928001 - mineral resources tasmania

928001

SUBMITTED TO: T. )~~CrtL

ACCEPTED BY: tl!f;@!Ji/COPIES TO: Mineral Resources Tasmania

]MINl;S

CRAE Report No. 19636

March. 1994

CIS Canberra

CRAE Preston

T. Aravanis

DATE:

AUTHOR:

MICROFILMEDFICH E NO.O/30b7-7/

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The content of this repon remain the

propeny of CRA Exploration Ply. Limited

and may not be published in a company

prospectus withoullhe wrinen coosem

of the Company.

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CONTENTS

1 SUMMARY

2 INTRODUCTION

3 CONCLUSIONS

4 RECOMMENDATIONS

5 REGIONAL GEOLOGY

6 MINERALISATION

7 PREVIOUS EXPWRATION BY COMPETITORS

8 E..'I(PLORATION BY CRAE

8.1 AIRBORNE EM/MAGNETIC SURVEY

8.2 GROUND BASED EXPLORATION

SOIL SAMPUNG

ROCK CHIP SAMPUNG

GROUND MAGNETICS

9 ENVIRONMENT AND REHABILITATION

REFERENCES

KEYWORDS

LOCATION

LIST OF DPO's

LIST OF PLANS

LIST OF FIGURES

LIST OF APPENDICES

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9280031. SUMMARY

CRA Exploration Pty. Limited (CRAE) is exploring the Zeehan area for a range of commodities in

various stratigraphic/structural settings. Valid targets include Ni-Cu"PGE mineralisation in ultramalic

bodies, stratiform-stratabound Zn-Pb shale bosted mineralisation in the Proterozoic Oonah Formation,

carhonated-hosted sbale mineralisation in the Ordovician Gordon Limestone and skarn-type

mineralisation peripheral to the Heemskirk Granite.

Work completed on the Melba Flats EL 43/92 in the first year of tenure commenced with a small fixed

wing airborne TEM (QUESTEM) survey. The purpose of this survey was to identify conductors to

focus ground exploration for massive Cu Ni sulphide mineralisation. Unfortunately very high

background resistivities, higher than normal flying beight (due to topographic variations) and the

resulting excessive movement in the towed receiver resulted in poor quality data.

The most prominent response observed in the QUESTEM data was a 2 km strike length anomaly

approximately 400 - 700 m east of the Cu Ni workings. A review of previous exploration and follow

up exploration by CRAE has indicated that the conductor correlates to a 50 m wide carbonaceous black

shale unit which hosts the MCKimmie and Lead Blocks Pb mines. Poor conductors are associated with

the known massive sulphide pods (chalcopyrite. pentlandite, pyrrhotite, millerite, and pyrite) at Nickel

Reward. Vaudeau and North Cuni. A 300 m moderate conductor was interpreted to extend SE of

Nickel Reward.

Two detail grids were cut totalling 27.8 line km over the Nickel Reward-Vaudeau and North Cuni

Genets Winze Shafts. The purpose of tbese grids was to facilitate geophysical surveys (magnetics and

fixed loop TEM) and auger soil sampling. To date 128 soil samples have been collected. The

maximum assays returned were 1737 ppm Cu. 964 ppm Ni. 1338 ppm Pb and 407 ppm Zn.

A total of 60 rock chip samples were taken mainly around the old Cu Ni mines and from the

Serpentine Hill Ultramafic Complex. The most sigrtificant assays returned came from massive and

disseminated sulphide samples collected from the North Cuni sbaft. These included 31.30% Cu.

2.90% Ni, 7.26 ppm Pt, 8.59 ppm Pd and 2.20 ppm Au. Nine rock chip samples where sent in for

petrology.

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D28004

2. INTRODUCTION

Exploration licence 43/92 Melba Flats encompassing an area of 16 km2, was granted on the 16th of

April 1993 for an initial tenure of one year (Plan Tv 675). The tenement lies approximately seven km

to the NE of Zeehan and straddles the Murchison Highway and the Emu Bay Railway. The area

consists of low lying swamps and is mainly covered by low scrub with some rain forest in the nonhern

porrion of EL.

The focus of CRA Exploration Pty. Limited (CRAE) in the Melba Flats EL is for high grade Cu Ni

deposits associated with the Cuni (or Five Mile) massive sulphide pods. These pods are related to a

series of nonherly trending Cambrian pyroxinite and gabroic sillldykes over a 2 km strike length that

intrude a succession of Late-Mid Cambrian volcaniclastic lithic and quanz wacke with interbedded

siltstone and shale. These sediments are regarded as equivalents to the Rosebery Group (Brown.

1991).

Massive Cu Ni mineralisation generally occur along the footwall contact of the pyroxinite dykes

(Nickel Reward, Vaudeau, South Cuni and Norrh Cuni) or within the underlying sediments (Nickel

Reward). In the eastern porrion of the EL, these sediments have been ovenhrusted by the Cambrian

Serpentinite Hill Ultramafic Complex (Brown L992; Plan Tv 680).

In addition to high grade the Cu Ni target, there may be potential for larger tonnage low grade

disseminated Cu Ni mineralisation within the malic/ultramafic bodies. Furrher, the massive sulphide

pods are also prospective for PGE and Au mineralisation. Significant Pb Zn mineralisation hosted

within black shale occur to the east (Lead Blocks & MCKimmie) and west of the Cu Ni ntineralisation

trend.

Recognition of highly mineralised Cu Ni zones in mafic/ultramafiC intrusives and adjacent sediments

warrant follow up work given the potential for an economic massive sulphide resource close to existing

infrastructure.

During the period under review, CRAE has a statutory obligation to expend $80,000 during the lirst

twO years. This report detail all exploration activities conducted within EL 43/92 by CRAE during

1993/4.

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3. CONCLUSIONS

Robinson (1959) indicated that the known lodes appeared to pinch out at approximately 30 m depth

based on the decreasing width and strike length indicated by mine workings and drilling. A majority

of the drilling targeted at the Cu Ni lodes consistp~of shallow holes rarely exceeding 30 m. No

geological explanation has been given to account!!,e surficial nature of the lodes. It is possible that

thin near venical shoots of ore (which would be difficult to intersect with drilling) exist to depth.

With over 100 years of prospecting in the area it is difficult to reason that undiscovered lodes exist at

surface, along or parallel the Cu Ni trend. It is therefore concluded that any significant massive

sulphide mineralisation in the area would have to occur at depth. To that end CRAB is undenaking

detailed fixed loop TEM surveys in the areas of known mineralisation to delineate good conductors at

depths greater than previous electrical methods. In addition, the surveys are to be extended to east (i.e.

closer to the Serpentine Hill Ultramafic Complex) to identify any parallel massive sulphide lodes.

The TEM surveys will be conducted over the areas of most significant known mineralisation (Nickel

Reward-Vaudeau and Nonh Cuni-Genet's Winze). The results of these surveys will be compared to

previous EM data to detennine the effectiveness of the new surveys. At time of wnting, ground TEM

(PROTEM) and magnetic surveys were underway.

The mineralised gabbro nonh of Nonh Cuni appears to have an appreciable gravity anomaly. Grid

based gravity surveys will be considered.

4. RECOMMENDATIONS

A full review of the prevIOUS exploration activities is to continue. It is envisaged that this infonnation

(panicularly the SP anomalies) will be incorporated with the results of surface geochemical sampling.

ground magnetics and TEM surveys to produce a list of targets wonhy of drill testing. Drill testlOg of

these anomalies IS expected to be completed during 1994.

5. REGIONAL GEOLOGY

Zeehan and its surrounding disuicts have seen almost cominuous sedimentation. igneous actjYllY and

defomation from the Late Prmerozoic to the Quaternary. Consequently the picture of the geological

evolution is complex. The regional geology is summarised on Plan Tv 628.

The Rocky Cape Association forms the basement in NW Tasmania. This association is nOt

represented on the Zechan 1:63,360 (inch to milel sheel. In late Precambrian (- 700 Mal, a shallow

basin was forming in the stretched intracratonic area between the Rocky Cape and the Tyennan Block.

Coarse clastic sediments (conglomerate and sandstone) of the Forest Conglomerate. Donaldson

Fonnation and the base of the Timbs Group were deposited. As the intracratonic basin deepened

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928006

turbidite sequences of interbedded sands and silts of upper Donaldson Formation, Timbs Group and

Oonab Formation were laid down.

As the rift phase drew to a close. sag phase Black River Dolomite, Savage Dolomite, ?Timbs Group

magnesite horizons, and Success Creek Group limestone were deposited. Rift tholeiites and associated

sediments of the Smithton Volcanics. Bemafai Volcanics. Timbs Group and Crimson Creek Formation

erupted within the basin.

During the mid to late Cambrian, an arc-continent collision caused ovenhrusting of ultramafic-malic

rocks and related sediments. possibly from a subduction comple~ some distance east of the Tyennan

Block. The gabbro and basalts between Trial Harbour and Zeehan are of boninitic composition

present understandings of basalt chemistry require that these boninites derive from a fore-arc wedge

(Brown and Jenner, 1989).

Post-collision extension tectonics then produced troughs into which the Dundas Group sediments and

Mount Read Volcanics were deposited. A local metamorphic event dared at SOO Ma (Penguin

Orogeny), possibly contemporaneous with eruption of the MRV, affected the rift sediments in the area

of the present-day Arthur Lineament. This event probably affected the formations over a broader area

than seen today.

Latest Cambrian to Ordovician times saw tectonic uplift of the Tyennan Block. Rapid stripping of this

nucleus produced the coarse clastics of the Owen Conglomerate and correlates. As the rate of erosion

slowed, sequences became finer (e.g. Moina Sandstone). Finally, in a shon period of quiescence.

limestone of the Gordon Group was deposited.

A second phase of uplift introduced sands and silts into a shallow marine environment to form the

Eldon Group. This event took place from the early Silurian until the early Devonian. at the beginning

of the Tabberabberan Orogeny. This was followed by a period of thrusting. possibly induced by

compressive stresses caused by the rising plutons of the Heemskirk, Meredith and Housetop Granites.

To the NW of the granites, this compression thrust imbricate slices of the Timbs Group over one

another to produce the rapid. apparently quantum jumps in metamorphic grade seen III the Arthur

Lineament. To the south. the Tenth LegIOn ThruSt is the clearest evidence of the early Devonian

thrust event (Findlay and Brown, 1992). Other thrusts are likely to have developed, perhaps along the

Little Henty and Firewood Siding Faults. Continued Tabberabberan deformation folded the Zeehan

Basin formations about NNW trending axes.

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Tertiary and Quaternary erosion and deposition continue to modify the ancient land surface.

928007

• Ni as pentlandite (NizFeSJ ) and violarite (NiSz) associated with pyrrhotite to 20% pyrite and

chalcopyrite. Found at North Cuni. South Cuni and Vaudeau.

Discordant lode/vein-style pyrite-galena-sphalerite Spray. Comstock

STYLE EXAMPLE

Stratabound sphalerite-galena in limestone. Oceana

Stratabound replacement cassiterite-pyrrhotite in carbonates Renison Bell

Skarn magnetite (+sphalerite-cassiterite) Saint Dizier

Skarn pyrrhOtite C+sphalerite-galena) Sylvester

Stratiform syn-depositional pyrite in black shale. Oonah Fm

Stratiform? magmatic Cu Ni PGE-sulphides in ultramafics Cuni

The Cuni Cu Ni mineralisation. which occurs sporadically as magmatic segregations within or

adjacent to ultramafic sill/dykes over a 2 km strike length. Although the size of the deposits are quiet

small. the grade of indi vidual occurrences are impressive. The massive sulphide lenses are generally

less than 50 m long and of the order of I m wide, with several percent Ni and Cu (Blissett. 1962).

Devonian

Devonian

Stratifonn syngenetic sulpltides in Proterozoic black shale was CRAE's principal focus in the

Zeehan area prior to 1993. To date. no economic occurrences of base-metals in this deposit type are

known in Tasmania. Gross similarities can be drawn between Zeehan and the Mt Isa and Lawn Hill

areas. and on that basis some potenual existS for discovery of another Century-type deposit.

PERIOD

Williams (1958) nOted twO types of Ni ore at Cuni which he concluded belong to different phases of

the same mineralisation with segregation taking place aLdepth before emplacement. The two types of

ore observed are:

Devonian

Cambrian

Proterozoic

Devonian

Ordovician

6. MINERALISAnON

Several periods. styles and commodities of mineralisation are recognised in the Zeehan area. In

summary these are:

Terrestrial sedimentation continued in the Pennian. Jurassic dolerite sills intruded the Zeehan area.

Tertiary basalts nooded much of NW Tasmania, with remnants preserved near Granville Harbour.


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928008

• Ni as millerite (NiS) intergrown with chalcopyrite and 25 - 60% pyrite. Found as high grade

deposiL at Nickel Reward & Devereaux and low grade at North Cum.

Significant amountS of argenLiferous galena and sphalerite were extracted from North Cuni (Robinson,

1959) and South Cum (Taylor & Blake, 1952). The Pb Zn mineralisation is thought to be related to

Lhe discordant lode style deposit at Lead Blocks approximately 700 m to the east.

Along with Cu and Ni, the Cum lodes may contain signiftcant PGE and Au. At Devereaux the lode

reportedly contained 3.1-4.9 ppm Pt, 0.6-1.2 ppm Au and 34.2-43.5 ppm Ag (Taylor & Burger. 1952).

Secondary Ni mineralisation has also been observed within the Serpentine Hill Ultramafic Compiex,

600 - 800 m to the eaSt (Tv 680). The primary source is unknown but Lhought to be related to the Cum

deposits (Brown 1991).

Stratabound Pb-Zn in limestone is exemplified by the Oceana deposit where Amoco outlined a

resource of 4 Mt @ 19.4% Pb. 4% Zn and 106 ppm Ag (Taylor and Mathison. 1990). Mineralisation is

described as syndiagenetic replacement. broadly equivalent to Irish-type deposits. Indications of other

stratabound carbonate-hosLed Pb-Zn mineralisation is recorded in Amoco-EZ diamond drilling 1rom

Myrtle and Grieves prospecLs. DespiLe intensive but 1ruitlcss exploration by Amoco-EZ. the Gordon

Ltmestone still holds potential for base-metal discoveries.

Historically it has been the discordant lode/vein-style Pb-Ag mineralisation of the Zeehan and

Dundas fields that have dominated interest. Lode-style mineralisaLion aL Zeehan is usually hosted

withm graphitic shears within the Oonalh or Crimson Creek FormaLions and is thought to be related to

laLe sLage hydrothermal introduction associated with the emplacement of Devonian granites.

Within the Melba RaLs EL. a number of such deposiLs (Lead Blocks. MCKimmie. Duke 01 York and an

unnamed mine in the NE comer of the Nonh Cuni grid) occur within or adjacent to black shale uniLs.

These units occur as apan of Cambrian sequence thought to be an equivalent to the Rosebery Group

(Brown. 1991). Total recorded production from the Lead Blocks mine is 2180 t @ 65.1 % Pb & -1700

ppm Ag. At MCKimmie 56 t @ 53.8% Pb & -1700 ppm Ag were extracted (afLer Blissett, 1962).

DiscordanL lode and vein-style Pb-Ag deposits are high grade. but narrow (typically 0.3m) and with

shan strike and depth extent (usually less than 100m). In the contexL of modem large-scale minmg

pracllces. it is unlikely that such a target could be of economic mterest on its own.

In the lasL 20 years or so. stratabound replacement-style Sn deposits have been given conSiderable

"tlention. West Tasmania is well endowed with these deposits. which include Renison Bell. Queen

Hill. Mt Bischoff and Cleveland. At Remson Bell. mOSt are (42 Mt @ 1.1 % Sn) occurs as maSSIve

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pyrrhotite replacement of carbonate horiwns, although a substantial quantity of ore occurs within the

Federal-Bassett feeder zone. Source of the mineralisation is believed to be from Sn-rich fluids

emanat;ng from the underlying Devonian granite.

Magnetite skarn deposits such as Saint Dizier and Temh legion have formed in carbonate lithologies

adjacem to the Heemskirk Granite. St Dizier contains 5 Mt @ 0.5% Sn, whilst the skarn at Temh

Legion contains low percent levels of Zn as sphalerite.

Zinc mineralisation in a pyrrhotite skarn within Oonah Fm carbonates was discovered by RGC at

Sylvester prospect, west of Zeeban in 1992. Resources are estimated to be 6 Mt @ 5.5% Zn, 3.3% Pb

and 40 ppm Ag. The sphalerite is reported to be very high in Fe (around 18% Fe) which substantially

lowers the quality of this style of mineralisation.

The best reference for brief descriptions of all deposits of the Zeehan lield, although somewhat dated

now, is Blissett (1962). Early Geological Survey bulletins from between 1890 and 1910 are important

historical refcrences. A new ooסס1:5 geological map of the Zeehan quadrangle is soon to be

published.

7. PREVIOUS EXPLORATION BY COMPETITORS

Cu and Ni mineralisation was discovered in the Melba Creek area in 1893. A detailed history of the

exploration wah the Melba Rats EL area is detailed in Taylor & Burger (1952) and Ellis (1987). A

good summary of mining lease activity up to 1961 is given in Brown (1992).

In the period from 1962 to 1973, the area was explored by EZ as EL 2162. During that time

geochemical sampling, geophysical surveys (ground magnetics and TURAM) and drilling were

undertaken over the Cu Ni lodes. CSR held the exploration licence (15/76) over the Cuni field from

1976 to 1987. although little attention was paid to the Cu Ni mineralisation. From 1987 to 1992 an j I

km' area incorporating the Cuni field was exempt from Mining Act as SR 1987 No 216.

In total, 7400 t grading 7 - II % Ni and 4 - 14% Cu were extracted from the various loads (Blissett.

1962). From north to south the Cu Ni lodes are summansed with their maximum known dimensions

in Table T(after Blake, 1952; Taylor & Burger; 1952 and Robinson, (959).

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The major period of mining at Cuni ceased around 1914 due to the commencement of War I in which

the demand for Cu and Ni sharply decreased and the effort required to dewater lhe mines. Water was

reported to be flowing into the Vaudeau Shaft at a rale of over 11,000 {per hour (Taylor & Burger.

1952).

DRILUNG

A review of the literature has indicated that 66 diamond holes were drilled by previous explorers

targeting the Cuni mineralisation. An additionally 25 holes were drilled on other targets within the

present Melba Rats EL. An incomplete list of the previous drilling is presented in Appendix L

GEOPHYSICS

Various geophysical surveys have been employed by previous explorers in the Melba Flats area. A

good summary of previous work is supplied in Appendix I of Ellis (J 987). A summary of the work

completed with relevance to the massive Cu Ni lodes IS presented below.

In spite of the relatively large number of holes drilled into the Cu Ni lodes. very few of the holes were

drilled below 30 m true depth and thus the lenses may not be adequately tested. In addition. a majority

of the drilling suffered from poor core recovery (Horvath, 1957 & Bunon. 1970). In all likelihood,

only the massively mineralised ponions of core were assayed and thus the results of these holes may be

excluding a substantial disseminated Cu Ni resource.

22.9 Although Blissett (1962) states that the intrusive at

Devereaux lode has been displaced westwards by the Nevada

Fault, it may represent a sub parallel dyke system. In

difference to the other lodes. the strike of the lode is SE. No

production records. Two samples of the are assayed (max.)

6.6% Ni, 18.1 % Cu, 4.9 ppm Pt, 1.2 ppm Au and 43.5 ppm

Ag. Drilling in 1956 suggested little potential for an

economic deposit. Not visited by CRAE to date.

D28010

0.5

Table I. Summary of Cu Ni lodes within Melba Flats EL 43/92

MAGNETICS

Ground magnetics surveys have been completed over the Cu Ni lodes with varying results. Edge and

Laby (1931) and Keunecke (1953) reported thal the basic rocks failed to give a magnetic response due

to their low magnetic susceptibility or due to destruction of magnetic minerals as a result of

weathenng. Bunon (1970) indicated that small magnetic responses were attributed to the intrusives.

Unfonunately this data was presented as crude histograms along profiles.

Devereaux



928011

CSR routinely collected ground magnetic data along their cut lines but these lines were predominately

oriented N/S and the station spacing was 20 m. In 1985 CSR Jlew a fixed wing magnetic survey over

the area at 100 m FJW lines at 70 m clearance (Ellis, 1986). The Cu Ni lodes failed to be delineated

by the survey.

ELECIRICAL METHODS

The contrast between the conductive lodes and country rock at Cuni has lead previous explorers to

utilise ground electrical techniques (SP, equipotential, AC potential ratio and TURAM) for the

detection of Cu Ni massive sulphides. A good summary of the electrical geophysical work is presented

in Brown (1991). Elsewhere in the EL, CSR routinely conducted VLF surveys over their cut lines.

In passing it should be noted that with the exception or North Cuni and Genet's Winze where some

near surface ore remain, the known Cu Ni lodes gave subtle negative anomalies whilst pyritic and

graphitic black shale and pyrilised shear zones gave anomalies in the order of -200 to -600 mV. It is

suspected that this relates to the SP surveys were undertaken after a majority of are above the water

table was extracted.

GRAVITY

During 1988 three gravity traverses were completed over the Cu Ni mineralised trend by the

Tasmanian Mines Department (Tv 631). The data although not published, is available for purchase

and is presented as raw and Bouguer corrected data with density of 2.67 glcc. Anomalies of up to 0.6

mgal were observed over the North Cuni traverse between 36614D - 36631 OE and 3664DO - 366560E.

The eastern anomaly appears to be coincident with a topographic feature and thus requires further

examination. The western anomaly is broadly coincident with a ponion of the mineralised gabbro.

Minor anomalies are observed on the South Cuni and Vaudeau traverses.

8. EXPLORATION BY CRAE

8.1 AIRBORNE TEMJMAGNETICS SURVEY Plans Tv 546-53

In an effon to focus ground exploration on massive Cu Ni sulphide bodies, a small airborne EM survey

was proposed to be flown over lhe EL. The relatively flat terrain wilhin the Melba Creek Valley

facilitated a helicopter borne survey. Unfortunately due to the unavailability of helicopter based

systems, World Geoscience Corporation Limited (Aerod31a) were contracted to fly lhe Melba Rats

fixed wing airborne TEM (QUESTEM) survey

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Modelling of thin venical filaments indicated that the QUESTEM system flown at optimal flying

height (120 m) with flight line spacing of 100 m would detect near surface massive sulphide bodies

(Appendix 11). An initial flight line direction of 0700 was cbosen but had to be modified to incorporate

line llown at 1600 due to topographic and safety limitations. The Melba Flats airborne TEM survey

consisted of 304 line km. A copy of the Logistic Repon an the locations of EM anomalies selected by

Aerodata's in house programs are presented in Appendix II.

