filtrate. -

(b) NK3 Precipitation with controlled pH.f

This precipitates the Rare Earths and Fe*3Al etc', but calcium can be made to appear in the filtrate by a proper controll of the pH. As mentioned above phosphate interferes seriously in this precipitation.

However if the phosphate concentration is less than 55i one reprecipation will result in its removal. ' Kence

|r . ,

|r:

It seems advisable to combine.KF and NK? Precipitations in this order if the absence of calcium and phosphate arerequired.'

(c) Purity of Rare Earth Product

After HP and NH^ precipitations the product could contain NB, Ta and traces of Ti"*"4 Zr*4 Fe*3 if these are present originally. However of these elements only Fe was detected in the precipitate in this case. Hence the resulting product is fairly pure, containing no phosphorous and only a small amount of calcium. -. . . *

t

RARE EAP.TH EXTRACT FROM KULTI-KIK51ALS APATITE COXCr^TftATS ": :'."- IMDICATES 2.72T* P..E. CONTEXT OH 55 IBS PER TON O? OOXCENTRATS.'''-'" ;-

Rare, Earth

Ce 02

Pr203

Th 0

Ho203

LANTHANUM

NEODYMIUX

SAMARIUM

YTTRIUM ~

THORIUM

EUROPIUM

GADOLINIUM.

TERBIUM

. DYSPROSIUM

HOLMIUX

ERBIUM

- THULIUM -

YTTERBIUM '

LUTETIUK

C.

11

38

5

13

5

.1 - .5

.1 - .52-4

.1 - 15

.5-1

1 ~ ^* J. ** * s

100^

Oxide Prj.ce' \ .:..

6.05

21.00

2.75

7.05

7.80 '

' 7.50;

.. 45t00 ::,.;.L. 30.00 s

"2.75'r-;;vv^. -f ;.2.75 ' -y ". 50.00 '

4.4 . . -7.50 '

46.75

650.00

8.25

55 Ibs

,' 46.80- \

157.50 f:

113.75 . 2H.50 '-

*', *

137.75- '

33.00"

70p.30

M'JLTI-KBTERALS NON-MAGSETIC TAIUKGS

•H K03

Filter-

Cb203 (?)Plus any other

insolublos .

Precipitate

Redisolve-ttCl

SolutionHF or some other

soluble Fluoride

'.V

Filter

Solution

NH3

Precipitate

CA 'RE (OH)Strontium

etc.

Solution

Fe, Al, Phos, etc.

SUBJECT: 'Bcnoficititlo.-i G; Ap.-a.uo irom Uio - ' Nc-megos Iron Body^,-. ,y;;4 y v -5 c-, r r.

.INTRODUCTION

Several apatite- magnetite ore bodice occur in an alkaline- rock complex situated about 100 miles west of Sudbury, Ontario, ;v..v.r the tov/n of Nemegos. The laboratory and pi!6t plant testwork described in this report was done on samples of ore from two of liie known principal deposits. m the area. . .

*

One deposit, known a;; the Mnrnbor u body, consists principally of 60-7596 magnetite, 25-35';;, apatite, and minor amounts of pyroxene, pyrrhotite, nepheline, calcite, pyrochlore, and biotite, The granular apatite is emerald green in color and contrasts mark edly with the coarse grained black magnetite. 'Four samples oi ore wore received fromi this deposit. These were identified as C A- 17, CA-bl, CA-52, and'CA-57. This deposit is estimated (^to con- tniii about 5,000,000 tons averaging 70^ magnetite, 22f a apatite and 0. 26(^ Nb 2 O5 .,

The other deposit from which samples were received is knov/n as the Number 3-4 anomaly. Samples identified as GA- 53 to Ci'C) consisted of pieces of core from four drill holes and contained var iable amounts of magnetite and npatite in a silicate gangue (essentially pyroxene and nepheline). The apatite content ranged from 14V6 to 3';'.'--, li, o magnetite from.G'x.- to 2r: ,Ji/, rtnd the silicates from 51/u to wC'o. Minor amoiints ofpyrrhotit'e, calciio, biotite, feldspar, and pyrochlore v-cro also present. Diamond drilling indicated about 10,000,000 Ion:; x ri rock averaging 1596 magnetite, li). [V -'i apatite, and 0. 22uVO Nb?.Oo. r'.'icroscopic examination of r.arnplc:; from both typos of ore indicated ; ;. ii. ii'peration of the npatito from UiO other minerals v/as metallurgical.!; .•.M.i:'.;;'}.ctory at 8b'',v minus ^b ir.o .

