ground geophysical work consisting of horizontal loop

12
42AMNEMH8 3 .2618 REAUME 0 10 REPORT ON GEOPHYSICAL SURVEYS ON PROPERTY OF WESTERN MINES LIMITED (GRIDS No. 6 a nd 27) REAUME TOWNSHIP PORCUPINE MINING DIVISION ONTARIO INTRODUCTION Ground geophysical work consisting of horizontal loop electro magnetic surveys, vertical loop electromagnetic surveys and magnet ometer surveys was carried out for Western Mines Limited over two claim groups located in Reaume Township, Porcupine Mining Division, Ontario, during December, 1977. The following report and accompanying map describes the results of the surveys and gives a geological interpretation of the results. t PROPERTY AND LOCATION The property surveyed includes grid area No. 27, consisting of a contiguous group of 5 claims and grid area No. 6 , where several

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Page 1: Ground geophysical work consisting of horizontal loop

42AMNEMH8 3 .2618 REAUME 010

REPORT

ON

GEOPHYSICAL SURVEYS

ON PROPERTY OF

WESTERN MINES LIMITED

(GRIDS No. 6 and 27)

REAUME TOWNSHIP

PORCUPINE MINING DIVISION

ONTARIO

INTRODUCTION

Ground geophysical work consisting of horizontal loop electro

magnetic surveys, vertical loop electromagnetic surveys and magnet

ometer surveys was carried out for Western Mines Limited over two

claim groups located in Reaume Township, Porcupine Mining Division,

Ontario, during December, 1977.

The following report and accompanying map describes the results

of the surveys and gives a geological interpretation of the results.

t

PROPERTY AND LOCATION

The property surveyed includes grid area No. 27, consisting of

a contiguous group of 5 claims and grid area No. 6 , where several

Page 2: Ground geophysical work consisting of horizontal loop

. 2 -

detail lines were surveyed to detail conductive zones indicated

in a previous survey. The grids are located in the Northeast

quarter of Reaume Township, approximately 13 miles south of the

Town of Cochrane. Access is by snowmobile or muskeg tractor from

the Reaume Lake logging road.

The claims are shown on the accompanying location sketches

and are more precisely described as follows:-

Grid No. 6

P 442507 P 442508 P 442518 P 442519

Grid No.27

P 499313 P 499314 P 499315 P 499316 P 499317

SURVEY METHOD AND PRESENTATION OF RESULTS

The horizontal loop electromagnetic survey employed the Apex

Maxmin II electromagnetic instrument operated in the horizontal

coil configuration with a transmitter-receiver separation of 600

feet. Readings of the in-phase and out-of-phase components of the i

resultant field at 444 Hz were recorded at station intervals of

100 feet, along grid lines cut at 400 feet spacings.

The ideal profile of readings over a conductive body forms

a curve with positive shoulders as the conductor is approached and

Page 3: Ground geophysical work consisting of horizontal loop

"i

a negative trough over the conductor. Both the in-phase and out-

of-phase readings show the same general curve except in areas of

deep conductive overburden, where phase rotation phenomena can

alter the ideal type curve. The ratio between the in-phase and

out-of-phase response over a conductive zone provides an indica

tion of the conductivity of the underlying body, as does conduct

ivity thickness determinations (mhos). In general, the ratio of

the in-phase to out-of-phase increases as the conductivity of the

underlying body increases and a ratio of 1.0 or greater is con

sidered to be typical of the response generated over a massive

sulfide body.

The vertical loop electromaqnetic survey was conducted as an

aid to interpretation of conductors indicated by the horizontal

loop survey. In general, this survey was carried out only in the

immediate vicinity of the conductor axes. The survey employed

the McPhar R.E.M., vertical loop system with readings taken at

100 feet intervals over the horizontal loop indicated conductors.

Readings of the tilt of the major axis of the ellipse of polar

ization were recorded in degrees at 1000 Hz and 5000 Hz. In

general, the resultant field over a conductor dips below the

reference line on one side of a conductor and above the reference

line on the other. The conductor axis is located below the in

flexion point, where the tilt angle is zero.

The survey was carried out using the fixed transmitter tech-

Page 4: Ground geophysical work consisting of horizontal loop

- 4 -

nique with the transmitter set up over the conductor axis in order

to more precisely outline the conductors.