High background resistivities, higher than nonnalflying height (due to topographic variations) and the

resulting excessive movement in the towed receiver resulted in poor quality data.

The most prominent response observed in the QUESTEM data was a 2 km strike length approximately

400 - 700 m east of the Cu Ni workings. A review of previous exploration and follow up exploration

by CRAE has indicated that the conductor correlates to a 50 m wide carbonaceous black shale which

host the Lead Blocks and MCKimmie Pb Ag mineralisation. Poor conductors are associated with the

known massive sulphide pods at Nickel Reward, Vaudeau and North Cuni. A possible 300 m

moderate conductor was interpreted to extend SE of Nickel Reward. This conductor appears to be

coincident with a SP anomaly identified to be due to pyritic black shale by Horvath & O'Connor

(1958).

8.2 GROUND BASED EXPLORATION

As a result of the lack of good airborne TEM targets, initial exploration by CRAE is being

concentrated over the largest known Cu Ni workings within the EL over the Nickel Reward - Vaudeau

area (with southern extensions) and the Nonh Cuni - Genet's Winze area. Although small portions of

previous exploration grids were able to be delineated from colour 1:IO,OCO scale air photos. recovery of

these lines was difficult. A decision was made to cut two new grids (50 m line spacing) over the areas

of interest. Lme cutting was completed in early January 1994.

Mapping of topographical and cultural features over the Nickel Reward - Vaudeau grid was completed

in March 1994 and is presented on plan Tv 674. A preliminary version of a similar map of the Nonh

Cuni grid is prepared on Tv 676

SOIL SAMPLING

Auger soil sampling by EZ had indicated that meaningful trends could be delineated by soil auger

sampling in spile of swampy conditions (Hackett. 1968: Bunon. 1970). This data was presented as

hand drawn COntour maps of Ni, Cu, Zn and Pb wilh a maximum of three contour intervals.

Discussions with EZ indicated that the original data was probably destroyed.

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D2~013

CRAE decided to collected soil auger samples over selected lines to integrate with other data sets.

A total of 129 soil auger samples were collected during the reponing period along cut lines and on a

semi regional basis (plan Tv 677. Samples weighing greater than 200 g were sent to Analabs where

they were dried, crushed, pulverised and analysed for Ag Co Cr Cu Fe Ni Pb Zn by GAI40 (0.3 g aqua

regialperchloric acid digest - AAS). Although the aqua regiaJperchloric acid digest was not strong

enough to dissolve chromite, Cr was routinely assayed for in addition to the base metal elements so as

to be able to dilIerentiate between sediments and gabbroic lithologies.

Magnetic susceptibility of the samples were also measured with a Exploranium KT-5 meter in the

field. Sample ledgers and laboratory reports are included in Appendix III.

NICKEL REwARD-VAUDEAU GRID Figures 1-4

The highest assays of 1737 ppm Cu 792 ppm Ni and 229 ppm Cr were attributed to a soil sample taken

out of an old costean adjacent to the Vaudeau mine (sample 3911709). Elsewhere within the grid, a

possible mineralised zone occurs near 366280E 5365950N with a maximum of 364 ppm Cu, 519 ppm

Ni & 2725 ppm Cr with elevated Co (55 ppm).

Anomalous Cr assays (1127 ppm) returned from either side of the Vaudeau workings on 5366150N

appear to be associated with black shale although this is not readily understandable. A review of the

literature indicates that highly anomalous Pb assays returned from the eastern end of 5366150N are

probably associated with the MCKimmie Pb mine (Goudie & Halla£. 1970). The exact location of the

old Pb mine relative to the CRAE grid has not been detennined as yet but is estimated to lie within

200m of the NE corner of the grid (Tv 677).

NORTH CUNI GRID Figures 5-7

A zone mineralised gabbro was identified in the North Cuni grid near 366300E 5367700N which

returned a maximum of 423 ppm Cu. 964 ppm Ni, 1338 ppm Pb, 407 ppm Zn, 769 ppm Cr and 38

ppm Co. This area IS associated with a number of costeans was tested by diamond drill hole EM3 in

1953 which encountered 4.6 m@ \.1 % Ni and 0.82% Cu (Appendix I; Horvath, 1957) and is

coincident with a 0.6 mgal anomaly (see below).

It is important to note that a reconnaissance C horizon soil sample (3911714) taken approximately 15

m from the North Cuni Shaft returned elevated Pb (835 ppm), Zn (223 ppm) and Cr (334 ppm). Cu

and Ni were assays were not anomalous (69 ppm and 82 ppm respectively).

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928014

ROCK CHIP SAMPUNG Plan Tv 677

During thc reporting period, 60 outcrop and subcroplfloat rock chip grab samples were collected as

part of a reconnaJssancc rock chip geochemical sampling prograJn. These samples were collected by

three CRAE geologists during different periods during the last 12 months. As a result, elements

assayed, methods and laboratories used were not standard for the samples collected. Sample lcdgers

and laboratory repons are included in Appendix IV.

GENET'S WINZE

The maximum assays returned from weathered massive sulphide float with secondary Cu minerals was

26.5% Cu, 0.90% Ni. 6.13 ppm Pd. 3.06 ppm PI and 59 ppm Ag.

NORTH CUNl SHAFT

Spectacular assays of 31.3% Cu, 8.59 ppm Pd 7.26 ppm, Pt, 2.2 ppm Au, 221 ppm Ag and 0.27% Ni

wire returned from massive sulphide Iloat adjacent to the North Cuni shaft (samples 3911705 &

706). Sample 3911705 has magnellc susceptibility of 11.900 x 10.5 SI (indicating at least 10%

monoclinic pyrrhotite) and represents the only magnetic sample collected from the Cuni field.

The highest Ni result of 2.90% (2.65% Cu) was returned from a coarse grained gabbro sample with

fine grained disseminated sulphides. This lends support to the suggestion that significant

disseminated Ni mineralisation may cxist with the Cuni deposits.

In addition, anomalous Ni (2.19%) was reported from samples of brecciated gabbro with quartz and

galena veins. These samples also returned a maximum of 22.7% Pb, 17.5% Zn and 2.51 % Cu.

VAUDEAU SHAFT

Assays of7.21 % Cu and 8.94% Ni were returned from massive sulphide float around the Vaudeau

shaft. Of the 13 samples collected of gabbro with disseminated sulphides. the highest assays returned

were 0.97% Ni and 1.12% Cu, although the mean was significantly lower (0.26% Ni and 0.26% Cu).

NICKEL REWARD SHAFf

Assays from three samples of a soft dark fine grained rock (presumed to be pyroxinite) returned up to

2.26% Ni and 1.66% Cu and 0.5 ppm Au.

LEAD BLOCKS

Three samples takcn from the Lead Blocks Mullock heap returned a maximum of 2.19% Zn, 1.50% Pb

and 33 ppm Ag.

13


928015

SERPENTINE HILL

A total of 10 rock chip samples were taken from Serpentine Hill with the highest Ni assay of 0.14%.

This is consistent with values (42.4 m@ 0.16%) returned by the Montana Silver Lead drill hole M23

drilled into the Serpentine Hill Ultramafic Complex in 1957 (Appendix I; Horvath, 1957). Similar

assays were reponed for ultramafiC rocks encountered in Tasmanian Mines Depanment drill holes

SH I - 6 (Brown, 1991) drilled into the SHUC.

Nine rock chips were selected for petrological description. Samples wcre sent to Manin Gole and R.N.

England for transmittcd and rctlcctcd light lhin section preparation and description. Petrological

repons of returned samples are included in Appendix V.

GROUND MAGNETICS Plan Tv 678-79

A detailed ground magnetic survey totalling 9.0 line km was completed over the Nickel Reward

Vaudeau grid using GEM Overhauser GSM-19 magnetometers with the data collected at 5 m spacing.

The purpose of the survey was determine if the known massive sulphide lenses and the basic intrusives

could be delineated from the sediments and secondly to identify other possible lenses.

The large amount of discarded iron surrounding the Nickel Reward and Vaudeau working made the

identification of a magnetic response difficult. In spite of the cultural noise, the data suggests that the

massive sulphide lodes are non magnetic as indicated by previous surveys (refer to section 7l. This is

also supponed by the low tenor of magnetic susceptibilities measures of soil and rock chip samples

(Appendices II & Illl. Identification of possible other pyrrhotite associated massive sulphide bodies

was marred by cultural sources (railway, fences and discarded ironl. The significance of a coincident

soil Cr and magnetic anomaly at 366250E 5366150N is not known.

It is hoped that the ground magnetic coverage over the Nonh Cuni grid (in progress) will be able to

dclineate the Nonh Cuni lens by vinue of its greater reponed pyrrhotite content (Williams, 1958l.

GRAVITY Plan Tv 631 & Figure 8

The locations of the 1988 Tasmanian Mines Department gravity traverses were locmed. A 0.6 mgal

anomaly observed over the North Cuni traverse between 366140 - 366310E was broadly coincident with

a soil geochemistry anomaly thought to represent a mineralised gabbro.

9. ENVIRONMENT AND REHABILITAnON

Following approval from the Mineral Resources Tasmania 27.8 line km of line cUlllllg were completed

around the Nickel Reward· Vaudeau and Nonh Cuni - Genet's Winze workings. In addition. the

Melba Creek crossing at Vaudeau was reconstructed. No rehabilitation has been required to date.

14


oJ, ANON,

>( BLISSETT, A.H.

// BROWN, A.V.

BROWN, A.V. &

JENNER, G.A.

BURTON, eCl.

BURTON, eCl.

ELLIS, P.D.

'/~ ELLIS, P.D.. ,

FlNDLAY, R.H. &

BROWN,A.V.

EDGE. A.B.B. &

LABY. J.H..

1969

1952

1962

1992

1989

1970

1973

1986

1987

1992

1931

9280j6

RJW~:RENCES

Summary of exploration on the Cuni (Copper-Nickel) field, Melba

Flats, Tasmania. Electrolyric Zinc Company ofAuslraliasia [TCR

69-563]

Summary report on the copper-nickel deposits of the Five Mile

District, Zeehan. Unpubl. Rep. Dep. Mines Tasm. pp36 - 43

Geological survey explanatory repon. One mile geological map

series. Zeehan. Tasm. Dep. Mines

Revocation repon on the Melba Flats Exempt Area SR 1987, No

216 of II km2. Rep. Div. Mines Mineral Resour. Tasm. 1991/10.

Geological setting, petrology and geochemistry of Cambrian

boninite and low-Ti tholeiite lavas in western Tasmania. in

CRAWFORD AJ. (ed) Boniniles and relaled rocks. Unwin

Hyman, London.

Repon on the exploration work completed during 1970171 at Melba

Flats. EZCo. Reporr 106. [TCR 71-811]

Repon on the exploration work completed during 1971172 at Melba

Flats. EZ Co. Reporl109. [TCR 73-940]

Renewal report - 1986 Exploration Licence 15176, Dundas,

Tasmania. CSR Ltd. [TCR 86-2584]

Past exploration within the area of Exploration Licence 15176,

Dundas, Tasmania. CSR Ltd. [TCR 87-2678J

The Tenth Legion Thrust. Zeehan district: Distribution,

interpretation and regional and economic significance.

Rep. Div Mines Mineral Resour. Tasm. 1992102.

The prinCiples and practice of geophysical prospecting being the

repon of the Imperial Geophysical Experimental Survey.

Cambridge Universiry Press. London.

15

SCOTT.J.B. 1931. Report of the State Mining Engineer (Drilling at the Five-Mile.

near Zeehan) Rep. Seer. Mines Tasm. 1930:20-21.

'* TAYLOR, B.L. & 1952 The Five-Mile Copper-Nickel Deposits

BURGER.D. Unpubl. Rep. Dep. Mines Tasm. pp72 - 97.

TAYLOR.S.& 1992 Oceana Lead-Zinc-Silver deposit. in HUGHES, F.E. (ed).

MATIllSON.l.J. Geology of the mineral depOSits of Australia and Papua New

Guinea. Aust.lnsr. Min. Metall. Monograph 14, pp1253-56.

WILLIAMS. K.L. 1958 Nickel mineralisation in Western Tasmania, in F.L. Stillwell

Anniver:;ary Volume. pp263-302. Aust. Inst. Min. Metail.

MACNAMARA. P.M. 1959.


GOUDIE, M.A. &

HALLOF. P.G.

HACKETT, D.O.N

HORVATH.J.

HORVATH.J.

O'CONNOR. MJ.

KEUNECKE. O.

ROBINSON. R.G.

1970

1968

1957

1958

1953

1959.

B280:17

Repon on the Induced Polarisation and Resistivity survey at

Melba Flats. Tasmania for EZ Co. of Australasia Ltd.

McPhar Geophysics Rpr (Unpubl.) [TCR 70-643]

Interim repon on exploration at Mel ba Flats. Tasmania

Exploration Licence 2162. EZ Co. Report 98.[TCR 68 537]

The results of diamond drilling of the copper-nickel deposits at

North Dundas. near Zeehan Tasmania. Rec. Bureau Miner. Resour.

Geol. Geophys. Aust. 1957/98.

Geophysical investigation (1956-1957) Copper-nickel deposits,

North Dundas field. Tasmania. Rec. Bureau Miner. Resour. Geol.

Geophys. Ausr. 1958/15.

Geophysical investigation of the copper-nickel deposits, North

Dundas Field. near Zeehan. Tasmania. Rec. Bureau Miner. Resour.

Geol. Geophys. Aust. 1953/82.

Diamond drilling - 1980. Lead Blocks-Cuni area. Exploration

Licence 15/76. Dundas. Tasmania. CSR Ltd. [TCR 81-1599]

Recent drilling of the Cuni Deposits. Zeehan

Tech. Rep. Dep. Mines Tasm. 3:11-27.

16

928018

KEYWORDS

Tasmania, Cambrian, illtramafic, Copper, Nickel, PGE, Gold, Geochemical sampling, Petrology,

Airborne Geophysics, Magnetics, TEM

Melba Flats EL 43/92 Gravity Contours· Bouguer Density 2.67gjcc

Melba Flats EL 43/92 Location Plan

Scale

1:10,000

J:I0,ooo

1:10.000

1:10,000

1:10.000

1:10,000

1;100,000

1:10,000

1:100,000

1:250,000

1:100,000

1:50,000

1:25.000

USTOFDPOs

(rock)

(soil)

(petrology)

USTOFPLANS

WCATION

SK55-05

7914

7914-S

3636

17

Airborne Geophysical Survey

Slacked EM 8 Profiles


Preliminary EM Anomalies


Stacked EM 5 Profiles


Slacked EM 1 Profiles


Flight Path Map

Title

Queenstown

Pieman

Zeehan

Dundas

Melba Flats EL 43192 Geology Map

Melba Flats EL 43/92 Regional Geology

Tv 548 Melba Flats

Tv 546 Melba Flats

Tv 550 Melba Flats

Tv 549 Melba Flats

Tv 551 Melba Flats

Tv 631

Tv 675

Tv 680

Tv 628

Plan No.

71516,71540,77352,77354

77353,77355

71541,77351


H28019

Tv 547 Melba Flats Airborne Geophysical Survey

First Vertical Derivative Profiles

1:10,000

Tv 552 Melba Flats Airborne Geophysical Survey

Magnetic Intensity Comours

1:10,000

Tv 674 Melba Flats EL 43/92 Nickel Reward- Vaudeau Grid 1:2,500

•Tv 676 Melba Flats EL 43/92 North Cuni Grid

Tv 677 Melba Flats EL 43192 SoiVRock Chip Sample Location Plan

1:5,000

1:10,000

18

1:5,000

1:5000

1:5000

1:5000

1:5000

1:5000

1:5000

1:5000

1:5000

1:5.000

LIST OF APPENDICES

SUMMARY OF PREVIOUS DRlLLING

QUESTEM AlRBORNE GEOPHYSICAL SURVEY LOGISTICS REPORT &

LOCATIONS OF PRELIMINARY EM ANOMALIES

APPENDIX TIl SOIL SAMPLE LEDGER

APPENDIX IV ROCK CHIP SAMPLE LEDGER & ASSA YS

APPENDIX V PETROLOGY REPORTS

APPENDIX]

APPENDIX II

LIST OF FIGURES

Figure I Nickel Reward-Vaudeau grid - Soil sampling - Pb ppm

Figure 2 Nickel Reward-Vaudeau grid - Soil sampling - Cr ppm

Figure 3 Nickel Reward-Vaudeau grid - Soil sampling - Cu ppm

FIgure 4 Nickel Reward-Vaudeau grid - Soil sampling - Ni ppm

Figure 5 North Cuni grid - Soil sampling - Pb ppm

Figure 6 North Cuni grid - Soil sampling - Cu ppm

Figure 7 North Cuni grid - Soil sampling - Ni ppm

Figure 8 North Cum Gravity profile

Tv 679 Melba Flats EL 43192 Nickel Reward-Vaudeau Grid

Ground Magnetic Contours

Tv 678 Melba Flats EL 43192 Nickel Reward-Vaudeau Grid

Ground Magnetic slacked profiles

IIIIIIIIIIIII

•

rr------------------------------,

eRA EXPLORATION PTY. LIMITED

MELBA FLATS EL 43/92

LOCATION PLAN

64.

17

78

375000IllE

Scale: 1: 100 000

Plan No.: Tv 675Report No.: 19636

37000011I E

Author: T.Arovanis

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Quartzwacke sequence at FarrellRivulet

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5 366

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928031

PTY.

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MELBA FLATS EL 43/92North Cuni Grid

Grid and Rock Sample Location Plan

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Author': T. Arovanis-Orgwn: R• Trovierso..... --."'~

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Dote: " Morch1994

- Report No.:. 19636

Pion No.: Tv 676 '

94-3554

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+-'-'lL._._._

SERPENTINE H'IL~ ~:;;::t~s) • - • - • _ • _(Approx)

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r'- - - -'- -+I~ Pb

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3528475 +

3528474 +

3528473 +

5367000 N+ + + +

3528472 +

3528471+

3528470+ + - 5367000 N

~ SOUTH CUNI (approx)CuNi

5366500 N+ + +~ DUKE OF YORK

Pb (Approx)

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MOSQUITO ~CuNi McKIMMIE ~Pb

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ROCK CHIP AND SOIL SAMPLELOCATION PLAN

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5cm

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CuNIVAUDEAU ~ Old Workings &: Commodity

+ Rock Chip Sample Location

Soli Sample Location

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500 600

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GROUND MAGNETIC STACKED PROFILES

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DRAWN: TA DATf: 25/1/94 PLAN: Tv 678

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Red and white massive quartz bodies.

Austral Creek Siltstone (Siltstone)

Keel Quartzite (Sandstone).

Amber Slate (Siltstone).

Crotty Quartzite (Dominantly sandstone with minor siltstone).

Bell Shale (Siltstone).

Florence Quartzite (Sandstone).

Geological boundary, approximate.

Faulted Boundary, approximate.

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Subophitic textured gabbroic rocks.

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Razorback Conglomerate (Dominantly chert deriver,interbedded conglomerate, pebbly sandstone and sandstone).

Hodge Slate (Interbedded siltstone and mudstone with minor sandstone).

Red Lead Conglomerate (Poorly-sorted, volcaniclastic, polymic conglomerate).

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Success Creek group (Dominantly Siltstone).

Success Creek group (Dominantly Sandstone).

Massive and multiply-intrusive two-pyroxene, granular

Serpentinised peridotite with intrusive gabbro.

Serpentinised. orthopyroxene-rich, peridotite.

Serpentinised, olivine-rich, peridotite.