('i riiK/jo/yical 53u'rvoy of Canada Pr.p^r 1)7-8 - - Department o! Iv'i:---:'

ffg?g??3^^

A more detailed account of the mineralogical composition of these samples is given in Appendix A.

The objectives of the test work described in this report were:

(a) To determine the quality and acidulation properties of an apatite concentrate made from the ore.

(b) To make a rough estimate of the capital and operating cost of a beneficiation plant to produce 250,000 tons of apatite concentrates per year. The magnetite in the ore was considered to be a waste product with no specifications regarding purity.- .

SUMMARY '

Laboratory tests run on apatite-magnetite samples from Neme gos, Ontario indicate that a flotation circuit followed by low intensity magnetic cleaning will produce a concentrate assaying about 84, OX BPL, O, 696 Fe 2 O3 , and 2. 696 F at about 8096 BPL recovery. This circuit is essentially the same as the circuit worked out by the Canadian Bureau of Mines with the exception that the bulk of the magnetite is removed by flotation rather than by low intensity magnetic separation. If the magne tite were to be recovered as a low PzQs product, the rougher magne tite separation should be made using magnetic separators.

The average BPL content of the two known major deposits, viz., No. 6 ore body and No. 3-4 anomaly is about 17^ BPL. A pre liminary economic evaluation indicated that this grade was below "cut off" for a plant producing only a phosphate concentrate. A small tonnage in the No. 6 ore body consists of material assaying 31. 896 BPL, (Sample C A-57). It is estimated that a 100 ton/hr, plant concentrating this material would produce 250,000 tons of 8496 BPL concentrates per year. The "ball Park" cost estimate of building the concentration plant is ^1,700,000. The plant level operating "ball park" cost esti mate is 33. 33/ton of concentrate.

Acidulation tests indicate that the material could be acidulated with H2 SO4 but that filtering would be considerably slower than •acidu lation with Florida phosphate.

Laboratory and pilot plant tests were carried out by Messrs. Kauffrrian, Haseman, Snow, and Ziemer.

•METALLURGY

Previous Work

The Canadian Bureau of Mines developed a flowsheet* 1' to produce both a salable magnetite arid apatite concentrate from the non- silicate No, 6 ore body. This process produced a magnetite concentrate by crushing and comminuting the ore to about 28 mesh, making a rougher magnetic concentrate by low intensity wet magnetic separation, regrinding the rougher magnetic concentrate, and cleaning it by further magnetic separation. The non- magnetic fraction was subjected to a fatty acid and Xanthate flotation to produce a low-iron apatite concentrate.

In February, 1958, a sample (C A- 17) from the No. Gore body was sent to research for flowsheet evaluation. A satisfactory grade and recovery was made on this sample by low and high inten sity magnetic separation. The results of these tests are described in MRL-1122. Subsequent tests on other samples, however, indicated that although satisfactory grade could be produced by magnetic methods, the PzOs recovery would be quite low (less than

High intensity separation precludes good recovery because many high grade apatite grains contain trace inclusions of magnetite and thus report to the magnetic tailings along with the pyrrhotite, augite, garnet, and other magnetic impurities.

Since the magnetite is a waste product (without Pa Os speci fications), the high capital cost associated with magnetic separators- can be avoided by making a rougher apatite concentrate by flotation. This concentrate is then cleaned by removing the pyrrhotite by a Xanthate \ 2 ' float and removing the remaining magnetite by wet low intensity magnetic separation.

( x) Investigation of Recovery of Magnetite, Apatite and Pyrochlore from Ore of No. 6 Orebody of The Nemegos Property of Multi- Minerals Limited. Toronto, Ontario, at. The Department of Mines and Technical Surveys. Ottawa, Ontario, June 1955 - March 1956.

( ?0 In some tests, the pyrrhotite float can be made with pine oil without Xanthate.

oncentrate Quality.and Acidulation Properties

A concentrate assaying 84. 896 BPL with 0. 696 Fe2 03 and 2. 696 F was produced by combination flotation and low intensity magnetic separation. The flotation concentrate {before magnetic separation) assayed 79. 696 BPL with '5. 98X Fe2 03 . Both of these products were ground to 6096 minus 200 mesh and v/ere examined to study their acidulation properites with HgSC^ to produce HaPCX*. \ 1' "Acidulation tests v/ere made to determine the completeness of re action and to qualitatively estimate filtration properties in compari son with Florida rock.