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Nickel Reward . Vaude-au Pb ppmAll Samples

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928037

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928038


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North Cuni Pb ppm

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APPEND LX I

SUMMARY OF PREVIOUS DRILLING

928044

-- - - - - - - - - - - - - - - - - - - -928045

MET BA FLAT< EI 431°2 - <T1MMARY OF PREYIOTT< DRIL 1l\!C"; ()l\! r" Ni TARr.ET<

HOLE LOCATION BY DA'IE TOTAL INC MAG ORE GABBRO/DYKE COMMENTS REFERENCE

DEPTH ADM OEPllT WIDTII DEPTH WIDT][ N; C" DEPTH WIDTH DEPTH WIDTH

feel m d'g deg feel feel m '" % % feel feet m m

Nol VAUDEAU , L914 , , 50 10 15.2 3.0 , , , , , , BI,lke, 1952

No.2 VAUDEAU ? 1914 ? , 100 I 30.5 0.3 , ., , , " , BI'lke, 1952

No.3 VAUDEAU ? (914 200 61.0 NIL NIL " " " " Blake, J952

No.4 VAUDEAU ? 11.)14 ? ? NIL NIL, " " " Blilke.1951

No.5 VAUDEAU ? 1914 " ? NIL NIL , , , , nlnke, 1952

DHI SOUTI{CUNI TMD 1930 102 31.l NIL :-JIL , " , ., Hl.1kc. 1952

DIU GENETS WINZE TMD 1930 100 30.5 ·45 314 71 3 II. 9 0.9 6.0 2.6 40 32 12.? 9.B Dis:>ClllUMleo Ole not :lSSJy<:d Ilorv;llh. 1957

DIlJ GENETS WINZE TMD 1930 107 32,6 -45 315 '/ , , , 3-6 3.0 56 47 17. I 14.3 In COlllrk1e records. llon'aLh,I')')7

DJ(4 GENETS WINZE TMD 1930 156 47.5 ·45 314 140.5 3.5 41..8 1.1 10.1 5.5 ? ? " ? Dis~minalcd ore nIl! assilyed HMVJlh. 1957

DUS N SOUTH CUNI TMD 1930 149 45.4 -90 N(J, N[L '/ , , , [3urlon. 1970

Dli6 N SOUTHCUNI TMD 1930 144 43.9 -90 WACE " , , , 13mlnn. 1970

DEI? SOUTH CUN[ TMD 1930 156 47.5 NIL NIL, ? , ? 8lake, 1952

DH~ SOUTHCUNI TMD 1930 176 53.6 N[L NIL ? , , , Hlilkc, J952

DH9 GENETS WINZE TMD 1939 346 105.5 -65 349 NIL NIL 195 3 59.4 0.9 Ilor\',llh, 1957

210 31 64.0 H

1)1110 GENETS WINZE TMD 1939 IBO 54,9 ·90 NIL NIL 159 B 48.5 2.4 Horvath,1957

Dill 1 VAUDEAU TMD 193940 ? , TRACE ? , ? '! Blake, 1952

DHI2 MOSQUITO TMD 1939-40 ? ? NTL NIL , ? '! ? Gabbro Blake, [952

DHI3 BLOWFLY TMD 1939-40 '! , ? ? ? ? ? Blake, 1952

DHI4 MOSQUITO TMD 1939-40 " ? NIL NiL ? ? , ? Gabbro l3!<lke, !952

DII15 VAUDEt\U TMD 1939·40 '! , N[L NIL ? ? , , Hlake, [952

01116 BLOWfoLY TMD 1939-40 , , ?, " , , Blake, 1952

01-117 YAUDEAU TMD 1939-40 , ? NIL N[L ? ., ? , Blake, 1952

[MI GENETS WINZE EM 1953 120 36,6 -45 330 70 9 21.3 2,7 172 010 47 .10 14.3 <J,I Cnrl: lo~s in dyke J!olv:llh, ItJ57

EM2 GENETS WINZE EM 1953 12U 36.6 -50 270 66 4 20 I 12 0.50 070 44 37 11.4 II] V~IY poor etlr.:: r<:(~(l\"cry 1IOlvalh, 19)7

79 2 24.1 0,6 1.00 0.70

[\13 GENETS WINZE EM 1953 120 36.6 -45 270 70 15 21.3 4,6 1.48 1.50 57 3J 17.4 9.4 Ilorv:lLh, 1957

EM4 NORTH CUN[ EM 1953 140 42.7 ·45 270 liB 3 36.0 0.9 0.57 0.30 109 14 33.2 4.3 HorvaLh,1957

EM5 NOIlTII CUNI ~M 1953 65 19,B -45 270 NIL N/A NIA :-..rot completed? Robinsoll,I<J51J

M6 GENETS WINZE MSL 1955 L57 47,9 -45 317 123 11 37..') 3.4 0.74 l.L4 115 26 35.1 7.9 Disscrtlinaled ore HOf\."llh. 1957

136 3 415 0.9 9.70 4,30 Massive ore

M7 GENETS WINZE MSL 1956 IB6 56.7 ·90 NIL NTL NIL NIL [-lorvillh,1957

MB GENETS WINZE MSL 1956 118 36.0 ·50 312 80 9 24.4 2.7 TRACE 68 37 20.7 IJ.] Horvath. 1957

89 7 27.1 2.1 0.9210.95

96 4 29.3 1.2 TRACE

M9 GENETS WINZE MSL 1956 285 86.9 -55 319 TRt\CE 259 26 7B,9 7.9 Illl["vJLh, 1957

Mia DEVEREAUX MSL 1956 132 40.2 -50 225 97 I B 29.6 5,5 0.33 0.24 95 27 29.0 8.2 HClrviith. 1957

Mil DEVEREAUX MSL 1956 143 43,6 ·45 256 105 5 32.0 1.5 200 0.33 lOS [2 32.0 37 Mnssivc ore:l( 105-108' I-/llr"VHlh, /957

155.5 20 47.4 6,[ 0.15 0,05 119 24 36.3 7.3 Disscnunu!<:d

Page I

- - - - - - - - - - - - - - - - - - - -MELBA FLATS EL 43/92 -.<;IIMMARY OF PREV/nTl< DR/LUNG ON r" Ni TARr:ET<

HOLE LOCATION BY DATE TOTAL INC MAG ORE GABflRO/DYKE COMMeNTS RFlTREr'-I('E

DEPTII AZIM DEPTII WIDTII DEPTII WIDTH NI Cu DEPTH WIDTH DEPTH WlDTH

feel m dog dog fe~r feel m m % % [eel feel m m

MI2 DEVEREAUX MSL 1956 118 36.0 -45 40 62 12 18.9 3.7 0.29 0.18 61 14 18.6 4.3 Horvath,19.57

74 I 22.6 0.3 2.02 1.15

Ml3 NICKEL REWARD MSL 1956 142 43.3 -45 231 28 26 8.5 7.9 10.00 2.94 II 43 3.4 J3.1 HOI"ilth, 1957

:\1114 NICKEL REWARD MSL 1957 132 40.2 -45 232 NIL NIL NIL NIL ]n[ers,;'cteJ f,m!t zone L-1ol1.'lllh. 1957

MI5 NICKEL REWARD MSL 1957 132 40.2 -45 52 30 4 9.1 1.2 3.61 0.84 30 17 9.1 5.2 Dis$eminaled orc: I~l)l"\'alh. 19q

34 B lOA 2.4 " .67 2.75 Massiye ure

42 5 12.8 1.5 2.13 2.69 DjS!iemlnalCd oro;;:

1'.116 NICKEL REWARD MSL 1957 65 19.8 -55 55 NIL NIL 42 4 12.8 1.2 Ilorv:llh, \957

MJ7 NICKEL REWARD MSL 1957 20 6.1 -45 52 NIL NIL 0 20 0.0 61 Robin<,;on, 1959

MI7 NICKEL REWARD MSL 1957 15 4.6 ·45 52 NIL NIl. 0 15 00 46 Rohinslln.1959

MI7A NICKEL REWARD MSI. 1957 95 29.0 -60 10 NIL NIL 0 95 0.0 29.0 RobitlSlln, 1959

MI8 NICKEL REWARD MSL 1957 87 26.5 -45 10 53 II 16.2 3.4 1.44 1.7 J 53 11 16.2 3.4 Horvath, 1957

MI9 NICKEL REWARD MSL 1957 85 25.9 -M 10 48 10 14.6 3.0 2.25 3.14 45 14 13.7 4.3 Hor\'Cllh, 1957

M20 NICKEL REWARD MSL 1957 105 32.0 ·45 10 , 6 , 1.8 0.49 0.42 0 22 0.0 6.7 Rooinson, J959

M22 NICKEL REWARD MSL 1957 33 101 -45 10 NIL NIL 0 33 0.0 10.1 Rl)\)inson, 1959

MFP109 NORTH CUNI EZ 1965 441 134.4 -65, 210 12 64.0 3;7 0.44 0.44 , ? , ., Bunon, 1970

MFPllO GENETS EZ 1965 259 78.9 ·45 , 70 10 2 L.3 3.0 4.30 2.70 , , ., ., BUllon.1970

MFPIII GENETS EZ 1965 465 141.7 ·45., 100 6 30.5 1.8 0.34 0.64 , , , , D\lJlOn.1970

MFPl12 SOUTlICUNI EZ 1965 , , , , ?., , , , , , , Anon. L969

MFP11] SOUTHCUNI EZ 1965 , ? ? ? ? , '! , ? , ? ., Anon, 1969

MFPI14 NICKEL REWARD EZ 1965-66 ? ? , " ., , ? ? ? ., , , Anon, 1969

MFPI (8 NiCKEL REWARD EZ 1965-66 , , ? , ?, , , , ?

, , Anon, [969

MFP12D NICKEL REWARD EZ 1965-66 , ., ? , , , , , , ? ? , Anon, 1969

MFPJ22 NICKEL REWARD EZ 1965-66 ? ? ? '! ?, , , ? ? , ,

.!\nOIl. J 96~

MFPl26 GENETS EZ 1968 131 39.9 ·40 ? 70 4 2J.3 1.2 0.62 0.88 , , , , Ulinon, ]()70

MFP127 GENETS EZ 1968 400 121.9 -50 ., NIL NIL 256 123 78.0 375 1111rllln. ! 970

MFPI28 GENETS EZ 1968 167 50.9 ·30., 70 11 2L3 3.4 102 0.46 , , , , BWIOIl. 1970

MFP129 GENETS EZ 1968 211 64.3 -60 .) NIL NIL , , , , lJnmin gallbro 13U["lnfl,Il)7()

MfPI30 GENETS EZ 1968 324 98.8 ·48 " NIL Nil. , ., , .) W.;::sh::m g;lbhro Blirlun.Il.)7()

Ml-PJ31 GENETS EZ 1968 289 88.1 -30 '! NIL NIL, ., ., , Wcslcrn gahhro !3l1r!OIl. )970

MFP132 GENUS EZ 1968 228 69.5 ·60, 140 ,3 42.7 4.0 0.41 0.56 '! , ., .,

nI1l1')Il . \')70

MFPI73 GENETS EZ 1973 102 31.1 -45 ? , 9 , 2.7 0.94 0.76 , , , .) Bmllll1. 1971

MFPJ74 GENETS EZ 1973 /35 41.1 -45 ., NIL NIL ? .) ., , (}nmm gabbro 1311rlOI', J973

MFPI75 GENETS EZ 1973 147 44.8 -70 ., NIL NIL , " , , Unmin gabbro IlUT1lln. 1973

MrPI76 GENETS EZ /973 /85 56.4 45 ? NIL NIL ., ? , .) Unmin g:lbbro l1uT1on, 1973

MFPI77 GENETS EZ 1973 250 76.2 ·45 , NIL NIL, , , ? Unmin gabbro lJurton.1973

TMD

TOTAL

- Tasmanian Mines Department

8165 2489

EM - Engle Metals MSL - Montana Sjlver Lead

Page 2

EZ - Eleelrolytie Zinc

- - - - - - - - - - - - - - - - - - - -MELBA FLATS EL 43/92 - SUMMARY OF PREVIOUS DRILLING ON TARGETS OTHER THAN CUNI

928047

HOLE LOCATiON E N DY DATE DEPTH DIP AZIM AZ1M Pb Zo Cu Ni Ag Sn COMMENTS I~ b~FERC!\CE

MAO AMO

m dcg deg % % % % ppm ppm

M23 SERPENTINE HILL UC ? ? MSL 1957 51.8 -45 262 0.16 B~lwcen Nickel Reward HorvaLh,1957

170 & Murchison II..... )'.

MFP106 DUKE OF YORK , , EZ 1965? , , " , ? , , , , " Goudie, lI)70

MFPto8 DUKEOFYORK , , EZ 1965? , , , , ? ? " , ? ? GOlldie. 1970

Ll LEAD DLOCKS '! , EZ ? , -90 - , , ? " ? , Ellis. 1987

L2 LEAD BLOCKS , ? EZ , , -90 - , , , ? " ? EHis. (9g7

L3 LEAD BLOCKS , , EZ ? ? -90 , , , , , ,~JJis, [987

L4 LEAD DLOCKS ? , EZ ? ? -90 , ? , , , , Ellis. 1987

L5 LEAD BLOCKS ? , EZ , " -90 , ? , , ? , Ulis, 1<)87

L6 LEAD DLOCKS ? ? EZ ? , -90 , , ? , , " Ellis, 1987

L7 LEAD BLOCKS ? , EZ , " -90 , ? ? , , ? Ellis, 1987

L8 LEAD DLOCKS ? ? EZ , ? -90 " , , , , ? ElIil>,1987

[,9 LEAD BLOCKS , ? EZ ? ? -90 ? , ? , , ? Ellis. 1987

COl LEAD BLOCKS 367380 5367480 CSR 1981 356,6 -45 277 288 1.35 24.7 0,15 71 565 Inlen;e-clcd dokrile Macnamara, 1981

CG2 LEAD BLOCKS CSR 1981 440.0 -46.5 290 301 4.76 5.40 0.05 129 115 Mflcn::ulIara, [98 [

cm SOUTH NEVADA 365156 5365200 CSR 331.0 -50 195 206 On mag nnomal)' ElJis.l986

CG4 W OF BLOWFLY 364925 5366550 CSR 226.0 -50 79 90 On mag anomaly Ellis.19B6

COS W OF NORTll CUNI 3657'75 5367730 CSt{ 256.0 -50 235 246 On mag anomaly Ellis, 1986

CG6 DUNDAS ROAD 365775 5367730 CSR 256.0 -50 235 246 On mug anomaJy Ellis. 1986

CD7 PINE PLANTATION 365775 5367730 CS~ 256.0 -50 235 2'6 On mag anomaly Ellis, 1986

SHI SERPENTINE lULL UC 367149 53667BO TMD 671.5 -90 0 Brown. 1091

5H2 SE~PENTINEHILL UC 367850 5366199 TMD 150.0 -90 0 Drown, 1991

SIl3 SERPENTINE IIiLL UC 367914 5367011 TMD 140.0 ,90 0 Dro\vn, 1991

SII4 SERPENTINE IIILL UC 368298 5367516 TMD 101.5 -60 170 13rown. 1(1)1

SUS SERPENTINE 1lI1.L UC 36B289 5367464 TMD 10 1.5 -60 270 l3rowll, J(1)1

SH6 S.EHPENTINE HILL UC 36&2Bl 5367416 TMD 101.5 -60 270 1110wl1.11)91

MSL

EZ

TMD

- Montana Silver Lead

- Electrolytic Zinc

- Tasmanian Mines Department

Page 3

IIIIIIIIIII-•IIIII-

•

928048

APPENDIX II

QUESTEM AIRBORNE GEOPHYSICAL SURVEY LOGISTICS REPORT

&

LOCATIONS OF PRELIMINARY EM ANOMALIES

IF YOU EXPERIENCe ANY DIFFICULTY IN THe RECEIPT OF THIS TRANSMISSION~I ~A~~ TELE~HCN" US ON .810 12217gg.

Following are the results of the PLATE modelling. We had trouble modelling the result offlying along a line offset from the centre of the body so have made some inferences byusing models of various d"!'th. ufburial (with the aircraft flying straight over the top) tosimulate moving the aircraft away to the side.

Transmission of: 3 pages Including this one.

From: Andrew DUNCAN, World Geoscience Corporation Ltd.•

17 Emerald Tee., West Perth, Western Australia, Australia 6005

However, the model that I have used is perhaps not truly representative of your situation.For example, if you had a target with less conductance or more conductance you wouldnot get quite as large a response. The modelled conductance of80 S gives approximatelythe peak response you can expect for this size of body· any more conductive and youbecome subject to the inductive limit.

928049

Fax: (+619) 481 0709

Date: 18 Feb 1993

Fax: (03) 484137&

If the aircraft was flying a line which crossed the along-strike extension of the body at adistance of some 100 metres from the centre of the body then this would be approximatelyequivalent to flying straillht.ovcr the top of the body being buried at a distance ofapproximately 40 metres. The model responds above the background noise level on thisearly channel for the 40 metre depth, so I would say that you would be able to see thisparticular target on a line which was 100 metres offset.

A 50 metre x 50 metre vertical body of conductance 80 S was modelled. The profilesdisplayed are for our earliest channel· we call it channel 0 - its centre is some 190 Ilsecs intime after the transmitter pulse is switched off. The profiles plotted are as a function ofdistance perpendicular to strike of the body. The aircraft is flying in the direction ofinc:reasing distance on the plot. The target sits at position =0 metres as indicated by thedotted line.

Theo.

Attention: Thea Aravanis

Company: eRA

Phone: (+819) 322 1799

Subject: Airborne EM Tasmania

ME88AGElINSTRUCTIONS TO ADDRESSEE:



928050In summary, the signals generated by the target are not huge (because of the target's size)and to detect these targets on two or more lines you may need quite tight line spacing. Iwill call you in a short while and suggest that we fly a grid at 100 metres and then re-flyinteresting bilS of the survey in the opposite direction or at an offset of approximately 50metres to give some control on the interpretation.

Best regards,

Andrew Duncan

IF YOU EXPERIENCE ANY DIFFICULTY IN THE RECEIPT OF THIS TRANSMISSIONPLEASE TELEPHONE US ON +619 3221799.

n28051

Plate Modelling, Questem 75 Hz SystemChannel 0 (190 usee) profiles

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eRA EXPLORAnON

MELBA FLATS, TASMANIA

QUESTEM AIRBORNE GEOPHYSICAL SURVEY

LOGISTICS REPORT

JOB #1335

Data acquired and processed by

WORLD GEOSCIENCE CORPORATION LIMITED65 Brockway Rd,

Floreat, 6014

TELEPHONE: (619) 383-7833FACSIMILE: (619) 383-7166

928052


CRA EXPLORATION

MELBA FLATS, QUEENSTOWN, TASMANIA

LOGISTICS REPORT

CONTENTS

1. LOGISTICS 1

1.1 Operating Base 1

1.2 Flight Summary 1

1.3 Aircraft Details 1

1.4 Field Crew 1

2. SURVEY DETAILS 1

2.1 Line Details 1

2.2 Navigation 1

2.3 Flight Path Recovery 1

2.4 Altimeters 1

2.5 Aircraft Magnetometer 2

2.6 Questem Airborne Time Domain EM System 2

2.7 Acquisition System 3

2.8 Magnetic Base Station 4

3 . CALIBRATIONS 5

3.1 Magnetics 5

3.2 Electromagnetics 5

4. PROCESSING 5

4. 1 Infield Verification 5

4.2 Magnetic Data Processing 5

4.3 Electromagnetic Data Processing 5

4.4 Processed Data 6

APPENDIX

Details of flight lines - location and numbering

928053

i) Sperry AA-l00 Radar Altimeter, 0-610 metre range.

ii) Aerodata Barometric using a SemSym LX 1603 sensor - operating range 0-30 psi.

2.3 FLIGlITPATHRECOVERY

Flight path recovery was confirmed on-site using Aerodata post flight processing

software.

2.2 NAVIGATION

Navigation was by Ashtech GPS satellite positioning. An Ashtech receiver collected base

station information for post flight differential corrections.

WORLD GEOSCIENCE CORPORATION

Page J928054

Approx. Line Spacing

100m

100m

070"

160"

180"

Pilot I Crew Leader

Geophysicist

Operator I Technician

Britten Norman Trislander

VH-NKW

10120 - 10460

20010 - 20200

17010

2.4 ALTIMETERS

1.1 OPERATING BASE

The operating base was from the Launceston airstrip, Tasmania

1.3 AIRCRAFf DETAll..S

Survey Aircraft

Registration

1.4 FIELD CREW

Mike Nelson

Euan Clarke

Darryl Curley

1.2 FLIGlIT SUMMARY

Flying for Job 1335 was carried out between 4th and 11th April, 1993.

2. SURVEY DETAILS

2.1 LINEDETAll..S

A full list of lines flown is included in the Appendix.

Line Numbers Orientation

1. LOGISTICS

eRA Exploration, Melba Flats QUESTEM surveyLogistics ReportI

IIIIIIIIIIIIIIIIIII

QUESTEM is an airborne electromagnetic mapping system designed and operated by

World Geoscience Corporation. Half-sine waveforms of electric current with alternating

polarity are pulsed through the transmitter loop slung around the aircraft. The

electromagnetic field generated by the loop penetrates the ground below the aircraft

(Figure 1) and induces secondary, decaying currents from any conductive material.

These are sensed by a receiver towed behind the aircraft. The secondary current

amplitude and decay rate depends on the three dimensional distribution of the electrical

conductivity in the ground.

2.6 OUESTEM AIRBORNE TIME DOMAIN EM SYSTEM

WORLD GEOSCIENCE CORPORAnON

928055Page 2

Half-sine wave pulse

2.0 msec

4.67 msec

60m

130m

200A

6

223,000 ATm2

128

52.08 microsec

Horizontal coil in towed bird

200msec

4

13m

75 Hz

64

Scintrex V20 I split beam cesium vapour

0.01 nT

17,000 - 95,000 nT

Nose Stinger

0.5 second

26m

Frequency of transmitter operation

Channels recorded

Transmitter waveform

Transmitter on-time

Transmitter off-time

Bird height

Flying height

Peak transmitter loop current

Transmitter loop turns

Transmitter loop moment

Number of digital samples per waveform

Sample size

Sensor

EM reading duration

EM readings per second

Sample separation along line

2,5 AIRCRAFf MAGNETOMETER

Type

Resolution

Operating range

Mounting

Sampling rate

Sample separation along line

eRA Explorarion, Melba Flats QUESTEM surveyLogistics ReoortI

IIIIIIIIIIIIIIIIIII


QUESTEM SYSTEMGEOMETRY

75m

1RECEIVER t

45m

I p Primary current in transmitter loop

Is Secondary current in the ground

The airborne data acquisition system used was the Picodas PDAS 1000 system and Aerodata

navigation software.

Window Start (usecs) End (Ilsecs)

1 272 428

2 376 533

3 481 637

4 585 741

5 689 949

6 897 1,157

7 1,105 1,366

8 1,314 1,678

9 1,522 1,887

10 1,730 2,199

11 2,043 2,512

12 2,460 3,032

13 2,980 3,553

14 3,501 4,074

15 3,918 4,491


eRA Exploration, Melba Flats QUESTEM surveyLogistics RePQrt

EM windows specified by client

2.7 ACOUISmON SYSTEM

2.7.1 Digital Recording

Line Number

Flight

Year

Date

Time

Barometric Pressure

Radar Altimeter

Raw Magnetic Intensity

Navigation String (latitude, longitude, quality, age etc.)

ACTime

+ 64 Channel EM Data


928057Pagd



eRA Exploration, Melba Flats QUESTEM mrveyLogistics Report

2.7.2 RMS Graphic Recorder

Channel 0 EM IChannel I EM2Channel 2 EM3Channel 3 EM4Channel 4 EM5Channel 5 EM6Channel 6 EM7Channel 7 EM8Channel 8 EM9Channel 9 EMIOChannel 10 EMilChannel 11 EM 12Channel 12 EM13Channel 13 EM14Channel 14 EM15Channel 15 Radar AltimeterChannel 16 Spherics monitorChannel 17 Power line monitorChannel 18 Raw magChannel 19 latitudeChannel 20 longitudeChannel 21 Barometric altimeter

2.8 MAGNETIC BASE STATION

Type

Resolution .

Sampling Rate

Location

Recorder

FS 10000 ppmFS l0000ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS 10000 ppmFS l000ftFS 1000 ppmFS 1000 ppmFS 100 nTFS 0.010 degFS 0.010 degFS 1000 ft

Geometries G-856AX

0.1 nT

10 seconds

Launceston airstrip

Internal

928058Page 4


3.2 ELECTROMAGNETICS

3.1.1 Noise Envelope

The noise envelope matched or bettered the required specification of ± 0.2 nT.

3.2.1 Reference File

The primary waveform is measured at great height prior to the flight. This is

used in converting the data to ppm.

2R059

4.3 ELECTROMAGNETIC DATA PROCESSING

The airborne electromagnetic data was corrected for transmitter drift. Algorithms were

also applied to the data to compensate for varying bird-plane geometry. No contour plots

were generated as the area is considered to be generally resistive. Early channel data (-2,

-1 & 0) were acquired and is supplied to CRA as digital data. However as there were

problems in compensating these channels due to difficult flying conditions, these

channels were not transferred over to the final multiplots. The time constant included on

the line profiles was calculated from channels 1 to 15 over a time of 4.05 milliseconds.

4.2 MAGNETIC DATA PROCESSING

The airborne magnetic data was corrected for diurnal adjustments. The IGRF (1990

epoch extrapolated to 1992) was then removed at calculated intervals along each flight

line. The data was also corrected for system parallax and heading differences. The data

was then gridded at a cell size of 30 metres using selected lines.

3.2.2 Drift Correction

A zero file is recorded at great height prior to the flight, and a drift is collected at

the end of the flight to enable a correction for transmitter drift due to warming.

3. 1.2 Heading Error

Heading checks were performed by flying over a prominent non-magnetic

feature, in a magnetically flat area at survey height. An offset was calculated

from the average magnetic values in each direction and adjusted.

3.1 MAGNETICS

4. PROCESSING

4.1 lNFlELD VERIFICATION

Magnetic and electromagnetic data quality was checked daily using a Sun SparcStation

and aircraft analogs. Flight path was also checked against survey specifications. Data

processing was taken to [mal stage before leaving the base of operations.

eRA Exploration, Melba Flats QUESTEM surveyLogistics Report

3 . CALIBRATIONS



These initial computer generated picks were then manually assessed and extensively

edited using WGC in-house software. As the aUlopick routine does not allow for

flying height variations, correlation between altitude variations and EM response

were noted and the anomalies disregarded if not considered due to a genuine

bedrock or surficial response.

4.4.3 Final map products

Flight path plot of the differentially correct position - I:25,000 and I: 10,000 scale

Stacked profiles of Total Magnetic Field - I: 10,000 scale

Stacked proftles of 1st Vertical Derivative - 1:10,000 scale

Stacked proftles of three selected QUESTEM channels - I: 10,000 scale

Preliminary computer generated EM anomaly pick - 1: 10,000 scale

4.4.4 Computer Generated EM Anomaly Pick

Automatic anomaly picking is determined on a line by line basis. The process is

essentially that of locating EM anomaly peak positions and outputting them in a

listing after rejection criterion have been applied. The autopick routine looked for

anomalies of interest between channels I to 12 with a minimum response amplitude

of 50 ppm.

928060PaRe 6

4.4.1 Data Tapes

The located data tapes contain all of the raw and reduced geophysical data including

positional, diurnal and IGRF data, in an ASCII fonnat supplied at 6,250 bpi on 9

track tape.

4.4.2 Multi-plots

Line proftles for each flight line at 1:25,000 scale include:

15 channels of electromagnetic data

Total magnetic field

Calculated magnetic vertical derivative

Altimeter proftle

50 Hz monitor profile

Time constant trace

AMG co-ordinates are given in the title block and along the top of the profile. For

the E-W lines, northing of the line start and finish are in the title block and relative

easting provided along the line. For the N-S lines these are easting and northing

respectively.

4.4 PROCESSED DATA

eRA Exploration, Melba Flats QUESTEM surveyLogistics ReportI

IIIIIIIIIIIIIIIIII

•

* Lines scrubbed and reflown - data should not be included in final grids. Datafrom these lines is supplied to client. for use in detailed EM analysis.


APPENDIX

FULL LIST OF LINES FLOWN

328061APPENDIX

070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'070'180'

LINE DIRECITON

101201013010140101501016010170101801019010200102101022010230102401025010260102701028010290103001031010320103301034010350103601037010380103901040010410

* 1042010421

* 1043010431

* 10440* 10441

10442* 10450

104511046017010

LINE NUMBER

eRA Exploration. Melba Flats QUESTEM surveyLo~if[ics ReportI

IIIIIIIIIIIIIIIIIII



eRA Exploration, Melba Flats QUESTEM surveyLogistics Reoort

LINE NUMBER

2001020020200302004020050200602007020080200902010020110201202013020140201502016020170201802019020200

LINE DIRECfrON

160'160'160'160'160'160'160'160'160'160'160'160'160'160'160'160'160'160'160'160'

928062APPENDIX

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APPENDIX ill

SOIL SAMPLE LEDGER AND ASSAYS

928069

- - - - - - - - - - - - - - - - - - - -MELBA FLATS EL 43192 - SOIL DATA BASE 928070

SAMJlNO. D1'O EAST NORTII PROSPECT DEI'll] 1I0RIZ SAMI'I.F. COLOlI~ LlTIIOLOG YfI'EXTURE COMMENTS susc. Ag Co C, Cn Fe NI Ph Zn

m n'1'E .'l 10_5 oS! pplll ppm ppm pplll % ppm ppm ppm

3911707 77353 366480 5366J50 VAUDEAU 0.7 C R YV Cry with Ssh rock fragments Mjn.::s ])":pt grnv sin. on road 50 -I 42 1113 266 10.90 154 23 122

3911708 77353 366440 5366150 VAUD~AU 1.5 C R Pll Ccy with Ssh N",.'(( 10 3528459-61 (ROCK) 16 ·1 4 68 76 12.40 100 59 51

3911709 77353 366385 5366100 VAUDEAU 0.1 C R GY Ccy willl sjl;sifl"::U Ssh & ooze EIW COSI':::ln full of WDler 350 ·L 50 229 1737 10.90 792 29 175

3911710 77353 366500 5366310 VAUDEAU 0.4 C R V V Ssh wiLh Ccy from CSR 6400E 6250N 24 ·1 30 417 50 7.07 104 6 126

3911711 77353 366450 5366300 VAUDEAU 0.4 OIC R YO Ccy wilh Ssli 0011 hill 20 -I -3 156 64 9.36 72 130 90

3911712 77353 366275 5367315 NORTII CUNI 1.1 e R LaVa Ccy with Y Ssh From CSR 6200E 7300N 19 -I 19 120 37 7.L8 74 3 84

J9J17J3 77353 366270 5367505 NORTIlCUNI 0.4 B RlT 0 GrillYCcy Star pickett S 1899 13 -I -3 153 10 6.70 9 50 24

3911714 77353 366345 5367610 NORTHCUNI 0.4 e R V Ssh fragments 20 m E of NOl1h Cuni shflfl 20 -I 13 334 69 4.1& 82 835 223

3911715 77353 366345 5367687 NORTHCUNI 0.5 e It 0 Cey WiUl mmor Ssh 01:· Mines D~[ll gmvily s.1n. 13 -I ·3 286 133 15.10 94 34 66

3911716 77353 366329 5367698 NORTH CUNI 0.4 e R U Ccy Wilh minor 5sh 20W 20 -I 3 314 123 17.60 83 9 142

39J l717 77.U3 366312 5367709 NOBTJI eUNI Os C R DO Ccy with Ssh & minor VII ClIZ 40W 19 -I -3 165 251 16.10 227 26 76

3911711:l 7735] 366290 5367711 NORTI [Cl)NI 0.8 C " U Ccy wilh COlll11l0n Ssh 60W 20 -I 5 181 423 18.70 300 46 55

3911719 77353 366269 5367709 NORTIl CUN! 0.8 C R J)P[] Ccy wilh eOllllllon Ssh 80W 15 ·1 7 150 139 13.00 113 1338 85

3911720 77353 366247 5367712 NORTIl eUNI 0.9 C R MLV Ccy with minor S"h IDOW 26 ·1 38 769 352 12.10 964 102 95

39J 1721 77353 366229 5367707 NORTH CUNI 0.7 O/C R MGV Ccy with minor Sed? RF 120W 12 ~I 6 116 51 3.32 44 87 87

3911722 77353 366219 5367688 NOBTH eUNI 0.7 e R MLV Ccy with \I~ry lI1inor ~dmF L40W 16 -I 25 139 21 6.02 139 41 407

3911723 77353 366198 5367680 NORTH eUNI 0.7 C It DI'H Ccy with common $sh 160W 16 ·1 19 102 25 9.31 57 14 115

391 L724 77353 366180 5367677 NOIrnl eUNI 0.4 C R GLY Cry with Ssh 1SOW 20 ·1 31 371 53 10.50 144 43 II

3911725 77353 366383 5367675 NOBTll eUNI 0.4 e " B Ccy willl COlll1l10n Ssh 40£ 18 -I -3 128 190 13.10 39 69 74

3911726 77353 366403 5367671 NORTH eUNI 0.7 UIC B 0 Cey wilh \lcry minor Ssh 60£ 12 -I ·3 129 42 6.77 .4 23 23

3911727 77353 366424 5367673 NORTII CUNI 0.6 e R LVG Cey Wilh minnt Ssh 8UE 20 -I 13 99 22 11.00 58 69 110

39 L17'28 77353 366444 5367673 NORTII CUNI 0.6 Die R 0 GLilllyCcy 100E II -I ·3 66 15 3.92 23 14 25

3911729 77353 366463 5367671 NOHTII CUNI O. e R LVG Cey with Ininor RF 120E 20 -I 6 199 12 4.30 25 12 47

3911730 77353 366483 5367670 NORTH eUNI 0.2 Die R LGD Ccy Wilh COllllllon RF 140E· Very lhin soil developed 15 -I • 117 20 2.82 29 2. 43

3911742 77353 366503 5367671 NORTll CUNI 0.3 DIC R r Ssh 160E - Hil bcurock 15 -I 13 167 15 5.83 50 II 7C

3911743 77353 366523 5367671 NORTH eUNI 0.6 OIC R P Ccy 180E - Over Ssh? 19 -I 17 160 17 909 61 9 86

391J744 77353 366543 5367670 NORTH eUNI 0.' BIC R MPO Cey 200E- HMd 16 ·1 14 82 8 6.25 55 I' 82

39LI745 77353 366563 5367671 NORTJI eUNI 0.8 C R LV Ccy wilh LV S~h 220E 25 -I II III 30 9.5L 76 23 8(

3912901 77355 366100 5365950 VAUDEAU 2.0 C' R? 0 Fri::llJle Ccy 10 -I 30 264 104 13.10 116 8 m3912902 77355 366125 5365950 VAUDEAU 1.3 Ole? It? 0 Fri,IDlc Cey Msi rock frngmenLs 290 -I 13 308 96 16.00 63 ·3 95

3911903 77355 366150 5365950 VAUDEAU 1.5 C R rOG Gritty Cey On track 10 ·1 -3 117 9~ 7.34 22 31 2

3912904 77355 366175 5365950 VAUDEAU 1.1 e R 0 Grill)! friable Cey Msl rock fragmenls 20 -I II 193 169 20.40 78 4 75

3912905 77355 366200 5365950 VAUDEAU 1.5 U R D Silly Tmck.:lt 190E 20 -I 12 284 81 16.20 74 4 93

3912906 77355 366125 5365950 VAUDEAU 0.7 D R 0 Sandy/silly 90 -I 13 223 77 12.20 61 -3 94

3912907 77355 366250 5365950 V/\UDEI\U 0.8 ole R'! OR Sanoy/silly Aflel' sulphides? 20 -I 16 235 41 17.00 1J4 22 116

3912908 77355 366260 5365950 VAUDEAU 1.0 e R 1'0 Grilly friabk Ccy 30 -I IJ 2725 364 J5.40 155 5 89

3912909 77355 366270 5365950 VAUDEAU 1.0 e R PO Grilly [riilbl,;: Ccy 10 -I 23 613 123 15.10 173 16 99

3912910 77355 366280 5365950 VAUDEAU 1.0 C R POVO Grilly frinblc Ccy Rock fragments 20 ·1 46 848 110 11.10 519 II 13

391291 J 77355 366290 5365950 VAUDEAU 1.0 C R rovo GrilLy friable Ccy Rock fragments 10 -L 6 10. 42 7.75 58 15 8

3912912 77355 366300 5365950 VAUDEt\lJ 0.8 C? R? PVG Grilly friable Cey Green Msl rock fragments. 10 -I 55 153 12 2.61 40 13 .(

3912913 77355 366310 5365950 VALJDEAU 0.7 C? R? pva GrilLy friable Ccy Green Msl rock fragJnenls. 10 -I ·3 152 2' 1.17 27 31 18

3912914 77355 366320 5365950 YAUDEAU 0.8 C? R? PVG Gritty friable Ccy Green Msl rock flagmenls. 0 ·1 -3 92 20 1.26 25 10 22

3912915 77355 366330 5365950 VAUDEAU 0.8 C? R? PVG Gritty friable Ccy Gre;:n Msi rock fragments. 10 -I 8 137 60 3.58 81 22 79

3912916 77355 366340 5365950 YAUDEAU 0.7 e R PYG Gritty friable Cey From swamp. V rock fragments 10 ·1 10 147 70 7.17 67 29 77

3912917 77355 366350 5365950 VAUDEAU 1.2 e R PO Cey Prilllory Msl foliation noted 0 -I -3 41 10 0.94 16 77 2(

3912918 77355 366360 5365950 VAUDEAU 1.1 0 R MUlO Gritty frillhle Cey 10 -I 7 105 58 9.61 44 199 66

- - - - - - - - - - - - - - - - - - _.-MELBA FLATS EL 43/92 - SOIL DATA BASE

SAMPNO. 01'0 EAST NOllTII PHOSPECT DErTIl JIORIZ SAl\lI'LE COLOUR L1TIIOLOGYfrEXTURE COMMENTS susc. Ag Co Cr Cn Fe NI I'h Z"m n"PI1 ]I 10-5 51 ppm I "pm ppm : 'Opm % ppm ; ppm ; ppm

3912919 77355 366370 5365950 VAUDEAU LI B 1< MLBO Grilly friabk: Ccy 220 -I 9 158 41 12.20 51 21 77

3912920 77355 366380 5365950 VAUDEAU 0.5 OIC R 0 Ccy Wilh homfds. Sw RF On outcrop. 3D -I 19 112 19 10.40 57 5 95

39J292J 77355 366390 5365950 VAUDEAU J.] 0 R? MNO Griny Ccy 10 3 -3 57 61 6.78 4 76 21

3911922 77355 366400 5365950 VAUDEAU 0.8 NO T N Gravely ~nt Swampy broad gully 10 ·1 4 222 23 6.20 70 42 89

3912923 77355 366430 5365950 VAUDEAU 0.3 OIC R n Ccy with Sw rock. fragments Tr<lck al 425£. 10 -I 5 192 174 2.75 45 61 76

3912924 77355 366450 5366150 VAUDEAU OA C R I' Ccy wilh Ssh fragllll:nlS 10 -I 13 143 120 11.80 70 19 88

39J2925 77355 366430 5366150 VAUDEAU OA Hie 11 0 Ccy wiLh rock frag,I1l~llls 70 -1 12 360 250 13.00 201 28 III

3912926 77355 366420 5366150 VAUDEAU 1.5 0 clay I'V Ccy 3D -I 26 141 161 10.00 139 7 13(

3912927 77355 366410 53661 SO VAUDEAU 0.8 OIC R PV Grlny Ccy Green Ssh fragmems 20 -I 48 228 155 8.29 169 16 18(

3912928 77355 366400 5366150 VALJDEAU 2.0 U Clay rv Ccy Very soft al EOn 10 -1 22 105 63 439 199 4 12

39J2929 77355 366390 5366J 50 VAUDEAU 1.3 B?C R I'V Ccy with S:-h fragm,,:nLs 20 -1 12 200 86 9.82 98 9 77

3912930 77155 366380 5366150 VAUDEAU 1.3 UiC R OV Gr;lly Cc'l Green Ssh RF 3D -I 13 242 106 11.80 152 20 10'

3912931 77355 366370 5366150 VAUDCAU 0.9 C R I'V Rf' with minor 0:.'1 1 m west of old trench 3D -I 15 133 76 6.36 63 -3 8\

3912932 77355 366360 5366150 VAUDEAU 0.7 C' R 0 Griuy Ccy wjlh unidellliflcd RP Ck at 365E 10 -I -3 84 86 7.55 19 10 411

3912933 77355 366350 5366150 VAUDEAU 1.0 C R 0 GriUy Ccy wi1h Ssh frag 10 -I 4 108 56 7.61 57 34 39/3912934 77355 366340 5366150 VAUDEAU 0.7 OIC R 0 GlittyCcy 20 -I 5 204 71 14.90 46 -3 69

3912935 77355 366330 5366150 VAUDEAU OA C? R 0 Grilly Ccy Next 101gb noat & Sss outcrop 130 ·1 17 325 43 10.00 132 -3 66_

3912936 77355 366320 5366150 VAUDEAU OA C R VB Ccy wilh shak rock [Ingments Top of hill 20 -I 14 152 22 9.53 44 -3 6,

3912937 77355 366310 5366150 VAUDEAU 0.3 OIC R U Ccy. Poor C horizon developed 50 ·1 4 115 12 6.49 16 4 3'

3912938 77355 366300 5366150 VAUDEAU 0.2 NC R n Ccy with Ssh rock fragments Trnck at 6298E 130 I 6 124 23 7.41 15 10 41

3912939 77355 366290 5366150 VAUDEAU 0.6 C R PO Ccy with 5sh rock fragmenls 40 -I 4 136 35 8.84 16 4 38

3912940 77355 366280 5366150 VAUDEAU 0.9 C R VU Ccy w;Lh Ssh ruck fragments Creek al6275E 20 -I 6 149 27 4.80 30 7 48

391294) 77355 366270 5366150 VAUDEAU 1.2 Die RlT LO Ccy with gnlvd and green Ssh Gravels may be assoc. with ck 20 ·1 10 420 24 2.45 40 22 7'

3912942 77355 366260 5366150 VAUDEAU 0.3 0 T Oil Ccy with gravels l3If1ck Ssh and qlz fHlgments 60 ·1 16 224 63 9.74 48 11 9[,

3912943 77355 366250 5366150 VAUDEAU 0.9 WC R OV Grilly s:lIldy Ccy 20 ·1 20 694 58 8.54 104 12 11013912944 77355 366450 5365950 VAUOEAU 0.7 C R 0 Ccy 20 ·1 18 210 23 5.16 79 26 16~~

3912945 77355 366475 5365950 VAUDEAU 0.- C R LOO G Ssh fri:tble Waler atEOH 10 -1 4 118 14 Ll2 II 54 3,

3912946 77355 366500 5365950 VAUDEAU 2.0 0 0 Ccy 20 -I 16 241 71 13.60 77 29 10·~

3912947 77355 366525 5365950 VAUDEAU 1.9 U 0 Ccy OnHill 10 -I 8 249 111 8.00 109 16 57

3912948 77355 366550 5365950 VAUDEAU 1.0 B 0 Ccy Very hard 1.0 l~nU"ate. On hill. 10 ·1 5 298 124 16.90 65 21 7'

39J2949 77355 366575 5365950 VAUDEAU 1.1 0 0 Ccy Very hard 10 l~ntr<lle. On hill. 10 -I 3 232 86 14.30 81 23 9,

3912950 77355 366600 5365950 VAUDEAU 0.6 0 LB Coy Very hard 10 pcnlrnte. 20 -I 10 196 46 6.66 80 114 5'

3912951 77355 366625 5365950 VAUDEAU 1.0 U' PO Coy Very hard 10 penlrnt~. 10 -I -3 151 66 9.54 23 ]] 2'

3912952 77355 366650 5365950 VAUDEAU 0.9 U R? MOW Very hard LO pentr:lk 10 -I ·3 141 64 1200 21 18 38

3912953 77355 366675 5365950 VAUDEAll 0.8 BIC R 00 Sbs Ccy Graphitic 10 ·1 -3 60 28 1.11 9 22 I"i

3912954 77355 366700 5365950 VAUDEAU 1.5 C MOW Ccy VelY hard 10 pentrate. 10 -I 4 385 123 15.50 54 8 20'

3912955 77355 366725 5365950 VAUDEAU 0.9 Die R? MKO Ccy with rock fragl1l<:n1s Very hard 10 pentrale. 20 -I -3 225 82 13.50 30 7 4f

3912956 77355 366750 5365950 VAUDEAU 1.5 0 OK Ccy 10 -1 ·3 400 119 7.07 80 20 21

3912957 77355 366775 5365950 VAUDEAU 1.2 Ole? R' La Ccy Rock [rogments? 20 -I 15 168 40 7.33 88 55 16'

3912958 77355 366800 5365950 VAUDEAU 1.8 UIC PV GriLLy Ccy Waler 011.5 III 20 ·1 14 164 57 5.14 130 42 9·,

3912959 77355 366225 5366150 VAUDEAU 1.0 C R? OV Griuy Cc'l with rock frugmcllIs Ssh 5ss and qtz rock frogmanls 20 -1 19 1127 64 6.63 109 20 13C

3912960 77355 366200 5366150 VAUDEAU 0.8 C RfT OV Gritty Ccy with Sbs & V $ss 20 -1 27 620 53 4.39 116 12 15~

3912961 77355 366175 5366150 VAUDEAU 1.1 C Rrr V Ccy & Cg with V Sss & Sbs 70 -1 41 487 67 4.51 127 9 211

3912962 77355 366150 5366150 VAUDEAU 0.8 OIC R V Ccy wj!h V Sss fragmnnts 60 -1 14 864 44 624 60 14 9<

3912963 77355 366125 :5366150 VAUDEAU 0.8 C RlT VO Ccy with rock [rngments Qlz wj!h V 5ss 20 -1 15 475 64 9.64 81 28 10]

3912964 77355 366100 5366150 VAUDEAU 0.6 0 R LOV Gil1y Ccy Creek cross at 536095E 20 -1 17 746 68 9.70 91 22 101

- - - - - - - - - - - - - - - - - - - -MELBA FLATS EL 43/92 - SOlL DATA BASE

SAMrNO. Dro EAST NORTH I'ROSl'ECT [)(~I~11I 1I0lUl SAMI'LE COI.OUIt L1TIIOLOG YfI'EX"fURE COMMENTS susc. Ag Co Cr Cu Fe NI rb Zn

'" TYI'E ~ IO-~ 51 lopm ppm I npm ppm % ppm ppm ppm

3912965 77355 366475 5366150 VAUDEAU 0.8 U R PU Ccy 10 -I 14 252 81 6.89 75 22 9'3912966 77355 366500 5366150 VAUD[AU 1.0 0 R OV 10 -I 8 147 30 3_80 63 22 62

3912967 77355 366525 5366150 VAUDEAU 0.4 IJ R OV Cry & Sss hrlgmems Crc:ck a16515E 30 -I 9 583 38 7_90 53 9 68

3912968 77355 366550 5366150 VAUDEAU 0.9 C R GV Ccy & rock fraglll..:nls Q1Z, green and black Ssh 20 -I 15 633 39 3.08 77 24 115

3912969 77355 366575 5366[50 Vt\UDEAU 0.8 OIC R GV Ccy & fock frngJlk'lllS 5 -I 5 896 28 2.66 24 112 85

3912970 17355 366600 5366150 VAUDEAU 0_6 IJIC R V Ccy & mek [mgm~nli Green Sss 10 -I 13 748 27 2.80 35 265 II

3912971 77355 366625 5366150 VAUDEAU 0.3 0 RJT G Cry & rock frugmcnts Qll.&Jg,b 10 -I 4 614 25 1.41 13 32 59

3912972 77355 366650 5366150 VAUDEAU 0_5 l1IC RJT V Ccy & rock fragments Qzt & black Ssh 20 -1 25 249 41 6.40 72 39 207

3912973 77355 366675 5366150 VAUDEAU 0_6 WC T' OV Ccy& rock fn.lgnlcnlS 10 -1 13 197 28 5.49 42 44 126

3912974 77355 366700 5366150 VAUDEAU 0.7 UIC R V Ccy& ql:l 10 -I 6 164 19 2_74 38 74 81

391.2975 77355 366725 5366150 VAUDCAU 0.7 0 I( VY Cc.y & Sw 10 -I 4 198 20 1.88 38 291 97

3912976 77355 366750 5366150 VAUDEAU 0.3 II T Ccy& 'lIZ 3 -I -3 278 37 0.86 ,. 176 3

3912977 77355 366775 5366150 VAUD12AU OA 0 R N Sbs 2 -I 7 185 48 3.05 22 436 7,

39J297& 77355 366800 5366150 VAUDEAU 2.1 0 R 0 frihk Ccy 3 -I -3 266 77 239 8l 99 30i•3912979 77355 366150 5367700 NOla" CUNI 0.4 U/C I{.IT 0 Ccy & Qlz. P Ssh & 19b'! 20 -f 3 190 15 3.77 11 48 6213912980 77355 36617 5 5367700 NORTIl CUNI 2.1 0 R 0 Ccy On slight hill 10 -I II 501 147 8.l9 162 152 198!