Under similar conditions, the reaction of Florida rock with H 2 SC-4 was 9696 complete after a four-hour digestion. The Canadian flotation concentrate reacted to the extent of 91. 6Jo. The gypsum slurry produced from the Florida rock filtered about twice as quickly as the Canadian apatite products."

Experimental data is found in Tables I and n in Appendix B.

Concentration Circuit . .

Numerous flowsheet schemes which included wet and dry magnetic separation, high intensity and LeBaron-Lawver electro- ,. static separation, and froth flotation v/ere tried at laboratory level." The only promising flowsheet, however, is shown in Fig. 1. This circuit appears to function satisfactorily on both the silicate (No. 3-4 anomaly) and the nonr silicate (No. 6 Ore body) ore.

From a design standpoint, the following factors are known to be important:

l. Desliming - - The ore must be deslimed at about 325 mesh prior to the fatty acid float. Although the laboratory desliming step lost only 1.6X weight, plant scale losses would be at least 4*^ weight.

(i) Research Division Monthly Report, February, 1959, Project 970-93.

- -----5^'^^

2. Reagents - - No effort was made to evaluate various |; ^ flotation reagents. Arizona Acintol Heads No. 2122

used with Bunker C fuel oil appeared to be satisfactory from both a cost (0.047/pound f. o. b. Florida) and

f selectivity standpoint. The sulfide float is the stan dard procedure using Xanthate and pine oil. Successful sulfide floats have also been made in the laboratory without the aid of Xanthate in which case sulfide col lection is due to the residual fatty acid.

3. Conditioning for the fatty acid float - - The deslimed pulp should be conditioned 1. 5 minutes with Acintol Heads and fuel oil at a pH of about 7. 5 and at about 7596 solids.

Selectivity can be increased if the pulp is conditioned with about'l Ib./ton of sodium silicate. ( A/ However, a detailed pilot plant study would have to be made to justify this additional reagent cost in terms of re duction of capital equipment.

4. Reagent Removal - - The cleaner concentrate must be dev/atered and conditioned at high percent solids (70-75950 v/ith about 10 Ib./ton H2S04 to remove the fatty acid. The sulfide float can be made without

- ' desliming.

See Research Division Monthly Report - - December, 1958, and January 1959 - - Project 970-93.

L,ti i

COMPOSITION (in weight percent) OF CORE SAMPLES FROM HOLE R-1 (C A-52)—-——————-—

iri, :

Number Depth (ft.) Apatite Magnetite Pyroxene* Pyrrhotite Others**

CA-52A 17-50 17.5 81 0.5 l trace

B 50-100 27 71 l l ——

C 100-150

D 150-200

E 200-250

F 250-300

G 300-350

H 350-400

I 400-450

J 450-508

27

20.5

21

20.5

23.5

14.5

20.5

24

71

77

77

' 78

75

84

75

72

1.5

1

1

0.5

0.5

1

3

3

0.5

1.5

1

1

1

trace

trace

trace

....

——

trace

trace

trace

0.5

1.5

1

C A-51

Average 21.5

23

76

71

1.5 0.5

1.5

0.5

1.5

* aegirine-augite ' .

** includes biotite, feldspar, and traces of calcite, pyrochlore, and zircon.

TABLE H

CHEMICAL ANALYSIS OF CORE SAMPLES FROM HOLE R- 1 (C A- 52)

Number

C A- 52 A

B

C

D

E

F

Gr Hij

Depth (ft. )

17-50 \

50-100

100-150

150-200

200-250

250-300

300-350

350-400

400-450

450-506

BPL 96

15.02

22.81

22. 73

17. 10

17.37

17.97

20. 70

11.96

17. 92

21.09

9.94

14.99

13. 89

11.04

12.51

12.60

13.34

8.28

11.22

13.52

76.89

66. 44

72.38

75.25

76.07

72.38

65.41

74.02 -69.31

67.28

0.58

0.85

0.82

0.72

0.74

0.70

0.79;v - ; ' 0.58

0.67

.0.78

Average 18.47 12.13 71.54 0.72

Number

C A-52 A

B

C

D

E

F

G

H

I

J

TABLE HI

CHEMICAL ANALYSIS OF APATITE CONCENTRATES MADE BY MINERALOGICAL TECHNIQUES

Depth (ft. )

17-50

50-100 .

100-150

150-200

200-250

250-300

300-350

350-400

400-450

450-506

BPL 96

86.32

86.53

86.32

; 86. 53

86.32

86.10

86.53

86.75

86.53

86.10

0.09

0.16

0.05

0.09

0.07

0.07

0.04

0.06

0.08

0.11

0.33

0.21

0.18

0.14

0.18

0.18

0.18

0.25

•0.27

0.25

Q AIsOs^

0. 10

0.06 .

0.06

0.03

0.09

0.10

0.08

0.10

0. 10

0,09

F9S

3.14

3.18

3.22

3.19

3.07

3,12

3.14

3.28 1

3.27 1

3. 21 1

Average 86.40 0.08 0.22 0.08 3.18

APPENDIX A

Several samples of magnetite-apatite ore from two major ore bodies owned by Multi- Minerals, Ltd., near Nemegos, Ontario were received in July, and October, 1958, for mineralogical exam ination and ore dressing tests, One 750-pound sample and one 1100-pound sample were submitted for flowsheet evaluation and pilot plant testwork. The remainder of the samples consisted of (1) core samples from a drill hole in the No, 6 body, submitted to determine any compositional variations with depth, and (2) core samples from four drill holes in the No. 3 and 4 Anomaly, southeast of the No. 6 ore body. These latter core samples were submitted for applicability of minerals processing tests to a high silicate ore type.

Mineralogical data were obtained by Messrs. A. F. Vondrasek and W. C, Warneke.

SAMPLES RECEIVED

Sample

10 bags, -8" ore from No. 6 body Hole R-1 (No. 6 ore body) composites by

50' intervals made up of 2" cut of eachS'-r.un:17'-50'50' - 4 50' (at 50' intervals)

450 '-506'

Four cores from No. 3 and 4 ore body HoleR-36: 42'-139'

138'~199'

HoleR-42: 86'-136' 136'-246'

Hole R-54: 43'-92' 92'-140'

140'-212' 212'-313'

Weight

750 Ibs.

l Ib.l Ib. each

l Ib.

2-3/4 Ib. 1-1/2 Ib.

21b. 4-1/2 Ib.

2-1/4 Ib.21b.21b.3-1/2 Ib.

Res. No.

C A-51

C A-52 A CA-52B to C A-521 C A-52 J

C A-53 A CA-53B

C A-54 A CA-54B

C A-55 A CA-55B CA-55C CA-55D

Hole R-55: 102'~160' 2 Ib. CA-56A160'-205' 1-3/4 Ib. CA-56B205'~256' l-l/glb. CA-56C

Minus 8" ore from the No. 6orebody 1100 Ibs, C A-57

DESCRIPTION AND MINERALOGY

Sample'CA-51 (Open cut No. 6 Body)

As received, this sample consisted of a granular mixture of black magnetite and green apatite with minor amounts of pyroxene, pyrrhotite, and other minerals. Composition is as follows:

Apatite 2396Magnetite 71Aegirene-augite - 3Pyrrhotite 1-1/2Calcite 1/2Nepheline 1/2K-feldspar 1/2Biotite Trace:

100.096

Liberation of the apatite from the magnetite and gangue minerals is over 90(^j at 35 mesh.

Chemical analysis of the head sample and of an apatite concentrate made by mineralogical techniques is shown on the following page.

j Jiead Apatite Concentrate

P?,0D 10.15 39.05BPL 23.20 85.33Insol 10.51 0.19Fe2 O3 67.26 0.14A1 2 O3 1.57 0.06CaO 14.17 53.28F 0.87 3.08CI n.a.* 0.007TiO2 4.55S 0.32

* not analyzed

Sample C A-52 A to J

This sample consisted of core fragments from diamond drill hole R-1 in the No. 6 body. The samples are composites by foot intervals of the first 2" in each 5' run. These samples were examined for mineralogical and chemical variation with depth.

The samples are essentially similar in composition, physical characteristics, and liberation of apatite to the bulk sample C A-51, The average pyroxene content was slightly lower and the magnetite content somewhat higher than in CA-51.