3912981 77355 366200 5367700 NORTJI CliNI 0.7 0 R II Ccy 10 -1 10 217 24 8.30 40 13 9-

3912982 77355 366225 5367700 NORTH CUN! 0.9 U R? VPIJ Ccy w'llh Q1Z & 5ss [{F 10 -1 17 150 41 410 62 37 15

3912983 77355 366250 5367700 NORTH CUNI 0.9 II I( (lO Ccy 20 -1 31 225 65 B.55 157 92 236

3911984 77355 366275 5367700 NORTH CliNI 0.9 lJ R 0 Ccy 5 -I -3 193 116 5.24 25 917 43

3912985 77355 366300 5367700 NORTH CUNI OA U/C R VO Ccy & ISb? lOck fragm<,:nts 40 -I 3 308 382 9AO 8B 40 90

3912986 77355 366310 5367700 NORTH CliNI 0.3 0 K! 0 Ccy & 'IlL fri.lgl11~tl\s 833 -I 6 322 364 14.20 267 36 6-

3912987 77355 366320 5367700 NORTH CUNI I.l II R 0 Ccy lO -I 3 160 128 10.10 71 23 8<

3912988 77355 366330 5367700 NOR"f" CUN! 0.7 n R 0 Coy Nearroi.ltl 10 -I -3 260 83 12.30 79 12 12'

3912989 77355 366340 5367700 NORT" CUNI 1.0 II R DP Ccy&PMsl 20 -I -3 250 95 19.60 5S 22 23'

3912990 77355 366350 5367700 NORTIl CUNI IA O/C R 0 Ccy 10 -I 3 175 liD 16.00 52 63 150

3912991 77355 366360 5367700 NORT" CUNI 08 II R 0 Ccy 10 -1 3 293 78 LO.50 80 47 6-

3912992 77355 366370 5367700 NORTH CUNI 2_1 D R OV Ccy 10 -I 26 269 144 9.39 204 20 17

3912993 77355 366380 5367700 NORTH CUNI 1.3 0 R OV Coy NIA -1 -3 102 28 2.56 31 26 3,

3912994 77355 366390 5367700 NORTII CUNI 1.4 O/C R OV Ccy & V Sss fragm<,:nts N/A -I -3 79 13 1.87 16 70 2'

39J2995 77355 366400 5367700 NOlrlTICUNI 0.7 II R 0 Ccy N/A -I 3 105 13 3.47 13 25 25

3912996 77355 366410 5367700 NORTIl CUNI 0_3 OIC R V Ccy & V Sss N/A -. -3 144 8 1.46 7 16 18

3912997 77355 366420 5367700 NORTIl CUNI 0.6 OIC R V O.:y & V 5ss N/A 2 -3 91 12 0.85 9 25 20

3912998 77355 366430 5367700 NORTH CUNJ OA C R V V Ssh Fresh wdrock N/A -1 16 118 63 8.54 53 7 II

3912999 77355 366440 5367700 NOR"f" CUNI 0.7 C R V V Sss D<:,drock? N1A -I 10 158 32 3.63 33 48 66

3913000 77355 366450 5367700 NOR"l"" CUNI 0.3 U/C R 0 Ccy& V Sss N/A -1 10 183 17 4.80 34 9 72

928073

A a~O ... Mottled

" F'\l~pl" V G~"n

e ""'" X ?Inl{

a e=q. - Sluey YlIllo ..... 5 SlIv",r

>-s H.... m.atirll a. Golrn.t

'" Magn"'lIle X, Kyanile

J. J .ar"$itt 70 TQurmalln.

"" Maroq.ll"oi!t'$a mins

F!! FIII"l"1J'i!crtousM '"II O~ in r~.ae:

,'I 91llC'J;.

a Grtyc: a~ .... l'I

W Whit.

c::x.CUR COOE5

Cf CI ... y=:, E,idoc,c.: C~rO<ln.a(.\I

!d SiCl.rir.

MINEAAUSATlONlACt';::AAnON. FEAit!l=\ES

"" GOi&-!l.4l"1ClUS u. Vl!lin 5ulMJdl' AI Alterl!ldun Veined 0. Ois.s4m sulah 51 SUlci/ledDi QisseminoJ,t.d ,. FraClurlt suioh

3. a.al'l(l&Q 'Ulan

Gcct.o:::i;C).L FEA.1UMES

"" 8eOOed " F"rzelund '" PorOtlyrl:ie.., 6"",,< I. Inlltraltdd.d $0 s.:I'I115101l1te, Breccialed Ll":'l L.;.minal.d "" Sl'w.at1ldF1 Fissile (sLaley) ... MassiY • uu VU9''''

17f2/9J

INs W ....l/'ler.d31 614!l:leneo

L-. L .....c.I'I«I

Oc Unknown

ce:y Cr.;.y

Et Tulr unl:ill

Efl ..,I,ie lurf

S~c M~jlc rutl

\u Utc~al'l'l.alic

lu'S. Sdrgilnlrnilll

Go G.aioi!n ... '1 ?),ril. N1 M sulotlJdes

'" Sonalerillill '" Pyrrnotic.C; C:"lilICQ<;Iyrira Su Un.o:nown 3.tflpfl

M"nq Mi9m,zeill SECO'lDAAY M1NE.FW.JS.\TlCN

C. L....d s.candan",. e. Coo9",r 5.0:. N1 Nt $olICOnd.l.nllS

.lM.'o:. S:.:.arn Z. Zire '-" Unanium •

,I,LT!ER,ATiONJOlAG.'1CSilC ""'1NE.::w...S

S..... W:;.;!u O(J..~HCSTJC' ""Ih'ERAl.o.:oYSaq Aqglam.r... te/f\"lizlill

C Sur"llci;ll

a C1h.~

Omy MyloniteCtlr 8 r.cci;lOf F'lIult go".l9_

QU;I.!ernary '"' PlHmian , Prot.(ozo,,:

Tertiary e Carocnll.rClu5 A Arenallan

5 Silurian

Cl'1llCOICIiClUC a O....ani.an'riOl.ssic a Or~o ... ;ci:;,n

Juras.$ie E C;llTlorian

o.q V"in quotrt%

o.-c V"in QMonal.

Or.!; V,in lul9nic:1.

\

FlEtO 10

Fi.ld 11!l1TlT lor rt:o::lt type

Bra.a ;rl::zupinqs ;,rill:-

5 S_c:limllnlary Intrusi....

" MIIQrncrpnic: - E.nn.rsi"'ll

SEllMerTA.'i'r"

""" COI\qlomer.ll1 51. LimeSfO.,e

Su Sands[clCle $0' Chert

5si Slltl.IOn8 511 61FS.h Sl1aJe... 31al;;;'J:,. si'l.ale 5 •• ar.c:c:i.

MEiAJ.OAPl-i1C

....1 5101.111 '"" Ou.. rniu

""" ?1'1",'ite M-n Mara••

""' SCl'IlSt ... Am~l1jbolillll...,. Gn,ohitic: scnisf .= Calcsillcue

>.<;n Gnflis.:> '" Horn/.I!>

INTrluS..vE !GNEOUS

" Felsic unaitl. 1 ; (nurrmed undiH.

II, F.lsic pOl'lJnyry Ii';! lnuumed PQrcn1>, AOlitll 1m Modic '-lnci!'/,I.' Gr;anilll '<0 OollHiht

~gd Gt:I.nodiorite [go G,u)bro

EXl'N....5N'E :G'lEOJ:S

Ort Flhyol1C. ..... Al'la4,sitl=x Oao::;(_ '" 3as:;lll

Sl.lRFIClAL\CO....ER) MA"T'Ei=lw....

c,. Allu...;um Cit L.uariCeC=. Callu... iul'l'l e<o PI,soHt ...

Co .".., e.t Iran.lOnee,. al.o:ac:'It SQul C,i;i SUeur.C, Gra... lIl C.:L C;llcr.l.

KeJ

oT

,:;ocx- eCQ.... .31 Ollt ol,JolI:sn"Q .:;eoiaqu:.3.1 1":""3.0

F::J( lLmill ClIISlg".l.uon I,,\SII:.

S.UAllTH

"'iCCX'CHJP .J,}oIO OAllllNG COOESII

•I,IIII!.J:..>~i

I:I

.'-IiI '-....

I:I.I~

IIII

I A Division or Inchcape Testing Services (AuSlrali<l) Pry. Ltd.

ACN 004 591 664

ANALYTICAL OATA928074

AUTHORISEDOFFICER _

..... _r...... '

Results In ppm unless otherwl::;,e specIfiedT = element present: but concenuabon too law 10 measureX = element concentration is below detection limit- .:::: elemenl not determined

~SAMPLE PREFIX REPORT No. REPORT DATE CLIENT ORDER No. PAGE

1104165.60.08960 14/01/93 171516 I 1 OF 1

USE SAMPLE Cr- Cr- Cu 'Cu Fe Ni NiNo. No.

1 3308004 - 1.00 4 - 4.57 660 -

2 3308005 1350 - 5 - 5.85 1650 -

t: 3308006 1050 - 5 - 5.36 1550 -

3308007 855 - 2 - 6.67 730 -

1-5 3308008 500 - 3 - 4.98 1100 -

6 3308009 1450 - 9 - 5.39 - 2.06

[7_ 3308010 185 - 825 - 1.81 - 26.60I

I: 3308011 680 - 6 - 3.42 2000 - 13308012 445 - 7 - 12.21 1200 -

I

J10 3308013 1650 - 2 - 18.34 1850 -

I11 3308014 1250 - 2 - 10.56 7800 - I

(12 3308015 1700 - 2 I - 3.52 7350 - IIj

t ::3308016 1600 - 4 - 3.05 7100 -3308017 675 - 120 - 7.35 - 3.35

I

r 5 3308018 745 - 67 - 6.24 - 2.55i

. ,16 3308019 325 - 3350 - 11.20 4950 -

(1' 3308020 265 - 4550 - 9.76 2900 -, .

18 3308021 155 - - 3.04 2.83 - 8.94

It 19

l2021

:[ 22

'" 23DETECTION 7 0.01 2 0.01 0.01 3 0.01

II 24 UNITS ppm I. ppm I. I. ppm I.

II 25 METHOD GA140 GA104 GA140 GA104 GA140 GA140 GA104

II>

IA Oi...ision of Inchcape Testing Servi<:es {Ausrralial PlY Ltd

A.C.N. 004 591 664

ANALYTICAL OATA928075

AUTHORISEDOFFICER ~

p .T = element present; but concentrabon too low to measureX -= element concentration is below detection limit- -= element not determined

t SAMPLE PREFIX REPORT No. REPORT DATE CLIENT ORDER No. PAGE

1104165.60.08960 14/01193 17 1516 I 1 OF 2

USE SAMPLE Ag Ag Cu Cu Fe Mn M,:;,1E Pb Pb*No. No.

1 3308022 , <1 - 120 - 49.13 - 5.61 12 -

12 3308023 <1 - 8 - 52.23 - 4.08 <3 -

l: 3308024 15 - 29 - 1.23 105 - 6600 -

3308025 - 197 900 - 0.99 480 - - 1. 76

~:3308026 - 75 290 - 0.39 205 - - 3.40

3308027 10 - 36 - 0.99 130 - 4400 O. 52~

[7- 3308028 - 124 385 - 0.06 79 - - 2.28

f: 3308029 4 - 6 - 23.43 8400 - - 1.97,

3308030 1 - 7 I - 1.60 790 - - 1.23

1-'0 3308031 <1 - 16 - 1.83 375 - 2550 0.28

I I11 3308032 6 - 20 - 1. 57 56 - - 5.80

(12 3308033 <1 - 6 - 0.61 300 - 1200 -

13 I ,

114iIi

r5i

i,,

16

[1\!

18

t 19

ro21

IL 22

It ::DETECTION 1 10 2 0.01 0.01 3 0.01 3 0.01

UNITS ppm ppm ppm 'l. 'l. ppm 'l. ppm 'l.

I~ 25METHOD GA140 GA104 GA140 GA104 GA140 GA140 GA104 GA140 GA104

-Results in p m unless othef"lNise specified

I~]

I A Division at Inchcape Testing Ser.;ices (AUStralia) Ply. LtdA..C.N 004591 664

ANALYTICAL DATA928076

AUTHORISEDOFFICER _

Results In ppm unless otherwise specifiedT = element present: but concentration too low to measureX .:: element concemrauon IS below detection limIt- =element nat determined

t SAMPLE PREFIX REPORT No. REPOATDATE CUENT ORDER No. PAGE

1104165,60.08960 14/01/93 171516 I 2 OF 2 II

ITUBE SAMPLE Zn -i Zn As AsNo. No.

1 3308022 95 - - 200

r 2 3308023 30 - - 200 ,,,

3 3308024 - 2.16 - 750 !

t,,

4 3308025 - 57.00 - 200i

I 5 3308026 23.30 3750 i- - ,!

!6 3308027 - 1.08 - 200 i

1[7_ ,3308028 - 28.70 11 -

It6 3308029 - 18.75 2 -I9 3308030 - 6.12 32 -

IJ 10 3308031 - 1.06 7 -11 3308032 - 5.10 21 -

III

12 3308033 1050 - 3 -

It13

14

I! 15

16

I ,..

I18

19

I 20

21

I 22

I23 DETECTION 2 0.01 1 100

24 UNITS ppm % ppm ppm

I 25 METHOD GA140 GA104 GAl14 GA140

II

A Division Qllncl1cape Testing Services (AUStralia) Ply Ltd.ACN 004 5,91664

ANALYTICAL DATA

928077

I

SAMPLE PREFIX- REPORT No REPORT DATE CLIENT ORDER No. PAGE

[10410,5.60.093 4 7 08/1)4; 731'15 "'0 I 1 OF I

l~E SAMPLE Cu Cu Pb Pb Zn Zr, Ag Ag NiNo.

l~3308092 4 - <3 - 49

I- <1 - 1996

3308093 3 - <3 - 54 - <1 - ::2'18

l3 3308094 '0 - <3 - :'.9I

- <1 - 190(:k

3308095 -, (3 - -,~ ( .'~O264 J - ~c: -

.. " --5 3308096 2 - <3 - 36 - <1 - 2221

l:3308097 4 - -, - 38 - <l - 2891~

3308098 '2 - <3 -) 38 - <1 - 2397

'f8 3308099 ~ - <3 - '+0 I- <l - 2806k

3308100 3 <3 01 5 <l • 22399 - - - -

flO 3313768 .4 - <3 - 47 - <l - 1851

,, 3313769 '" - . 3 C'I .46 .. - <1 - .. 771;>

1,2 ,I3313770 ~- 77 - 77 I 1 - 11'1J' - -

I I

l'3 3313771 2G .- 9 - 7-:, - "' - .lei'"

14 3313772 133 - 5 - 88 - <l - 30

l'5 .3313773 126 - 4 - 56 - <1 - 53

16 3313774 29 - 51 - 119 - <1 - 100

1)7 3313786 2 - 16 - 198 - <1 - 1083

" <1'8 3313787 ,~ - 13 - 117 - <:1 - 2368 !,k

19 3313788 <2 - 23 - ::29 I - <1 - 4703I

[20 3313789 J 2 - 12 - 219 - <1 - 2279,

.

21 3313790 2 - 5 - 229 - <1 - 1937 !.. .. I

f 22

C H-I3313791

"'i_If'16 - 445 - <1 - 379

'-,. ~ .. /I ,~ I (

( ), -- ,-

" , I ",

J2333137-9:2' ( !~ <2 G I 3 - 509 - -:1 - 2540

,.. ~ ::.c. \ ..

I.-I '''''., ,

3081 I24 3313793 2 - 11 _. 151 - <1 -

I,

[25 3313794 2 - 3 - 191 - <1 -j p24 !

Results in ppm unless otherwise specified 7/1T =element present: but concen/ration loa low 10 measureX =element conee"lradon is below deleclion limit AUTHORISED- =element not delermined OFFICER

/fTU/

:_-., ...

IA Division of lnchcape Testing Services (Australia) Pry. Lid.

A.C.N. 004 591664


....... ,

IISAMPLE PREFIX REPORT No. REPORT DATE CLIENT ORDER No. PAGE

110A165.S0.C9347 C8/04/93171540 I 2 OF 7

'E SAMPLE Cu Cu Pb Pb Zn Zn Ag Ag NiNo.

3313795 2 6 139 <11 - - - - 1140

[12 3313796 8 - 12 - 196 - <1 - 1801

l: 3313797 ~ - 17 - 345 - <1 - 120:;-L

3313798 2 - 18 - 232 - <1 - 981

15 3313799 2 - 10 - 194 - <1 - 1808

3313800 2 <3 1566 - - - <1 - 1461

7 3528456 - 1. 66 39 - 92 - 8 - --

~8 3528457 1911 - 34 - 182 -- 1 - 1159

19 3528458 1264 - 30 - 160 - 1 - 1654

J10 3528459 20103 - (3 - 119 - (l - 377

3528460 3176 - 10 132 - 1 - 440111 ••. ,>II -::;; , ,

112 3528461 - 7.21 298 - 1178 - 9 - -I

l:: 352846~ lE85 - 25 - 160 - 1 -- 1162 I

3528463 2589 - - 4.14 - 17.50 - 221 1403 II

115 3S28464 126 -- - 0.20 - 2.19 13 - 22 !I

3528465 52 - 1.5(j - 0.75 33 - ,~ I16 - ,-,

i,,

7 3526466 40 - 82 - 275 - .• - 78 I,

, ,I.-18 3528467 6 - 22 - 119 -- (1 - 247,

19 3528468 3 -- 21 - 215 -- (1 - -I

1-20 3528469 6 - 66 - 233 -- <l - - i

i

3528470 48 -- <3 -- 79 - <1 - 271 ,

21 :

(22 3528471 27 - 18 - 86 -- <l - 69 ii

23 3528472 12 !..;.: ! 19 - 85 -- <1 - 1000

124--

.

3528473 C,6 - 5 -- 69 - <1 - 231

IJ 253526474 8 - <::::; - 37 - <1 ;J: //53

•

Results in ppm unless othelW1se specified

~/IIT := element present; but concentration too low 10 measureX := elemenl c:oncenlralion is below delection limit AUTHORISED- := element nol determined OFFICER

• -f/(I(U/II

r..I

A Dhlision of Inchcape TeSling Services (Australia) Ply. Lid.A.eN 004 591 664


tSAMPLE PREFIX REPORT No REPORT DATE CLIENT ORDER No. PAGE

[10416:',. SC ..)QC:47 1~la/ 'J4/ 7:'. I,' ~4') I 3 OF 7f ........ ' •

lTUBE SAMPLE CU Cu Pte Pb Zn Zn .Ac1 Ag NiNo. No.

1 3528475 3 - 4 - 64 - <l - 772

I( 2 3528476 13 - <3 - 68 - <1 - 1362

3 3528477 5 <3 7~ <1-

- .-~~ - - 230

It,

4 3528478 <2 - <3 - 80 - <1 - 1706i

IJ 5 3528479 <2 11 - 114 <l 3115i

- - -i

6 -r ~i

3528480 ~ - ~ - 186 - <1 - 1487!

h7 3528481 2 - 7 - 216 - <l - 1504

8 3'528482 8 - 2799 - 656 - <1 - 1086

I 9 I'·

I 10

11 I I -I, ."1 '.'

"

I 12 i

13 I1 14

,I 15

16

Ih}.~

18

I 19

I 20

21

I 22

23 DETECTION 2 0.01 -r 0.01 2 0.01 1 10 3"

I 24 UNITS ppm I. ppm I. ppm I. ppm ppm ppm

I 25 METHCD GA140 GA104 GA140 GA104 GA140 GA104 GA140 GA104 ,G7:1°Results in ppm unless olherw;se specified

AUTHORISED-OT = element present: but concentration too low to measureX .: elemenl concentration is belOw detection limit- '" element not detennined OFFICER

Il"~

I• •

A Division ollnchcape Testing Services (Australia) Ply LtdACN. 004 591 664


tSAMPLE PREFIX REPORT No REPORT DATE CLIENT ORDER No PAGE

I104l65.~O.09347 08/04/ 9 3 1 715 '+0 I '! OF 7 !

!

rUBE SAMPLE Ni Co Cr C,- Cr Cr V S S(R)No. No.

1 3308092 - 83 749 - - - 10 - -

[2 3308093 - 90 624 - - - 10 - -

3 330809" - 83 520 - - - 9 - - I

t,

4 3308095 - 84 531 - I - - 8 - - :

J 5 3308096 - 91 517 - - - " - - Ii

6 3308097 - 100 ~35 - - - 11 - - iI

~7I

3308098 - 117 785 - - - 11 - -

~8 3308099 - 127 947 - - - 12 - -

t 9 3308100 - 11 .'058 - - - 8 - -

ro 3313768 - 80 587 - - - <5 - --3313769 - 58 , 1112 - .- - 25 - -11 , .