Mineralogical and chemical compositions are given in Tables I, II, and HI, respectively.

Samples C A-53 to 56 (Cores in No. 3 and 4 Anomaly) . .

These eleven samples represent cores from four drill holes and consist of variable amounts of apatite and magnetite in a silicate gangue (essentially pyroxene and nepheline). The rocks are medium to fine grained, and are largely dark gray to black. Seams and veinlets of calcite and biotite-pyroxene are evident in some of the fragments.

Mineral compositions are given in Table IV. Chemical analy ses of the head samples and of apatite concentrates made by mineralo gical techniques are given in Table V.

The calculated mineralogical composition for each composited core and for the composite of the four cores are given in Table VI.

^JSm

lamplc C A-57 (No. 6 Ore Body)

The "as received" sample consisted of minus 8" lumps of granular magnetite-apatite ore. As in previous samples, the apatite is apple-green and the magnetite is black, Scattered grains and streaks of pyrrhotite were visible.

Mineral Composition

ApatiteMagnetite 58 Aegirine-augite 2 Pyrrhotite 1-1/2 Calcite, Zircon 1/2 Nepheline, Pyrochlore Trace

100. 096

Comparison with previous samples showed that this sample contains about 5096 more apatite. Liberation, however, is at a slightly finer mesh size, viz., 8596 at 35 mesh and about 9096 at 48 mesh,

A pure apatite concentrate v/as prepared by sink/float and magnetic separation methods. Analysis of this concentrate is as follows:

BPL . 84.7896Insol 0.24Fe2 03 0,15A12 O3 0.05F 3.17

i;'

r

E" s.m-....

p:rX 1 . ;"S:"tfi'-

APPENDIX B

Acidulations were made by the following procedure: The amount of H2 S04 used was the theoretical quantity required to pre cipitate all calcium as gypsum. The required amount of acid v/as made up to 93. 296 113804. The rock v/as then slowly added to this acid at a starting temperature of 125 0 F. in such a manner that the maximum, temperature did not go beyond 190 0 F. Water was added in sufficient quantity to maintain adequate agitation as the slurry thickened. The mixture was digested for four hours between I60 0 and 170 0 F., then filtered and washed acid free.

In the tests v/here the Flotation Concentrate was compared with Florida rock, all samples during digestion v/ere maintained at the same volumes for the purpose of comparison of filtration be havior.

One test v/as made where the acid before acidulation v/as at room temperature. All other conditions during reaction were as described above.

Table I gives the results obtained from the acidulation of , Flotation Concentrate and Non-Magnetic Concentrate.

TABLE I

Wet Process HgP04 from Canadian Apatite

Sample Mesh

Flotation cone. 6095- 200Flotation cone. 6096-200Non- Mag. cone. 6096- 200Non-Mag. cone. 10096-200

Max. Temp., 0 F

205190190190

Prod.Acid Strength

5.2812.913.412.0

96 Completion 7o of Totalof FE2 O3

Reaction Extracted

63.389.092.195.3

79.4

** **

52.3

In the sample where the maximum temperature was 205 0 F., filtration v/as exceedingly difficult because very minute gypsum crystals formed. Where the maximum temperature was 190 0 F. , filtration and crystal formation were considerably im proved.

l l

Table II shows the comparison between 609o minus 200 mesh Florida rock and the Canadian Apatite Flotation Concentrate.

ifcr.

TABLE II

Comparison of Florida Rock and Canadian Apatite Acidulation

Sample

Florida rock Flotation cone. Flotation cone.

Initial Hz S CM temp.

1250 F. 1250 F.

Room temp.

Max.temp.0 F.

190190190

Product AcidStrength

14.7314.2414.95

Completionof

Reaction

96.091.688.9

Florida rock filtered twice as quickly as the Flotation Concen trate acid with a more complete reaction. Although the quantity of P2 C-5 extracted was lower when the Flotation Concentrate was acidu lated with 11280,4 initially at room temperature, filtration was greatly improved and washing of the gypsum cake was easily accomplished. Due to the superior filtration of this sample, despite the lower ex traction, a greater quantity of the total P?,Os was recovered as 14.95*^) P2 05 wet process acid than in the test made with Florida rock.

Both the Florida rock and the second Flotation Concentrate test needed less water to maintain adequate agitation during the digestion period than did the Flotation Concentrate treated with acid initially at 1250 F.

i?Ir

WAT K; 26, 1CCO

iirt covers laboratory tests on

On tes Crin^ ek-.at drill

-af:3.\- I

and

s;ith

ens hundred pounds o' drill core ' o'.\* sor.6 OA thf No. S cc.d -i ere

for b^r)5f;cirtion t-ssts. A T the coros vhlch ccntaia

^ tho o^e Kone. T

oro axir,.;;ly ccntrJLnaci 21^ apatite and Kf;6 v ci' U- j oivj composed mostly of

d Uo-lHf;. A r&ore :: ci tfic v.i^.51??*

qS.v::n 5^ the'23;v*.i'*lc^j,T .sccllon of this report.

to rt'.c?;

objective o-/ tho Vss* vrcrV: v/^g Lo clatcrvnlns if ^VL prcciuc: c^rj.r. :.o obU.';vr.fi vhon the nov/shftc r; GTDC of LMr, O'? 1'* *-'^ l^^ :- v Ar, acdition^l cbjlsctive to r-ic-pU^* thu vVo^'ccooL '.a .uv-c p"ccos?i:\ij cools.

ore

:-,;V;l,-li.W': - ;y.:r^.:i-,:.v;:or, c-; ,v.-- --' iVo-w ThD Ka

f"":

ir

Laboratory testa macle on the sample from Keraegos, . •Ontario, Indicate thai a flotation circuit followed by low intensity Kinetic separation will produce a concentrate assaying 79. 979S Bi^L, 1. life FesOs, 0. 57^ A1 S 03 at about JE^J^Ur&SQ^cry. Flowsheets used was essentially the same as the one previously developed foraatite- mnetite ores 1 from ihi the only difference being ther/iclition of a reciear/ar ilotatioii step and a minor variation in the amount of reagents used. Tac hich J'ejOc of the concentrate is attributed to iron silicates .not rejected in the flotation and which are not amenable to i'trmoval by low intensity nagnctie separation. An increase in per cent*'

/DPL recovery csji be obtained at a sacrifice in BPL grade of tlie c one en* ^ 'Irate. Chercical analysis sho'.vs that this sample contains more iron

silicates th^r, pre\lous samples from this area. Attempts to simplify tha rAOv/shoc/t by using coarser grinds or eliminating processing steps ' ,

/e unsuccessful because of the high silicate content, and because of in floating apatite much coarser than 43 mesh.

- 2-

; o ve he-d cu^;

;. *. ' ' -' i-

O-i X

IC-sptr ' Oolites

*^ J v 'f r* ,V '" { rjJ.î .^CA. Vj^.î-C-

Ap'o cêrf X l J-v *^. Sî * *- V

Chab-vsUe Pyroxene (Ae Biotite - :5?^notlte*^

P^rrrhotite

Cocite

7.5H ' 1. S

. 5

.L 100,0

Clioza*cul atidlysis of a he&dcut v/r.s i\s foilov/s:

BPL la sol

CaO

TiQ

17.5S

iS. 27li. 028.90

O*. 55

Tho apatite i;; 909o-liberated at 28 mesh. Tho remaining lOOo of the 3.patilo is intim&tely locked with U:e znagnotite. Approxi- m^lely 'J.0% of tho liberated apatite grains coufein occluded octo^.cdroris or grains of magnetite. These- occluisions require a 48 to 05 mesh cfv'ind fei* llboi^tion.

*-~ O **

KSS3

ao;;c,d i;^ ores rf t .M b j c&'ritacd \;;.v?..1. f\ * * •*~ l ,'. "V ^ '*i * *" S O v *; "

- /*" ••.* rV^ -.. w,, s-'J.Cil ---A * U

i rtvv\5 'a, 79. 0'.ô ^-

b:c??tos? testa a'.^d-i usjjvjf the itoohec/i v&i trr;a slieve*"; th;.'t only a 75C# B'PL o?i-;xcb a 706 BPL iT.covo?;-. bcorôraUon c? oro

L 0^'--- vvWs e. T^b ;B^5 L i-ocovv^. XiCwKvôr fee fo).io"7kv^ conditions:

A ir.iiv.is 'iO mcoh cjrincl \vas required for liberation.''^.nS'-rA?.: 1!'*/

" * Ti)2 ore must b3 d^tilii:ned at rbout 325 ucjG'n prior to the fc.v,ty acid float. In th^sa toiAa sllrcc lo^s of phosphate ECcneU to