--0

., ,

Il 12 3313770 - 28 260 I .. -I

- 41 - -I

13 3313771 - 29 98 - - - 103 - -

If 14 3313772 - 34 20 - - - 290 - -

Il15 3313773 - 31 47 - - - 156 - -

16 3313774 - 33 226 - - - 152 - -

Ih 7 3313786 - 88 326 - - - 10 - -

18 3313787 - 50 560 - - - 9 - -

I. 19 3313788 - 176 505 - - - 10 - -

I~20 3313789 - 111 993 - - - 5 - -

21 3313790 - 96 395 - - - 13 - -

I 22 3313791 - 93 - - 9852 - 74 - -

23 3313792 - 99 - - - 1.27 c;,- - -

I-~

24 3313793 - 61 795 - - - 5 - -

I 25 3313794 - 82 500 - - - 7 - 1/11-dResutts in ppm unless otherwise specified /111//T == elemenl present; but concentration 100 low 10 measureX = element concentration is below deleclion limit AUTHORISED- = elemenl not determined OFFICER,

•

I '"'- " . A DLviSI(l1l 01 lnchcapa Testing Sef'llices (Australia) Pt'(. ltdA.C,N. 004 591 664

ANALYTICAL DATA

928081

II SAMPLE PREFIX REPORT No REPORT DATE CLIENT ORDER No. PAGE

1104165.,~0.09347 08/04/0)3 17154Cl I 5 OF 7

~ESAMPLE Ni Co Cr Cr Cr Cr \1 5 S(R)No,

33137951 - 57 583 - - - <5 - -

rJ2 3313796 - 91 855 - - - <5 - -

.: 3313797 - 87 9°-; - -I - 18 - -

3313798 -; '" 916 -I - - 31 -. -

J53313799 - 78 446 - -

I- 7 - -

6 3313800 - 90 592 - - - 16 - -

]7 3528456 2.26 680 220 -I -\

- 207 3.900 -

i: 3528457 - 37 95 - - I - 155 - -I

3528458 - 461

447 - - I - 377 - -

110 3'528459 .- ::·8 341 I - - - 268 - -

3528460~ "'7 ..... c: I

I 281,11 - 140 -. - - - -• -'...J ~j .. ',\

12 3528461 3.58 12~O le'" - -T - 8'" - 31.4.. Ii,3 3528462 - 72 .. - -I - i - 189 - -1. .... ....;>

14 3528463 ,. 941

119 - -I

- 50 - -

15 3528464 - 14 .,.- - ,- - 15 - -~ .

16 3528"65 - 4 10 - - I - <5 - -

7 3528466 - I 27 139 - - I - 212 - -

18 3528467 - 18 690 - -I

- <5 - -

19 3528468 1.26 60 749 - - - 6 0.020 -

120 3528469 0.6" 110 530 - - - 6 0.025 -

3528470 - 27 1764 - - - 13 - -21

(22 3528471 - 21 305 - - - 71 - -

123 3528472 - 78 1471 - - I - 40 - -

24 3528473 - 27 274 - - - 43 -/

1-25 3528474 - 12 84 - - I - 31 (j //-/.Results in ppm unless otl'lerwise specified /IJJT -= element present but concentration tao low \0 mea5IJre

AUTHORISEDX = elemenl concentration is below detection limit- '" element not determined OFFICERI

I··'

I0_ .• A Division o11nchcape Testing Servic~s (Australia) Ply. Ud,

A,eN. OQ4 591 664

ANALYTICAL DATA

928082

ISAMPLE PREFIX REPORT No REPORT DATE CLIENT ORDER No PAGE

j 1('41~~ 6(' n9~47 G8/()4/~= 1-1'~ 0 , I 6 7--- - '-' ..... _. - ~ .' -; ..... (. OFi

lTUBE SAMPLE Nl Co Cr C,- C,- Cr V 5 S(R) INo. No.

1 3528475 - 69 886 - - - 2.r.l - - !

l ,

2 3528476 - 87 1497 - - - 24 - - I

II ,

t3 3528477 .- 31 q43 - - - 10 - -

4 3528·a. 79 - 89 2':119 I - - - 21 - -

J5 3~J28479 - 119 968 - -I - 11 - -

6 3528480 63 650 6- - - - - -

~7,

3528481 - 64 573 - - - 6 - -

.J8 352:3482 - 39 -, -, _. - - 7 - -, L ,

It 9 I

II 10

11) , . - "II 12 I I

,13

II 14I

I15

16

ItJ7 I18

I 19

I 20

21

I 22

23 DETECTION 0.01 "T -, 0.01 5 0.01 ':' (l.Or):; 0.1~

,

I 24 UNITS '1. % I. ppm ..1/ppm ppm ppm '"

"I 25 METHOD GA104 GA140 GA140 GA104 GX401 GX404 GA140 OM613 Ir-fP

Results in ppm unless otherwise specified -;;pT = elemenl present; but concentration too low !o measureX == element concenlralion is below detection limit AUTHORISED- = element nol determined OFFICER•'.

. /

-- . "" A Division of Inchcape Tesfing Services (Australia) Pry. ltd.A.C.N. 004 591 664

928083ANALYTICAL DATA

t--------'S"-A::.:M"-p.::LE=-:..:pRc:E::oF::.:IX'------~--rI1-.•).-4-1-6-0Rc:.E::o6P-=O("-)R"-T."-()N_"-°9-.~_.. -4-7-----,-::.:R=EP"O::R.c:T.c:D:::.A:::.T::.E--,--C::L::'E::.N:.:T-::O::.R::D:::E:.:R-::N:::O_---r-__-'.:PA~G"'E'______

_ 1 ~ 08/04/93 171540 I 7 OF 7

1280.0 1260.0 1180.0 1310.0 618.00 ~17.00

492.00 473.00 218.CO b27.00 493.00 63.00 ,

Pt Pt(R)

<0.50<0.50

1. 21

Au AulR)

3.15

<1.00

SAMPLENo.

3528461

3528469

3528456

3528468

lUBENo.

•11ro

14

f 13

23

I 22

I 24

I 25

1

DETECTION 1.00 1.00 0.50

UNIT5 ppb ppb ppb

METHOD G5333 G5333 G5333

Results in ppm unless otherwise specifiedT = element Dresenl: bUI concentration 100 low \0 measureX =element concenlration is below detection limit- =element not delennined

0.50

ppb

G5333

0.50

ppb

55333

0.50

ppb

GS333

J -I

/11//AUTHORISED~

OFFICER _~~~----_

·1 ."'-~ .' • -.if

AU~ IHALIANLABORATORYSERVICES P/LA.CN. 009 936 029

928084h:":_ _.:..~::..~ ~\ :.~, J.n....,.:,~~

, ~~ , ~

IBrhibane HlII8d OffIce and laboratoryJ'2 Siland SueeT. StaHoro, O. 4053

ANALYTICAL REPORTpo. 60:0: 66. Everton Park. O. 4053Telephone: (Or) 352 5577facSImile: (07) 352 5109

PAGE 01 3I ClIENT.cRA EXPLORATION PTY LTDADDRESSP 0 BOX 8093 LABORATDRyBEND I GO

NORTHLAND CENTRE BATCH NUMBERBE 1382-0I VIC 3072No. 01 SAMPLES28

CONTACTAOMIN OFFICER DATE RECEIVE02 3 / 11/93

DINO:77352

DATE COMPLETE022/ 12/93

SAMPLE TYPEROCK CHIP PROJECT No:Cu I Pb Zn j I Ag . .-/FeIELEMENT! / I .-/ j

I SAMPLE NUMBER UNIT ' ppm

ippm ppm ppm Y.

IMETHOD I IC586 I C586 IC586 IC586 IC586I A , X )( x A

I3184279 168 137 143 2 8.303184280 4630 521 168 4 9.303184281 94 13 85 2 8.153184282 189 t 6 140 2 7.30

I 3184283 1240 6 83 2 7.693184284 1.12Y. 34 318 5 13.873184285 1320 2760 18.20Y. 48 12.49

I 3184286 27.80Y. 135 3620 59 18.433184287 26.50% 11 2 446 59 18.993184288 4240 108 147 2 12.92

I3184289 427 33 1 1 9 1 17.543184290 3640 38 122 2 15. 183184291 23.00% 89 255 5 20.083184292 521 1 9 197 1 , 1 . 1 7

I 3184293 216 1 0 105 1 1 t .293184294 176 25 144 1 10.783184295 3290 22.70% 12.80% 780 1 .87

I3184296 2.51% 8.42% 6 . 15Y. 790 4.863184297 21.80Y. 1 .93Y. t .64Y. 1360 18.753184298 9800 567 495 1 9 9.92

I3184299 5090 141 181 8 1 1 .743184300 1150 148 122 3 8.473911701 2.44% 2.65% 3.89% 530 4.013911702 2.65% 498 356 1 0 20.44

I 3911703 756 98 147 4 12. 1 43911704 3770 53 146 4 11 .263911705 9.60% 98 214 25 38.76

I 3911706 31.30% 397 576 74 27.37

All pages of this reporthave been checked andapproved for release .

ItIONlIMIT: i 5 I 5 5 0.0 t

I IMMENTS: CU values )1.00% reassayed by Method Al 01 .

I Pb values )1.00Y. reassayed by Method Al 01.Zn values )1.00Y. reassayed by Met hod Al 01 .Ag values )25ppm reassayed by Method Al 01 .

~..... 7991~ Fa>c. (077) 799729................,...: jOm 87 ~1S5 Fa...: (017181 42'20,....-...,~~Fb:I063J6J1189

..;:Wl46 1:J90 Fa.>!: (054\46 1389

I :'.!

ANALYTICAL REPORT

1 .30

0.220.170.40O. 12

0.080.38

0.28

2.15

Auppm

PM217)'

·3of

I

I;><1

2

0.270.32

0.581 .820.480.22

6.13

0.25

0.46

Pdppm

PM217

"'-'tL!:.',';.,=- ~~'i1~~ ~"::.,i;~~

CLo _ • _ ~._

Brisbane Head Ottlce Oind Laboratory32 Shand SUeel, SlatlorO. Q 4053P.O. 8011. 66. Everlon ParI<.. a, 4053TelepMne: W71352 5577FacSimIle: (071 352 5 r09

PAGE

I,Ai

PROJECT No:

LABORATORyBEND I GOBATCH NUMBERBE 1382- 0

0.220.30

0.34

0.33

0.510.950.39O. 14

3.06

Ptppm

PM217

No. 01 SAMPLES28DATE RECEIVED23/1 1/93

DATE COMPLETED22/1 2/93

928085

II

AI

812410

108171

1 1709680

17642008330

534229409

90802001 00136

13902. 19:<:561052105170

27491802.90r.

52148302720

512

Nippm

IC586

CHIP

13841 92960

2061 1

459712

372031

136051263741

40873

1 15139

1'J183737

30124

160034

Coppm /

IC586

AUSTRALIANLABORATORYSERVICES P/LA.CN. 009 936 029

SAMPLE TYPE.R 0 CK

3072

I·ELEMENT I

UNIT .i METHOD II

I

3184279318428031842813184282318428331842843184285318428631842873184288318428931842903184291318429231842933184294318429531842963184297318429831842993184300391170139117023911703391170439117053911706

II CLiENTCRA EXPLORATION PTY LTD

ADDRESS? 0 BOX 8093NORTHLAND CENTREI VIC

CONTACTADHIN OFFICER

I SAMPLE NUMBER

IIIIIIIII

l1NO:77352

.ITlON LIMIT: 5 5 O. 01 0.01 o. 01

,MMENTS:

IPertl'll.a~

~. (091249 2988 fQ.ll: (091249 2942Kalgoor;_ ~bomofy

Pr-one: (()90121 1457 F;v;: (090121 6aJA.J~ SiKi~ L.atIoNlory~: 1059152 6020 F"~ (089)52 6028MI .... LlOOl'lROI'YPhone. (Om 49 5&45 Fu: (am ~ 55A6

~- .. , . ..... -

ANALYTICAL REPORT

3072

3ot3

,"'.•":._.").r-~ •..•

8rieoane Head Office and laboratory32 Snand Slreel, Stattord. Q 4053P,O Bo.1 65. Evt"l1on Par":. Q. 4053releonOnl,1: {07l 352 5577Facs,mlle: (07) 352 5109

PAGE

PROJECT No'


No. of SAMPLEsZ8DATE RECEIVED23/ 11/93

DATE COMPLETEoZ2/ 12/93

928086

LTD

AUSTRALIANLABORATORYSERVICES P/LA.C.N. 009 936 029

SAMPLE TYPEROCK CH I PINO:77352

AII CliENTCRA EXPLORATION PTY

ADDRESS? 0 BOX 8093NORTHLAND CENTREVIC

I CONTACTADMIN OFFICER

1.22

0.170.42

I SAMPLE NUMBER

IIIIIIIIIITION LIMIT:

II ELEMENTi Au PM217 I. UNIT I ppm! METHOD I CHECKS IIX.

3184279 II

318428031842813184282318428331842843184285318428631842873184288318428931842903184291318429231842933184294318429531842963184297318429831842993184300391170139117023911703391170439117053911706

O. 01

JMMENTS'

I~ .......-.

17} 79 915.5 Fa.: (Om 79 9129T~ l.IDOtatOr;'

"'oil: (om 87 4\5.5 Fill!: \077l87 42'20_lo_t:". 11!l3 1122 Fax: (06J1 53 1189-0 LAtIOl'WIOl'y

146 1390 Fa.. (05-4146 t,J89

Pel1l\ L..aborUorv~; t09124~ 2988 Fu: (091249~K.II19oorl" u.boldMyPtn-.e.' (090121 1457 Fa.o:: (090121 6253Allot Son~ LaboRtor1Ptlooe: (089152 6020 Fu: (089) S2 6028Mt Iu UOonrtofyf>nonlI: (om 49 55A5 Fax: t0771 413 5546

......"." . -:/:- .',. - .-' .

ANALYTICAL REPORT

Fet.:

IC586

201

Agppm

IC586

..~~._~ .~;:c..~o,:":X..:~:..:rj:' ...~. ,

- .

Brisbane Head OHlclljo and labor.tory32 Shand Street, Stallard. Q. 4053P.O. Bolt 66, Everton P;ui<., Q 4053Telephone (07) 352 :5577Filcsimile: (07) 352 5109

PAGE 1

PROJECr No'


Znppm

IC58G

No. 01 SAMPLES28DATERECEIVED23/11/93

DATE COMPLETED22/ 12/93

928087

CONTROLPb

ppmIC58G

Cuppm

IC58€>

AUSTRALIANLABORATORYSERVICES P/LA,C.N. 009 936 029

3072

SAMPLE TYPE.QUAL I TYi '

I ELEMENT 'I'I UNITIMETHOD! '

II CLlENT.eRA EXPLORATION PTY LTD

ADDRESSP 0 BOX 8093NORTHLAND CENTREI VIC

CONTACTADM I N OFF I CER

I SAMPLE NUMBER

I*** 3184287*** 3184297*** 3184298

26.50Y.21.80t.:

9380

1041 .92%

477

4 I 91 .64t.:

482

591360

18

18.3618.589.73

IIIIIIII'ION LIMIT: 5 5 5 0.01

MMENTS:

IResults which appear on this report are routine laboratorychecks for QUALITY CONTROL purposes .

. .........,799155 Fax: (017') 79 9m-.-......,

: (on) e14'~ Fax:: (on) 81 4220;.. UOOretOlY

"

1&:31112Fv::IC'6:JI631189.....--: ) 'tIi \3iO Fu.; cQ5.4j <46 1389

...............,Phone: (091249 29138 FQ,IC; (09)249 2942Kalqoot'»e LatlontOlYl'tIone, 1090121 1451 Fa.>: (090121625.3Alb Spri,," L.a!Xft,loryPrlofte: (0891 52 6020 Fv: 1089) S2 s008Mt .... L.a~orvF't'o"ot: (Om 49 56£5 Fax; (CT7!-4S 55-48

I

ANALYTICAL REPORT2ofPAGE 2

Bri8bane Head Office and LaboratoryJ2 Sl'Iand Street. Sta~ora. a 4053P,O. 80;0; 66, Ellenan Park. Q. 4053Telepnone: (On 352 5577Fac9,mi!9: (07) 352 5109

PROJECT No.

LABOAATOAVBEND I GOBATCH NUMBEABE 1382- 0

No. of SAMPLEs28

DATE RECEIVE02 3 / 11/93DATE COMPLEOTED22/ 12/93

928088

CONTROL

801055505080

Nippm

IC586

68373

1 14

AUSTRALIANLABORATORYSERVICES P/LA.C.N. 009 936 029

3072

SAMPLE TVPE:QUAL I TYI • CoI ELEMENT II UNIT ppmI METHOD I C58 6, !

3184287 i31842973184298

*********

SAMPLE NUMBER

II CLiENTCRA EXPLORATION PTY LTD

ADDRESSP 0 BOX 8093NORTHLAND CENTREI VIC

CONTACTADMI N OFFI CER

IJNO.77352

IIIIIIIII

5 5

MMENTS.

I

,-... , :. ..'-:" .- -.~ _--:;<,-~. ': \." .,., •. "

IAnIA' n'~

*,*,''lIi'' "'II<'",,*T,,,,,*,,,,,,",* *""'OII''IO",*,A.C.N. 004 591 66~

ANALYTICAL DATA

~ ~~-------- - ------------

TOREPORT TEREPORT NSAMPLE PREFIX, o. DA ellEN RDER No. PAGE

1104165.6p.09901 24/12/93 177354 I 1 o~ ~

,~BESAMPLE v>cu V" /zn ~ Ye;' ~ Nt '20 "2r INo. No. Pb

1 3911732 54 <3 30 <1 1. 58 - 88 10 66 I,,

12 3911733 10 <3 363 <l - 11.50 2975 219 2477 13 3911734 119

i

'4

4 <3 <1 - 6.50 580 92 1468

3911735 165 7 78 <1 - 10.90 71 37 136

1:___ 3911736 327 2994 1090 7 - 17.60 474 586 81

c3911737 242 302 442 <l 4.45 - 13 33 49 ,

17 3911738 123 25 163 <1 - 13.80 57 50 47

Ie: .3911739 108 14 91 <1 - 11.00 40 30 43

3911740 271 9 230 <1 - 16.80 159 172 138

110 3911741 75 9 44 <l 2.25 - 31 11 54

11 3911746 3967 26 234 1 - ~.i. 7.30 - 2551 --93-·· ·--22·1--,

l12 3911751 90 <3 li6 <1 - 11. 30 354 43 195,13 3911752 225 12 85 <l - I 11.10 94 9 145

114 3911753 54 <3 125 <1 - 10.60 91 27 127

115 3911754A/ ilA/l.'j3j 6 208 <1 - 10.50 1432 84 332

.391175~~K~16 ---.., 247 <1 - 12.30 1743 90 320I! - I

.-~- ':>91D"5b" + -- ., ,~. ,", . ..- - _.~ --- _.. -- . -. f.---- ..~ ..

108 6 209 <1 - 11.30 1514 64 226

Y .t" , 0 /-.- c, /- 0

. h .. I .. " :r19

120

21

122

-23 DETECTION 2 3 2 1 0.01 0.01 3 ~ 7-'

J24 UNITS ppm ppm ppm ppm 'l. 'l. ppm ppm ppm

:1 25 /i1ETHOD GA140 GA140 GA140 GA140 GA140 GAI04 GA140GAl7Y7:/

Results in ppm unless othelVJise specifiedT = element present; bUI concentration 100 low 10 measure /},IP- X =elemenr concenU'ation is bek:lw detection limit AUTHOR/SEO

_ - =elemenl not C1elermined OFFICER

I '---.------ ------~------~"'"""------_..._-~--~~-_.

I

IIIIIIIIIIIIIIIIIII

•

APPENDIX IV

ROCK CHIP SAMPLE LEDGER & ASSA YS

928090

- - - - - - - - - - - - - - - - - - - -MELBA FLATS EL 43/92 - ROCK CHIP DATA BASE

SAMI'NO. DPO EAST NORTH PROSPECf BMRLITH FIELD ID TEXTURE ALTIMIN COLOUR COMMENTS PET SUSc.

AREA DI'O xlO·S SI

3308019 71516 366450 5366150 VAUDEAU Es Eb? D, I'y DV Py 2-5%. Mas.sive basaH·)

3308020 71516 366450 5366150 VAUDEAU Es 19b D, I'y DV Py 2-5%. Mas.sive basalt?

3308021 71516 366450 5366150 VAUDEAU Oms MS£h I'yCpPoNi Y Massive sulphide.

3313769 71540 368200 5367600 SERPENTINE HILL Esu Iu, Sh V

3528456 71540 366280 5365820 NICKEL REWARD Egnl am, I'y DVE Pyroxenile?