-**i:zrjrAolr.toI Heeds spec i3l (i to l mixture \7ith

ks2:'csv5;iC') arxd BviiVccr-C fuel oil \vcj.*e used sis a collector. So s-lic&'le (S-3o) 'côy uecd In ths zou^cr fieri to incroaô the ealecUvity. TUo rowjfivA rcuulr^^ncnts, based on router Alo

, oTfllbs. por*tor* A.vi!ior.s. Aciritol - H - special0. S iba. "}-rr ton l"oror;ono 0.01^3. por ton BunVer-C Fuel Oil 2. 5 iba. per ton Sodiua- SJiicnlo

,ori5*J.bs. j?ir ton Arizona Actntol - H 0. 15 Ibs. pftr ton Iisrccss.0 0. 5 Ibs. p'sr tor; Sodluxa Silicate S-35

c.a Sodium SUicate S-35

.'i* \ffftS naosssury a^lei1 delimtiig to condition ths flotation

ents at hih solids (?59i)) foi* at lcaut 1. 5Kxiiro'vGS at a pH c?r 7. 5. .

sc-jvb (10 1","^. rI ;::30iXlcn cone.) at high solids

^ ' •'***-"^----'-"'-''*ij -^p^'aw' tf m, n , r-^rT^-rr4sr^

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The tmupment required for the concentration circuit

is shown in Figure- LThe material balance for FP-15 is given below:

BM'&L ' 2lEL - SLS2L %-BPkJ^k

Mmed Product Slime Float Feed Eoughor Cone. Rougher Tails .Cleroier Cone.Clecner Tails1'^icleu'ier Cone.ECO leaner TailsSulfide TailsS,!l2icie Cone.Kc^nellc TailsPiiwOl Cone.

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18.8 13.90 18. 50 51.20

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UCOO li.C-ttO.TQHJ V

AIRBORNE SURVEY

Wilson, H,D.B.: Airborne Scintillometer Survey of Multi-Mine rale Limited, Nemegos, Ontario by Central Geophysics limited, June 18, 1955.

MARKETS

1. Battelle Memorial Institute: A survey of Markets for Fertilizer Materials in the Great Lakes Region, May 15, 1956.

2. Battelle Memorial institute: A study of Potential Markets for Magnetite Products containing Titanium, March 23, 1956.

s OH *^Z fti^. "THIS

ENGINEERING

1. Dravo of Canada Limited: An Engineering Study covering Miningand Transportation of Anomaly No. 6 material. (The'details contained in a letter to Mr. E.F. Carr dated January 20, 1958.)

Klo Re?o*T5- CM FILE FOR-THIS '

. D. BRUCE W ILSON, P. ENG. 359 Wildwood PofltY/innipeg, Man.

PKone 4-3579

M. 6. HOLDEM Box 121

Lac Du Bono.l, M.r Phone 258

June 18, 1955

Mr. John C. Rogers,President,Multi-Minerals Limited,Room 1106, 25 Adelaide St. West,Toronto, Ontario.

-

Dear Mr. Rogers,

I am enclosing the map and report of the airborne scintillometer survey of the Nemegos property. A copy of the report has been sent direct to the mine office as requested by Mr. Garvie.

I am also returning the tube of maps and the : air photographs. In the tube I am enclosing the air mosaic showing the flight lines, and also the original tracing of the radiation survey map as you may wish to make extra copies or to use it as a transparent overlay on your maps.

I hope you are not confused by the company names on the map and the enclosed invoice. We are in the process of having the company name changed from Mid-West Geophysics Ltd. to Central Geophysics Ltd., but our accounts are still in the name of Mid-West.

I hope the survey may be of some help in your exploration. With best personal regards,

Xours very truly,

M. D. B. Wilson

,fr\.-L IV.QLJJ.VVI J~J O w XiT^- -L. JjJuV/I, IJj JLjJ/.EX

OF-MItfERALS MD., NEMEGOS, OHTARIO

BY CENTRAL GEOPHYSICS LIMITED.

The survey was conducted from the air using an airborne model scintillometer manufactured by Nuclear Enterprises Ltd.. The flight altitude was kept as close to 300 feet as possible; Traverse lines were flown in an east-west direction at intervals of 600 feet using air photographs for control. In addition to the line coverage, steep hills and valleys were flown along contours to ses^ch for possible radioactive concentrations in the valleys.