3528457 71540 366280 5365820 NICKEL REWARD Egm lu 13xSh I'y MuJlock heap

3528458 71540 366280 5365820 NICKEL REWARD Eglll rurgb VG Pyml:.enjcc

3528459 71540 366440 5366150 VAUDEAU Egm !urgb GV Mullock heap

3528460 71540 366440 5366150 VAUDEAU Egm 19b Py Mullock heap 5-1 O%Py

3528461 71540 366440 5366150 VAUDEAU Egm M, PyCpG' Mullock heap

3528462 71540 366320 5367620 NORTHCUNI Egm fu?Ssh? DNn Py Mullock heap

3528463 71540 366320 5367620 NORTIICUNI Egm OmsO"'q B, pyGnep MuJlock heap

3528464 71540 367080 5367850 LEAD BLOCKS Ell Sbx.Ssi? MaSj G, Mullock heap

3528465 71540 367080 5367850 LEAD BLOCKS Ell Mu\Ve G, Mullock heap

3528466 71540 367080 5367850 LEAD BLOCKS Ell Ssi SJWe SU Mullock heap

3528470 71540 367900 5367010 SERPENTINE I!lLL Eba SiOu? W<,:Fc

3528471 71540 367920 5367060 SERPENTINE HILL Eb, 1m Py

3528472 71540 367960 5367120 SERPENTINE HILL Eb. Eb

3528473 71540 368020 5367220 SERPENTINE HILL Eh. 1m Vn

3528474 71540 368080 5367320 SERPENTINE HILL Eba Ma

3528475 71540 368240 5367380 SERPENTINE HlI.L Eb. ImMll Lm 85sJ085

3528476 71540 368340 5367580 SERPENTINE HILL Eb. Imlus

3528417 71540 368400 5367640 SERPENTINE HII.L Eho rgblrn Al

3184279 17352 366320 5366090 VAUDEAU Evs Sw [3:\? G 17351 40

3184280 17352 366390 5366130 VAUDEAU Egm 19b Fo PyCp MG Mullock heap 60

3184281 77352 366390 5366130 VAUDEAU Egm 19b VnFoDs PyCp G Vfg sulph. «I % 50

3184282 77352 366390 5366130 YAUDEAU EO Ssi FiFr Py? G Mine. slate 40

3184283 77352 366390 5366130 VAUDEAU Egm 19b AlD, PySu MGV Mullock heap 30

3184284 77352 366390 5366130 VAUDEAU Egm 19b WeDs PySu DV Mullock heap 77151 70

3184285 77352 366390 5366130 VAUDEAU Ell Ssi V, SdSp?Ga N Mulloek heap 40

3184286 77352 366350 5367770 GENET'S WINZE Egm 19b We C, OLV Mullock: hear 30

3184287 77352 366350 5367770 GENET'S WINZE Egm 19b We C, MOV MulJock hear 20

3184288 77352 366350 5367770 GENET'S WINZE Ell Ssi VnBd PyPo?Cp? DG MuJlock heap 50

3184289 77352 366350 5367770 GENET'S wiNZE Egm 1m We DG Sljekenside. Soil 90

3184290 77352 366350 5367770 GEN ET'S WINZE Egm 1m DsVs $u F grainl.'.d.SJickensitles 77351 60

3184291 77352 366350 5367770 GENET'S WINZE EIl?Egm'? lu? CpNiCs MVN Hartl bk groundl11uss 77351 10

3184292 77352 366280 5365910 WESTVAUDEAU Ell Sw We V Vole. derh'ed. 30

3184293 77352 366275 5365910 WEST VAUDEAU Ell Ssi Bd LKO 10

3184294 77352 366260 5365920 WESTVAUDEAU EO Sw We V Vole. derived. 40

Page I


SAMlINO. DPO EAST NORTU PROSPECT llMRLlTH FIELD III TEXTURE ALTIMIN COLOUR COMMENTS PET SUSe.AREA Dl'O x10-5 51

3184295 77.>52 366320 5367610 NORTHcUNI Egm Oms VsBlI. Go\ISpSdQ1Z MulJock heap 103184296 77352 366320 5367610 NORTII CUN[ Egm Oms(gb? VsBll. GaSpPyQtz MVO MuJlock heap 303184297 77352 366320 53676[0 NORTH CUNI Egm A"" PyNillo Mullock heap 503/84298 77352 366320 5367610 NORTH CUNI Egm 19b We MVO Mullock heap 77351 603184299 77352 366320 5367610 NORTII CUNI Egm 19b Ds PyNjPo? MVO Mullock heap 77351 803184300 77352 366320 5367610 NORTH CUNI Ell Ssi lld LO Fine laminations 303911701 77352 366320 5367610 NORTIiCUNl Egm Oms VO GaSpPy r grained. MuJIock 103911702 77352 366320 5367610 NORTH CUi'll [gm 19b DsVs p,cr DV F grained. Mulloek: 7735/ 603911703 77352 366320 5367610 NORTIiCUNI Egm 19b MaVn DO F grained. Mullock 403911704 77352 366320 5367610 NORTH CUi'll Egm 19b Fo Py? MOW Mnllock heap 403911705 77352 366320 5367610 NORTH CUi'll Egm Oms M, CpNi? MuJJock hellp 1[90039[ 1706 77352 366320 5367610 NORTIl CUi'll Egm Oms M, Py Mullock heap 103911746 77354 366390 5366130 VAUDEAU Egm I" Ds SuPy DO Mullock heap 9039/1751 77354 366335 5366150 VAUDEAU Eglll [gb W. MLVY Exposed in trench 3S3911752 77354 366335 5366150 VAUDEAU Etl Sw W. V Exposed in trench 30391[753 77354 366335 5366100 VAUDEAU Ell SwSsi V Illlerclllaled Silts\onc 303911754 77354 366390 5366130 VAUDEAU Egm 19b D, NiP)' DVO Mullock heap 403911755 77354 366390 5366130 VAUDEAU Egm 19b Ds PyNj DVO MuJ£ock. heap 3D391 [756 77354 366390 5366130 VAUDEAU Egm IgbO"q D, PySu DVO Mullock. heap 20

Page 2


SAMPNO. EAST NORTH PROSPECT Ag Au Co Cr Cu Fe NI Pb Pd J~ S II Znppm ppm ppm ppm ppm % ppm ppm ppm ppm % ppm ppm

3308019 366450 5366150 VAUDEAU 325 3350 11.2 4950

3308020 366450 5366150 VAUDEAU 265 4550 9.76 2900

3308021 366450 5366150 VAUDEAU 155 30400 2.83 89400

3313769 368200 5367600 SERPENTINE HILL -1 58 tll2 6 776 3 25 46

3528456 366280 5365820 NICKEL REWARD 8 0.482 680 220 16600 22600 39 0.224 0.478 139 207 92

3528457 366280 5365820 NICKEL REWARD I 37 95 1911 1159 34 155 182

3528458 366280 5365820 NICKEL REWARD I 46 447 1164 1854 30 377 180

3528459 366400 5366140 IIAUDEAU -I 58 341 203 377 -3 268 119

3528460 366400 5366140 IIAUDEAU t 140 335 3176 440t 10 281 132

3528461 366400 5366140 VAUDEAU 9 1.27 1280 197 72100 35800 298 1.25 0.618 31.4 84 1178

3528462 366280 5367620 NORTH CUNI 1 72 113 1885 1162 25 189 160

3528463 366280 5367620 NORTH CUNI 221 94 119 2589 1403 41400 50 175000

3528464 367080 5367850 LE/\D BLOCKS 13 14 37 126 22 2000 15 21900

3528465 367080 5367850 LE/\D BLOCKS 33 4 10 52 -3 15000 ·5 7500

3528466 367080 5367850 LEAD BLOCKS I 27 139 40 78 82 212 275

3528470 367900 5367010 SEllPENTINE HILL -I 27 1764 48 271 -3 13 79

3528471 367920 5367060 SERPENTINE HILL -I 21 305 27 69 18 71 86

3528472 367960 5367120 SERPENTINE HILL -I 78 1471 12 1000 19 40 85

3528473 368020 5367220 SERPENTINE IlILL -I 27 274 98 23t 5 43 69

3528474 368080 5367320 SERPENTINE HILL -1 12 84 8 53 -3 31 37

3528475 368240 5367380 SEllPENTIN E lULL _t 69 886 3 772 4 24 64

3528476 368340 5367580 SERPENTINE IIlLL -I 87 1497 13 1362 -3 24 68

3528477 368400 5367640 SERPENTINE HILL .1 31 943 5 230 -3 10 35

3184279 366320 5366090 IIAUDEAU 2 13 168 8.30 81 137 143

3184280 366390 5366130 VAUDEAU 4 84 4630 9.30 2410 521 168

3184281 366390 5366130 VAUDEAU 2 19 94 8. IS 108 13 85

3184282 366390 5366130 VAUDEAU 2 29 189 7.30 171 16 140

3184283 366390 5366130 VAUDEAU 2 60 1240 7.69 1170 6 83

3184284 366390 5366130 VAUDEAU 5 0.28 206 11200 13.87 9680 34 0.46 0.33 318

3184285 366390 5366130 VAUDEAU 48 II 1320 12.49 176 2760 182000

3184286 366350 5367770 GENET'S WINZE 59 459 278000 18.43 4200 135 3620

3184287 366350 5367770 GENET'S WINZE 59 1.15 712 265000 18.99 8330 112 613 3.06 446

3184288 366350 5367770 GEN ET'S WINZE 2 37 4240 12.92 534 108 147

3184289 366350 5367770 GENET'S WINZE 1 20 427 17.54 229 33 119

3184290 366350 5367770 GENETS WINZE 2 31 3640 15.18 409 38 122

3184291 366350 5367770 GENET'S WINZE 5 1.30 1360 230000 20.08 9080 89 0.25 0.34 255

3184292 366150 5365920 WEST IIAUDEAU 1 51 521 1l.l7 200 19 197

3184293 366155 5365920 WEST VAUDEAU 1 26 216 11.29 100 10 105

3184294 366170 5365910 WESTVAUDEAU I 37 176 10.78 136 25 144

Page 3


SAM]-NO. EAST NORTH f'ROSP[CT AS Au Co Cr Cu Fe Ni Pb Pd J', S V Znppm ppm ppm ppm ppm % ppm ppm ppm ppm % ppm ppm

3184295 366320 5367610 NORTHCUNI 780 41 3290 1.87 1390 227000 1280003184296 366320 5367610 NORTHCUNI 790 0.22 408 25100 4.&6 21900 &4200 0.58 0.51 615003184291 366320 5367610 NORTHCUNI 1360 0.17 7J 2J8oo0 18.75 5610 19300 I. 82 0.95 J6400

3184298 366320 5367610 NORTIl CUN1 19 0.40 115 9800 9.92 5210 567 0.48 0.39 4953184299 366320 5367610 NORTH CUNI 8 0.12 139 5090 11.74 5170 141 0.22 O.l4 1813184300 366320 5367610 NORTH CUN1 3 19 1150 8.47 274 148 1223911701 366320 5367610 NORTH CUNI 530 O.OB IB3 24400 4.01 91BO 26500 0.27 022 389003911702 366320 5367610 NORTII CUNI 10 0.38 737 26500 20.44 29000 498 0.32 0.30 3563911703 366320 5367610 NORTII CUNJ 4 30 756 12.14 521 98 1473')11704 366320 5367610 NORTH CUNJ 4 124 3770 11.26 4830 53 1463911705 366320 5367610 NORTH CUNI 25 1.45 '600 96000 33.76 2720 98 0.22 0.94 2143911706 366320 5367610 NORTH CUNI 74 2.20 34 313000 27.37 512 397 8.59 7.26 5763911746 366390 5366130 VAUDEAU I 93 221 3967 17.3 255( 26 2343911751 366335 5366150 VAUDEAU -I 43 195 90 11.3 354 -3 1163911752 366335 5366150 VAUDEAU -1 9 145 225 1l.J 94 J2 853911753 366335 5366100 VAUDEAU -I 27 127 54 10.6 91 -3 125391J754 366390 5366130 VAUDEAU -I 84 332 453 10.5 ]432 6 2083911755 366390 5366130 VAUDEAU -I 90 320 112 12.3 1743 6 2473911756 366390 5366130 VAUDEAU -I 64 226 108 IL3 1514 6 209

Page 4

I ROCX.CHIP AJolO ORll.LIHG CODES I ,(2 (9 'J928095

I "OC\( C;C<lOiI as OOilr OUQli3/'1~d glllo~u:.~1 I":"lao

F"Jr nme OQSJ9nallon usa:-WEAT,...;E'::'lN3iSURF'lC:AL r~lURES

NI

NI

A a"""'d " I.oIcnled

• Purole V G""nA Mad < P'nli:

" 0""". " 51uey Yelle.., S SlI.... r

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es. C;3o!l.r see.

L3 Ur.lniurn·

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~ ?'I'rrnoliCe

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Fot F ,rn.rqlnCUS.

~ Fe 0, In traa

Lead sec.ondllnOlll.

!ire

t.. Liqhc

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N 9lac~

G Grl.,c arc",,,W While

c, Cl.a.y

2r :';IidCHe

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f3;I, G.a.ienaSo. SOl'\;,.llIrile

e::t Cl'talcggyrit8

MINERALlSATlONlALi'EAAnoo FEATlJRES

". GOll;.llOl,roo14 V, Vein- sulol'llde AI Allerl(lVn Veined 0. Ois.&4m sulol'l 51 SlIIciliad

0' Oissemin;,.,ced F, Fr::acu.lre sl.don

3. B.al"JQea 'Ulan

Ga:::t..e:i'oC.)L ~~TI.lFiES

eo BaOOllid F, Fr::aCtl.Hed ?o Poronyrilic50 a.no.d l. lruarc8ddad s: s.::.~leICl~"

8' Breccia.ted UO L.z.minalad "" ShoaandFI Fis.sile (slalll'" .... M.as:siv• VU 1I\I9'il"

~ WlIaln.r,d

31 81e;acnllld

LA L,;,.cn8(l

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lu Ullrarn.a.llc

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a Ct~.rs

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PIHm;an

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Silurian0.,,0";01(1

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Intrusive

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SI. Lime:llOl'le

5<, Ch"nSII alF

Sb, BrlilCciOL

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""

Con9IQ",e"ueSal'\(lsconll

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9101cK, snail

MCTAAOAPI-iIC

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""" 5cl'llst .... Amal'tioclile..... Gt:l.ol'lillc scnisl ""'" C alcsillc..1le

"" Grll,is.$ ,.., Hornlels

1N'fi:tus.'VE IGNEOUS

II FlIl!sic undilf. l; Inlll'tmed undil1.

l" F,14;':: po.....nyry lip lncetrn<!ld Cloroh

l•• Aolite lm M~tlc I,rn<:;liH.

lO' Gn.nil' Ido Oolerica!C;d Gr;l.n(ldioritlil 19b G~i:lro

EXiFl..SI\IE G'iECUS

Err Rhyolite E2n Ana.",iCI

=r Oacit. e Botsalt

SLJRFlCLlJ.. (COIlEAJ J",l'J.,l"E:Rw....

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!-'

I'

I

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ACN 004 591 664


PAGECLIENT ORDER No

~ _.- --_.- _._.- ---;--_._-. -- - --- --

REPORT DATEREPORT NoSAMPLE PREFIX

J ~04165. 60. 09900 3/01194 t7353 11 OF3

tUBESAMPLE ,CU " Pb In Ag FE FE Ni Co Cr INo. No. 0

1 f<;911707 266 23 122 <1 - 10.90 154 42 1113 I

J23911708 76 59 51 <l - 12.40 100 4 68

i3 3911709 1737 29 175 <l - 10.90 792 50 229 !

14 3911710 50 126 <l 7.07 104 30 417l

6 -

t: f3911711 64 130 90 <1 - 9.36 72 <3 156

3911712 37 3 84 <1 - 7.18 74 19 120

~3911713 10 50 24 <1 - 6.70 9 <3 153 i

3911714 69 835 223 <1 4.18 - 82 13 334

19 3911715 133 34 66 <l - 15.10 94 <3 286

l'O 3911716 123 9 142 <l - 17.60 83 <3 314

11 3911717 ,251 26 76 <l r - 16.10 227- <3 165

J12 3911718 423 46 55 <1 - 18.70 300 5 181

13 3911719 139 1338 85 <l - 13.00 113 7 150

r14 3911720 352 102 95 <1 - 12.10 964 38 769

f53911721 51 87 87 <l 3.32 - 44 6 116

16 3911722 21 41 407 <1 - 6.02 139 25 139

1lU-3911723 25. .., 1~,·14 115 <1 ~ 9.31 57 19 102

,5:;;:(~tj418 3911724 110 <1 - 10.50 244 31 371

Ir 19.\-i-~.'" j/ 'v"/"V

39 <3 1283911725 190 _ h9 74 <1 - 13.10- I - -"

It ::3911726 42 23 23 <1 - 6.77 44 <3 129

3911727 22"' , -69 11.0' <1 - 11.00 58 13 99

I~ 223911728 15 14 25 <1 3.92 - 23 <3 66

23 3911729 12 12 47 <l 4.30 - 25 6 199

Ir 24 3911730 20 24 43 <1 2.82 - 29 4 117

25 -- 358 ff/i.I

39l.,t 731 70 145 211 <l - 30.70 1651

Resuils in ppm unless otherwiSe specified 7/1T :: elemenl present but concentration 100 low [0 measureX :: element concentration is below detection limit AUTHORISED.... - e1em,nt not determined OFFICER , <FV-'---- -- ------ - ---~-~---- ----- ----~--,

:'1'>

.'.............. c~

*~,io~""~iI!.&:It"t,.:lg:l!",\;;M(,*,~,;Ir,a!'~*-".A.C.N. 004 591 664


PAGECLIENT ORDER NoREPORT DATEREPORT NoSAMPLE PREFIX

~04165.60.09900 t735312

,

3/01194 oF3i

TUBE SAMPLE CU .' Pb Zn Ag Fe Fe Ni. Co Cr I

IN; No. r

f3911742 15 11 70 <1 - 5.83 50 13 167 II

12 3911743 17 9 86 <1 - 9.09 61 - 17 160 I

I

p911744 8 14 823 <1 - 6.25 55 14- 82

(4 3911745 30.

23 80 <1 - 9.51 76 11 111

I:~ I

19.

10

1" - "',~_.. '

J12 I

13

l'4

t:: ,

~ Ii' .'

IIL 19

~... -._-

It ::r 22 /

I 23 DETECTION -/ 2 / 3 V 2 ../ 1 0.01/ 6.01 / 3 / 3 ,/ 7

I 24 UNITS ppm ppm ppm ppm I. I. ppm ppm ppm

25 .MEnIOD GA140 GA140 GA140 GA140 GA1l10 GA104 GA140 GA140 GJflyy'I

,Results in ppm unless otherwise specified dl7/T = element present; bul con<:entration 100 low 10 measure

AUTHORISEDX = elemenl concenlration is below detection limit'.4- ~ elemenl nol determined OFF(CER

1---------'--------------------.-----------------I

I..<

I'

........ - .......... __r-__,..... _

~""''''''' OIl """',*ej/f"''''_,* *,*t~"'" """'*'A.C.N. 004 59' 664


SAMPLE PREFIX REPORT No REPORT DATE CLIENT ORDER No PAGE

1104165.60.09900 13/01/94 177353 I 7 OF 3'"'TUBE SAMPLE Cr .'o. No. / -

1 3911731 1.82

2 -

3

1I4It:~,y

[19itO

11 - - . -_. . . ...

~2I13

.1415

.16:..:..:,-

~D...

I

I18.

,I

.19 i

I20

121 I

22 I,,v' / v - v' / v v' -/ I23 DETECTION 0.01 !

124 ,

UNITS ..!,.

--- #//125 ",METHOD GX404

Results in ppm unless. otherwise specifled

~fT = element present;' bul concentration too low to measureAUTHORISED., X =. element concentration is below detection limit

..:.~Iement nOI determined OFFICER

-1-------I

. ", ":,:': : - .<.: '.•.

"-------------- -- -- ----_ .. _----- -- -

~-OAl:x~alabs

I ANALYTICAL DATA

.\.l...~. 004 091 bb+

D2 8 09 9CLIENT ORDER NoREPORT DATEREPORT NoSAMPLE·PREFIX

Ir 1104165.60.09956 127/01/94 177355 I 1 OF 5

SAMPLE CU Pb I Zn Ag Ni Co Fe Fe Cr-

ItETHOD

No.

GA140 GA140 GA140 GA140 GA140 GA140 GA140 GA104 GA140

I~1 3912901 104 8 128 <1 116 30 - 13.100 264

3912902 962 <3 95 <1 63 13 - 16.000 3081

I 3 3912903 94 31 21 <1 22 <3 - 7.340 117 ii

I4 3912904 169 4 75 <1 78 11 - 20.400 193

5 3912905 81 4 93 <1: 74.

12 16.200 284~-/

Ik> 3912906 77 <3 94 <1 61 13 - 12.200 2231

<11,

3912907 41 22 116 134 16 - 17.000 235!

I 8 3912908 364 5 89 <1 155 13 - 15.400 2725,

I9 3912909 123 16 99 <1 173 23 - 15.100 613,

10 3912910 110 11 131 <1 519 46 - 11.100 848,

II

104'11 3912911 42 15 81 <1 58 6 - 7.750

3912912 12 I 113 40 <1 40 55 2.61 153 .12 -

I 13 3912913 24 31 18 <1 27 <3 1. 17 - 152

14 3912914 / 20 19- 22 <1 25 <3 1. 26 - 92

I,-

:-.. 15. 3'1<12915 60 - 22 79 <1 81 8 3.58 - 137

"I 0 39i2916 70 29 77 <1 67 10 - 7.170 147

3912917, 10 77 20 <1 16 <3 0.94 - 4117 .

I 18 13912918 58 199 66 <1 44 7 - 9.610 105

19 3912919 42 21 77 <1 51 9 - 12.200 158

I 20 3912920 19 5 95 <1 57 19 - 10.400 112

I 21 3912921 62 76 21 3 4 <3 - 6.780 57

3912922 23 42 89 <1 70 4 - 6.200 22222

I 23 3912923 174 61 76 <1 45 5 2.75 - 192

24 3912924 120 19 88 <1 70 13 - 11.800 143

I 25 3912925 250 28 110 <1 201 12 - 13.000 360

"'"I Resulls ;n ppm unie.. othe<W;se spec,r,ed IS ::: insufficient sample ~~AUTHORISEO 7/- = elemenl nol determined SNR = sample not receivedOFFICER

.-.- ._-.--,',.__ .- _._- -", .<--- • .- - - . -- -- ..----- -- ~-

_.. - - - ..... _.... '.

., :.' ..~ ... -.",'. -

~Ana:labS

1 ANALYTICAL DATA , B28100PAGE-CLIENT ORDER NoREPORT DATEREPORT NoSAMPLE PREFIX - -

I 1104165.60.09956 127/01/94 [77355 I 2 OF 5

SAMPLE Cu Pb Zn Ag Ni Co Fe Fe Cr

t"HOD

No.

GA140 GA140 GA140 GA140 GA140 GA140 GA140 GA104 GA140

11 3912926 161 7 130 <1 139 26 - 10.000 141

3912927 155 16 180 <1 169 8.2902 48 - 228

13 3912928 63 4 120 <1 199 22 4.39 - 105

.: 3912929 86 9 77 <1 98 12 - 9.820 200

3912930 106' 20 106- <1. 152 '13 - 11.800 242

It3912931 76

1

<3 89 <1 63 15 I· - 6.360 133

3912932 86 10 41 <1 19 <3 - 7.550 84

(8 ~

3912933 56 34 39 <1 57 4 - 7.610 108

t 1

9

0

3912934 71 <3 69 <1 46 5 - 14.900 204

3912935 43 <3 66 <1 132 17 - 10.000 325

r1 3912936 22 <3 63 <1 44 14 - 9.530 .152

3912937 12 11 36 <1 16 4 - 6.490 11512

(13 3912938 23 10 41 1 15 6 - 7.410 124

14 ~91-2939 / 35 4 38 <1 16 4 - 8.8Al) 136

tl.~-~

" .. "

1493912940 27 7 48 <1 30 6 4.80 - --, ..~

_.. -. ... ;. '-~

\,-

ID 391':2941 24 22 76 I <1 40 10 2.45 - 420

3912942 63 11 90 <1 48 16 - 9.740 22417

Ir18

-

3912943 58 12 110 <1 104 20 - 8.540 694

19 3912944 23 26 169 <1 79 18 - 5.160 210

II 20 3912945 14 54 38 <1 11 4 1.12 - 118

I 21 3912946 71 29 104 <1 77 16 - 13.600 241

22 3912947 111 16 57 <1 109 8 - 8.000 249

I 23 3912948 124 21 73 <1 65 5 - 16.900 298

24 3912949 86 23 95 <1 81 - 3 - 14.300 232

I 25 3912950 46 114 53 <1 80 10 - 6.660 196

f.su,,, 'n ppm unl... o'h....... ,poe,'ed IS '" insufficient sampleAUTHORISED~ ;::;:-

'" elemenl not determined 5NR ::: sample not receivedOFFICER

----- --- - ---- ,_. - - - -_.-'- ..•.._. - - -_._-- - - _._----- - - ~.- --

'I-, :','"

'O~n'alabs

1 ANALYTICAL DATA

1. L. , UU'+ J'::! I UU,

n2 8'1 0 1

0".'

CLIENT ORDER NoREPORT DATEREPORT NoSAMPLE PREFIX

r 1104165.60.09956 127/01194 177355 I 3 OF 5

SAMPLE Cu Pb Zn Ag Ni Co Fe Fe Cr

tETHOD

No.

GA140 GA140 GA140 GA140 GA140 GA140 GA140 GAI04 GA140

I~1 3912951 66 33 24 <1 23 <3 - 9.540 151 I

2 3912952 64 18 38 <l 21 <3 12.000 141 i-

I[ 3 3912953 28 22 17 <1 9 1 <3 1.11 - 6 0 1

4 3912954 1~~ 8 204 <1 54 4 - 15.500 385 I

It.. ..,

S 3912955 82 7 46 <1 30 <:S - 13.500 2251

1kJ-I

3912956 119 20 21 <1 80 <3 - 7.070 400 !

,3912957 40 55 165 <1 88 15 - 7.330 168

Ir 8 3912958 57 42 97 <l 130 14 - 5.140 164

9 3912959 64 20 130 <1 109 19 - 6.630 1127

I 10 3912960 53 121

155 <1 116 27 4.39 - 620

I 11 3912961 67 9 21.1 <1 127 411

4.51 - 487

12 3912962 44 14 96 <l 60 I 14 - 6.240 864

I 13 3912963 64 28 103 <1 81 15 - 9.640 475-14 3912964 68 22 101 <l 91 17 - 9.700 746

t ts_

. . - - -

3',h2965 81 22 94 <l 75 14 - 6.890_.

252; -, ,- . c.. . •..... -' '.' .,. ,.~. .

1°3912966 30 22 62 <1 63 8 3.80 - 147

3912967 38 9 68 <1 53 9 - 7.900 58317

I 3912968 39 24 115 <1 77 15 3.08 - 63318

3912969 28 112 85 <l 24 5 2.66 - 896

I19

20 3912970 27 265 111 <1 35 13 2.80 - 748

I 21 ·3912971 25 32 59 <1 13 4 1. 41 - 614

22 3912972 41 39 207 <1 72 25 - 6.400 249

I 23 3912973 28 44 126 <1 42 13 - 5.490 197

24 3912974 19 74 81 <l 38 6 2.74 - 164

1 25 3912975 20 291 97 <1 38 4 1.88 - 198~

t=lesulls in ppm unless oth8I"'Nise specified ./'./ -z::.IS '" insufficient sampleAUTHORISED y.;;.'"- -= element not determined SNR = sample not re1:;eived OFFICER .,. •

- - - - - -- . -- "---- -- .- - --~~-_._ .. - . - -1"I

~.¥inalaDS

• ANALYTICAL DATAff28102

SAMPLE PREFIX REPORT No REPORT DATE CLIENT ORDER No

I 1104165.60.09956 127/01194 177355 I 4 OF 5

SAMPLECU Pb Zn Ag .Ni Co Fe Fe

INo. C,.-

METHOD GA140 GA140 GA140 GA140 GA140 GA140 GA140 GAI04 GA140 !

I1 3912976 37 176 34 <1 14 <3 0.86 - 278

2 3912977 48 436 75 <1 22 7 3.05 - 185

:-3 3912978 77 991 30 <1 81 <3 2.39 - 266

I 4 3912979 15 48 62 <1 11 3 3.77 - 190

;- . ,5 3912980 '147 152 198 <l 162 11 - 8.190 501

,

ki- 131:. 3912981 24 97 <1 40 10 - 8.300 217

3912982 41 151 <1 1737 62 4.10 - 150

il 8 3912983 65 92 236 <1 157 31 - 8.550 225

I 9 3912984 116 927 43 <1 25 <3 - 5.240 193i. 10 3912985 382 40 90 <1 88 3 - 9.400 308ii. 11 3912986 364 36 63 <1 267 6 - 14.200 322

12 3912987 128 23 85 <l 71 3 10.100 160-

:. 13 35'12988 83 12 122 <1 79 <3 - 12.300 260,I 14 3912989 95 22 235 <1 55 <3 - 19.600 250

il , . ,.'.

~ 1.S..' :3~2990 110 63 150 (1 52. 3 - 16.000 175, ,. ,-- ... ..,.. • c.· . " " ~ ..-, -"". ",'-'~" - ,~ .. ~ .,--;-"'''',..-....-.- ..,;..,....,.--:,.~..,., -.. ..-" .-}, .

0 ";. 3912991 78 47 62 <1 80 3 - 10.500 293"

17 39'12992 144 20 174 <1 204 26 - 9.390 269

I 18 3912993 28 26 39 <1 31 (3 2.56 - 102

,: 19 3912994 13 70 24 <l 16 <3 1.87 - 79..

I 20 3912995 13 25 25 <1 13 3 3.47 - 105

j

I21 3912996 8 16 18 <1 7 (3 1. 46 - 144

22 3912997 12 25 20 2 9 (3 0.85 91I -,I

I 23 3912998 63 7 111 <1 53 16 - 8.540 118

,24 3912999 32 48 66 <l 33 10 3.63 - 158

I 25 3913000 17 9 72 <l 34 10 4.80 - 183

~ ~.Results in ppm unless ofherwisa specified IS = insuHicient sample -'AUTHORISED- " element not determined SNR = samole not received

OFFICER 7 _~

- _.----,--- "-" .. .. _- .~ .. -- " .... -~~._ .. . - --,' - .._~--- -- "-... -- - - "

"DAnalabsI :.

ANALYTICAL DATA

A.L.:\. 004 :)91 66+

928103

127/01/94 177355fSAMPLE PREFIX REPORT No

T104165.60.09956

REPORT DATE CUENT ORDER No

I 5

PAGE

OF 5

l-HODSAMPLE

No. Cu

GA140

Pb Zn Ag

GA140 GA140 GA140

Ni Co Fe

GA140 GA140 GA~40

Fe

GA104

Cr-

GA140

I:

f4.-

,," ljiI

!- I'

..

, ,

17

Ir-_l-------+-------I-----l-----l----l---I------I~-_l--_l---

1'l"-_'_8-.j_----,- -.j -+ --+----I----'--,_-+ -+ -+- +- +- +- _

I19 • t20

2211--2_

1-------+-------1----4----+---1----+----+-----1---+----+---:

Ir-----+-----------t------i----I-----+---,---~+---------1-----------1--------+--------+---'

23"~-J________,.L___' ~__,.____+__7"____+_____r----+---r--___+____r'_____--f---T--__+_______r__

I '---:_:-I-_D_E_T_E_:_N_T_::-;-+-/-p-p-m-2

+--/-pp-m-3+-/-p-p-:-+-/-p-p-m-

1+/--p-pm-

3+---/_p_pm_

3-+1_/_0_"_0_:.+-_-6_"_0_0_::-1

1

_J_p_p_~_

Results in ppm uniess otherwise specified IS = insufficient sample- "" elemenl not determined . -i~mp,e ':10! ~ec9i"'~d

~---,.,

AUTHORISED ~.('\FFK:: l= A -------... .

I ".

IIIII:.II

j

III,.III,~I

IIII

APPENDIX V

PETROLOGY REPORTS

928104

PETROLOGICAL DESCRIPTION OF SOME ROCKS FROM TASMANIA

IIIIIIIr~,

IIIIII !\_~

IIIIIII

Martin Gole and AssociatesGeological and Petrological Services

REPORT TO: CRA EXPLORATION

1)Po ,\541

Martin GaleApril 1993

A Division of An~coHoldings Ply LtdA.C.N. rN9 446 511

9281058 Londor Rood

Gooseberry HIli WA tD76

Telephone (09) 293 4958

IIIIIIIIIIIIII~I

IIII

~)28106

SUMMARY

Eleven polished thin sections of rocks from western Tasmania. areherein described. All are metamorphosed or otherwise alteredigneous rocks that can be divided into two groups: sulphidebearing samples and serpentinised or partly serpentinisedolivine-rich cumulates.

There are two sulphide-bearing rocks. Sample 3528483 is aweathered chlorite-plagioclase-sulphide schist containing 15%pyrite, pyrrhotite and ·chalcopyrite. It has vague pseudomorpheddoleritic textures in places but is too chlorite-rich to bederived by straight forward metamorphism of dolerite or gabbro.The sulphides do not have typical magmatic textures. The rockmay have been metasomatised and extensively recrystallised but amore definitive interpretation is not possible.

Sample 3528484 is massive sulphide and consists of pyrite,pentlandite, pyrrhotite, minor chalcopyrite, chromite, quartz,carbonate and stilpnomlane. The chromite is, in places, skeletaland this strongly suggests that the sulphides crystallised in amafic/ultramafic magmatic environment. The presence of quartz insuch an assemblage suggests that the sulphides have beenmetasomatised to some degree.

The serpentinised olivine-rich rocks consist of altered olivineorthocumulates, mesocumulates and adcumulates with one samplecontaining appreciable cumulate-textured pseudomorphed pyroxene.The present mineralogy consists dominantly of lizarditeserpentine with minor magnetite with varying proportions ofchlorite, brucite, pyroaurite and tremolite with a few samplescontaining relict igneous olivine and a trace of clinopyroxene.All samples contain relict igneous chromite. Only where theigneous porosity is moderate (ie in the orthocumulates and somemesocumulates) are relict igneous textures apparent. In most·rocks the olivine grains were very tightly packed and it is notpossible to recognise the former olivine grain boundaries. Insome samples the shape of relict chromite grains is a guide tothe igneous porosity of the protolith.

No sulphides or oxidised sulphides are present in the rocks.Sample 3528488 has a crude igneous layering defined by variationsin the proportions of pseudomorphed olivine and pyroxene.

The current mineralogy and textures do not provide a clearindication as to the origin and history of the rock. Thepossible pseudomorphed doleritic textures suggests a maficigneous protolith. However the current mineralogy is far toochlorite-rich for such a parent. This may suggest that the rockhas been metasomatically altered but a more definitiveinterterpretation is not possible.

The sulphides are distributed evenly throughout the rock. Inplaces chalcopyrite, pyrite and pyrrhotite form unusual bandedaggregates. The scale of the banding and its randon orientationsuggests that structure may reflect cleavage planes in mineralsthat have been replaced by the current sUlphide assemblage. Thetextures of the sUlphides appear to be all metamorphic ratherthan igneous and give no indication as to whether they arerecrystallised magmatic sUlphides or have some other origin.

Weakly foliated fabric defined by poorly defined anastromosingnetwork of chlorite-rich folia and alignment of sulphideaggregates separating domains of more or less massive, finelyintergrown Chlorite, murky plagioclase and quartz. In themassive domains chlorite needles have random orientations as havevague tabular laths of plagioclase. The murky nature of thefeldspar is due to weathering and this unfortunately maskstextural details of the feldspar intergrowths. However thefeldspar grains in places appear to define a doleritic texture.

SAMPLE 35~8483

928107Polished thin section

mode %4530

884311

trtr

MineralogyChloritePlagioclaseQuartzPyritePyrrhotiteChalcopyriteTitaniteTremoliteIlmeniteMagnetite

CHLORITE PLAGIOCLASE SULPHIDE SCHIST

IIIIIIIIIItIIIIIIIII

928108

... :~~ '.~ ~~..a,/~.~. ;/J~

.,.'..... ..... ,~",!,.,~" .A ,', ".' ~• . ..~. >,~.' " l-'~';"'.

~ .... ...<t f

. ,,~'r.. :: .•.,', ' .•~'-.~ ">[' ~~':. -'/ /.,'. .... ,.... , ,~~ ' .•: ', l '- •••.. .; ';.:'~'-:/.,A, ';.. ' .. ~r.. ... ,", ....

. " .... '''J' "#>,., '''''/ ,."'.~'\ " ) .., .~)"" ' ..'.' ..' '. •• ..... t ~.~ .... "', ~:' , ~~:/J.

, . .~

Sample 3528483. Banded intergrowth of pyrite, pyrrhotite(both pale 'yellow) and chalcopyrite (yellow). The dark greyareas are silicates. Reflected light. Field of view (FOV) =1. 3 mm.

Quartz forms a vein or patch within the sulphide.stilpnomalaneand carbonate are present as patches and veins within the quartzand as scattered grains throughout the SUlphide. The quartz andsome carbonate appear to be in textural equilibrium with thesulpdide although stilpnomlane and some carbonate appearretrograde.

The mineral assemblage is unusual with chromite and pentlanditein the same rock as quartz. The presence of chromite,particularly the sheletal chromite, is very strong evidence thatthe sulphides are magmatic in origin. The quartz and carbonatesuggest that the SUlphides have been metasomatised. The sulphidetextures, with intergrown ragged grains, are net magmatic andsuggests that the sulphides have been extensively recrystallised,probably. during the metasomatism.

The sUlphide mode is variable with pentlandite-pyrrhotite-pyritepatches and chalcopyrite-pyrite patches. The sUlphides occurmostly in somewhat ragged intergrowths with a few areas ofpolygonal-textured aggregates. Pyrite, pentlandite andchalcopyrite are fresh whereas pyrrhotite is altered (presumablydue to weathering) with a greyish bloom. Minor goethite occursas alteration-to SUlphides along some grain boundaries and in apatch where boxworks after sulphides are present. Chromite isintergrown with sUlphides as equaht O.lmm sized grains and asunusual, almost skeletal grains.

MASSIVE SULPHIDE

928109Polished thin section

mode %30252015

432

0.50.5

SAMPLE 3528484

MineralogyPyritePyrrhotitePentlanditeChalcopyriteQuartzChromiteCarbonateStilpnomalaneGoethite

IIIIIIIIIIIIIII~I

IIII

928110

Sample 3528484. Intergrowth of pentlandite, pyrite (bothpale yellow), altered pyrrhotite (dark murky grey, black),minor chalcopyrite (yellow) and trace chromite (light grey).Reflected light. FOV = 2.6 mm.

••

• •• '; 4 ,,'

d'-.J;rr #.- " .

Sample 3528484. Chalcopyrite-rich patch within massivesulphide composed of chalcopyrite (yellow), pyrite (paleyellow) and skeletal chromite (dark grey). Pyrite andchromite are closely intergrown. Reflrcted light.FOV = 1. 3 rom.

for T. Aravanis, eRA Exploration Ltd., Preston

3184284. Ni-Cu mineralised, chloritised gabbro.

3184279. Crackle-brecciated greywacke.

9281111

No. 77351. PETROGRAPHIC NOTES FOR 7 SAMPLESOF CAMBRIAN SEDIMENTS AND INTRUSIVES

The only fresh igneous relics are <2-mm anhedral brownhornblende (5-7%) which is commonly overgrown with actinolite.Abundant <2-mm tabular plagioclase has been altered· almost completely to masses of <0.2-mm chlorite, with only rare relics ofalbite. Abundant 0.2-2 mm anhedral and stubby prismatic pyroxeneshave been altered to chlorite dusted with a little fine pyrite,which has grown along cleavages and fractures. Minor masses of<0.2-mm ankerite have probably replaced augite. Minor clustered<0.3-mm anhedral ?secondary quartz is associated with sulphides(q.v.) and albitised plagioclase relics. Clustered <0.2-mm titanomagnetite- (1-2%) is completely altered to microcrystallinesphene: on the other hand, very minor anhedral and tabular <0.5rom ilmenite remains fresh.

The actinolite suggests low-grade metamorphism in the middlegreenschist facies or its contact-metamorphic equivalent at say,300-400 oC. Though poorly preserved, the texture is an intrusiveone. Lack of chromite indicates that the rock was probably thole-

This dark green sample is a mass of <0.5-mm (but otherwiseunsorted) angular crystal and rock fragments, with rare rockfragments up to 5 mm across.

The commonest clasts are quartz of various kinds: unstrainedsingle crystals, aggregates of 50-11m anhedra dusted with veryfine sericite, and chert. Almost as common are ferromagnesiancrystal fragments altered to masses of very fine chlorite or abright orange, near-isotropic sheet silicate. About 15% of thefragments are very heavily sericitised ?plagioclase. Fe-Ti oxidefragments (2-3%) have been altered to microcrystalline sphene.<0.3-mm flakes of clastic whitemica form about 0.5% of the sampIe. Rare <5-mm rock fragments seem to be ripped-up finergrained relatives of the enclosing sediment.

Prominent <l-mm algal mats consist of fine flaky pyrobitumen, which also occurs in rare veinlets.

Minor fractures spaced on a cm scale show varying, slightamounts of movement.

The source seems to be mixed. Much of it is mafic, but theunstrained quartz may have a felsic igneous, or metamorphicsource. Perhaps some is from ocean-floor hydrothermal deposits.There is no chromite, an indication that little or no boninite orultramafic intrusive rocks were exposed in the source area.

IIIIIIIIIIIIIIII~

I

I 3928112

I With~ (see'I sug-

I, lakY

cite.seudo-

i ustthe

e asent by

·lined

,..opedlll'dral

,I"arsea>per<30-l1m

I Uded; ting

d in

II.e, al-

fa~a:50%

: acti-

I growntered

tal lineIstill

ths or

l edralanheyrite

mite?) .Icopy-

II

1299. Ni-cu mineralised, serpentinised gabbro.

This slightly coarser-grained relative of 3184284 is alteredrely to a sheet silicate whose moderate birefringence is more,atible with a serpentine mineral than with chlorite. Nolibole remains: and it is usually impossible to distinguish,entinised pyroxenes from serpentinised plagioclase. Rare!-rom subhedral chromite indicates a primitive, perhaps even~nitic composition. Prominent minor <0.2-rom tablets of mainly.entinised biotite suggest contamination from melted crustalirial. Very minor clustered <0.2-rom octahedral magnetite, some,ontact with rare (though fresh) ilmenite and chromite, areired to soft masses of microcrystalline limonite, serpentine,!sphene.I Disseminated anhedral 1-300 11m chalcopyrite and 10-500 11m:erite account for about 2-3% each of eu and Ni. Most miller,has minor fine inclusions of pyrite. Some millerite formsd <10-rom stringers with a little quartz.

Minor serpentinised irregular bodies up to 10 rom across areinguished by lack of disseminated sulphides. Though it is notous what they were, they may be relics of partly meltedtal xenoliths.

702. Cu-Ni mineralised, serpentinised gabbro.

This is a coarser relative of3184299 had an original grainaround 2-5 rom. It lacks chromite; and serpentine-sphene

cs of magnetite are coarser and more anhedral.Dissemina ted 5-\lID to <2-rom chalcopyrite, partly replacing

)xenes, forms about 25 vol. % of the rock, suggesting as much,counting for 15% Cu. <0.5-rom millerite, occurring with chal:ite, but also forming minor stringers with quartz, suggestsIple of percent Ni.'A 15x5 rom ovoid body consists mainly of mas·sive pyrite with. <0. 5-rom millerite, minor fine inclusions of quartz, and;ures filled with serpentine. It may be a concretion, relictlide bleb, or an altered xenolith.

GENERAL COMMENTS

li-eu sulphide assemblage

This is quite rich Ni-eu mineralisation, in which the mainmeral, millerite (NiS, c. 60% Ni with almost no Fe) couldhly produce a much better Ni concentrate than pentlandite6% Ni, 26% Fe), the ore mineral of most Ni deposits.A major question is: is this magmatic sUlphide or hydrotherineralisation? The high content of Ni, and absence of Zn and:rongly suggest a magmatic origin. Though the sulphide tex-

and mineralogy reflect low-T hydrothermal crystallisation,may be an overprint on a magmatic sulphide system.

REFERENCES

928113

BARNES, H.L. (1979) Ed. Geochemistry of hydrothermal ore deposits. Wiley Interscience, New York.

The chemographic relations of some relevant sulphides in theNi-Fe-S system are shown in Fig. 1. Most compositions plotted aretaken from Patterson & Watkinson (1984). The composition of thesulphide assemblage in the present samples falls close to millerite (NiS) on the pyrite-millerite join, whereas fresh magmaticsulphide ores plot in the pyrite-pyrrhotite-pentlandite triangleclosest to pyrrhotite. In other words these sulphides are too Fepoor to represent a sulphide liquid separating from a mafic melt.However it is common for chloritic alteration at low f o.2 toabsorb Fe from the sulphide assemblage, and enrich the res1dualsulphides in Ni and Cu compared with the high-T assemblage.Perhaps reaction of formerly abundant pyrrhotite with low-S, lowT hydrothermal fluid is responsible for the chlorite/serpentinealteration.

The presence of millerite rather than pentlandite is theonly unusual feature, indicating alteration at higher f S2 than inmost sulphide-liquid derived ores, which produce pentlandite oncooling. Millerite indicates f S2 much higher than heazlewoodite(which needs the very low-S enV1ronment of serpentinising peridotite). The reaction millerite + S2 -) polydymite (Ni 3 S4 ) placesan upper f S2 limit for millerite about 2 log units above pyritepyrrhotite (Barnes, 1979, p 387). Pyrite + millerite are stablerelative to violarite + monosulphide solid solution only atT<200o (Barnes, 1979; p 327). The assemblage pyrite-milleriteseems to have developed from violarite (a ?metastable sulphidation product of pentlanditel during metamorphism of magmatic CuNi sulphides at the Thierry Mine, Ontario (Patterson & Watkinson,1984); these sulphides are also strongly depleted in Fe. Actinolite in the present samples suggests metamorphism, possibly by aDevonian granite of the original Cambrian assemblage, and Isuggest that millerite crystallised during the waning stages ofmetamorphism.

the3-

of22,

geologyMineral. ,

D.H. WATKINSON (1984). Thenorthwestern Ontario. Can.

PATTERSON, G.C. &Thierry Cu-Ni mine,11.


5

Fig. 1. Some relevant phases in the system Ni-Fe-S. Most compositions are taken from Patterson & Watkinson (1984). Traces of Cuin po1ydymite are plotted with Fe; and traces of Co with Ni.

IIIIIIIIIIIII1IIIIII

s

Pyrite

Violarite .

PyrrhotitePentlandite .

FeLCu)

!)28114

lJaesitePolydYl'lite-Co

•• Polydylllite-CuMiller i te

Hea.z lewood ite

"i,Co

R.N. ENGLAND,11 Victor St.,Cranbrook(Townsville) ,Queensland 4814.(077)735407February 13, 1994

928001 - mineral resources tasmania

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