The background count of the instrument was set at thirty over Lackner lake where the lake would shield off all radioact ivity from the rocks. Contouring of the map was started ^t..the count of 50 which should indicate a significant anomaly. Additional contours are at intervals of ten counts. In the north-east corner of the map sheet where anomalies were found by contour flying, the highest counting rate obtained over the anomaly is shown as a figure within a single contour. These latter rates are not directly comparable with the rest of the map because the flights were at low altitude along the valleys.

RESULTS Qg THE SURVEY

(1) As expected, a large anomaly extends over most of the area of the known magnetic anomalies from No. 6 Orebody anomaly northward. However, some of the differences in the radiation anomaly are notable. The radiation anomaly does not extend far south of NO. 6 magnetic anomaly, although this may be due to a shielding effect of the small lakes and overburden. The small anomaly on the south half of W. D. 276 seems to be largely due to topography. To the northward, ffom about claim S 53773, the radiation anomaly trends almost due northward at somewhat reduced intensity,

krather than turning eastward as indicated on the magnetic map.

(2) Another interesting feature of the large main western anomaly discussed under (l) above, is the strong center of radiation on claim S 52949- This does not seem to be indicated on the magnetic map, and does not seem to have been explored from the information on the 200 scale geological map. It seems worthy of investigation.

(3) A major new line of anomalies is indicated starting .from No. 3 Orebody anomaly and running in a slightly east of north direction along the west side of Lackner lake almost as far as the large indentation in the property to the north of claim S 73753, a total distance of some 12,000 feet. This anomaly,in general, appears almost parallel to the main western anomaly. A check with the geological map shows that outcrops do not occur in the anomaly area except for the work on No. 3 Orebody anomaly. Thus another ore zone may be present in this area instead of the syenite extending all the way to the east boundary of the property. Alternatively, the anomaly might also outline a fault zone.

The overall structural picture is somewhat uncertain. It may be that there are two large parallel radioactive zones extending the length of the property, or it may be a large'U' shaped zone because there is some indication from both the radioactive and magnetic surveys that the zones may connect up at the south end in a U shaped fold.

In any case, the radiation survey indicates that the Ho. 3 Orebody anomaly seems more probably connected with the eastern structure.

There is some possibility that the eastern anomaly is partly topographic because much of it occurs along the ridge to the west of lackner lake, but it seems most improbable that

it is entirely topographic. Discontinuities in the anomaly are probably due to low, or water shielded ground.

It appears that the anomaly should be explored by drilling to determine whether another large ore aone exists.

(4) The contour flying showed strongly radioactive zones along the steep canyons that lie just beyond the prop erty boundaries at the north east corner of the map area. These canyons resemble fault zones on the photographs and appear worthy of investigation if the porperty can be acquired.

559 Wildwood Park, VJinnipeg, Manitoba. June 18, 1955

•fo

AIRBORNE SCINTILLOMETER SURVEYOF

MULTI-MINERALS LTD.—NEMEGOS, ONT.BY

CENTRAL GEOPHYSICS LTD.

SCALE l" = lOOO* ' FLIGHT ALTITUDE - 3OO' BACKGROUND COUNT ~ 30

(T__

ORE RESERVES

1. Garvie, H. L.: Report on Property of Multi-Minerals Limited, Nemegos, Ontario, June 25, 1954.

2. Garvie, H, L.: Summary Report, Multi-Minerals Limited December 21, 1954.

3. Garvie, H, L.: Report on the Nemegos Property of Multi- Minerals IdnJLted, December 30, 1959.

g j; o N o MI c s

1. Gibbs, G.H.: Cost Estimate, Multi-Minerals Limited, No. 6 Zone, July 6 , 1968

2, Kidd, Ross: Report on Iron-Phosphate-Niobium Property, Multi- Mine rala Limited, McNaught and Lackner Stops., Ontario, June 19, 1972,

3. Michener, C.E.: Preliminary Report, Multi-Minerals Idndted, Nemegos, Ontario, October 2^, 1973*

Ross, A.H.., and Associates, 1974, Feasibility Study; Hecovery and treatment of apatite ana titaniferous magnetite by . - concentrating and seelting: by ^er.tec Resource Development Ltd.

geology ontario

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