The magnetometer survey employed the McPhar M700 Fluxgate

magnetometer measuring the variations of the vertical component

of the earth's magnetic field. The magnetic responses, as plotted

on the accompanying map, are corrected for diurnal variation and

instrument drift, and are contoured at appropriate intervals.

Magnetic base stations were set up at appropriate locations as

shown on the accompanying map. For the purpose of diurnal and

drift corrections, base station readings were used as reference

readings at not greater than one hour time intervals during the

survey.

The surveys are plotted on separate maps at a scale of l

inch to 200 feet.

INTERPRETATION OF RESULTS OF GEOPHYSICAL PROGRAM

Grid No. 6 Area

The horizontal loop electromagnetic survey over

grid No. 6 area, shows long positive approach

effects on all lines surveyed. In the author's

opinion, this is due to nearby conductive zonest

with a strike nearly paralleling the present north-

south grid lines. In order to outline these probable'

conductors it would be necessary to establish a new

grid. Based on the present limited results, the new

Page 5: Ground geophysical work consisting of horizontal loop

grid lines should be established in a northeasterly

direction.

Grid No. 27 Area

The horizontal loop electromagnetic survey, as

plotted on the accompanying map outlines 5 conductors

(conductors 1,2,3,4 and 5) trending in a general east-

west direction. None of the conductors show correlation

with magnetic anomalies. The conductors are weak and

display poor conductivity consistent with conductors

caused by the edges of conductive overburden deposits

along buried ridges. In general, the results of the

vertical loop survey confirm the presence of the poorly

conductive zones outlined by the horizontal loop method

but the vertical loop results are somewhat cluttered.

Horizontal loop conductor No. 4, is not confirmed by

the vertical loop survey but a vertical loop conductor

axes is outlined approximately 200 feet south of horizon

tal loop conductor No. 4.

Timmins, Ontario. December 31, 1977.

Respectfully submitted,

tfU/foyZi&f'E. W. BazUnet, P. Eng. Desianate-d Consultant.

Page 6: Ground geophysical work consisting of horizontal loop

GEO:Ontario

42A14NEM18 REAUME 300TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORT v if

FACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT "lm 4i TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSION.S ETC. 11

Type of Survey(s) Vertical Loop ElectromagneticTownship or Area Reaume Township_____________^Claim Holder(s) Western Mines Limited____;.. : . rV'. ; j:

Survey nnmpny E. W. Bazinet Mining St Exploration Author of Report E. W. Bazinet__________^ Address of Author 456 Brousseau Ave., Timmins f Covering Dates of Survey Dec, l to Dec. 31, 1977.

(linecutting to office) Total Miles of Line Cut______________________fc

f

SPECIAL PROVISIONSCREDITS REQUESTED

s ENTER 40 days (includes line cutting) for first survey.ENTER 20 days for each additional survey using same grid.

. •OAYB-^;- Geophysical PW^atin;^

— Magnetnmfttwr T T4 ^T

-.OtWr

(7fr*|ngjffll ——- r

C,fnfhfmirst] ———— ̂ —— '̂ .1 ' ' : . . '..'.yf~ . ' ^

AIRBORNE CREDITS (Special provision crediu do not apply to airborne wrveyi)

Magnetometer———— Electromagnetic

nATP, Dec. 31/77

. Radiometric(enter dayi per claim)

SIGNATURE:^.ithor of or Agent

/-•D

t numerically'•'''

jtljl.ji^H^f^fliiJtl^

5&3U1.:

Res. Geo!.. .QualificationsPrevious Surveys

File No. Type Date Claim Holderlf*f*^^

i*'t*.t'M'it**fi'i*ii^*tii''i"*4fe*'4|iifli**it*itfli

M

i

Page 7: Ground geophysical work consisting of horizontal loop

NOTES

400' surface rights reservation along the shores of all lakes and rivers.

Subdivision of this township into tots and concessions was annulled July 9,1962.

SAND and GRAVEL

Grovel ReserveGrovel ReserveGravel Reserve

File: 144579 File: 144585 File: 173973

DATE OF ISSUE

FEB171973

SURVEYS AND MAPPING .. ..-BRANCH^

FOURNIER TP. M.477

10

oUJ CD

CONCESSION l

T —— ~ IR

l lj j l 452200 j

443634 l 443636 l ,————— -H ————— H -P. l P.

l 452501

l 1437979 437977 l 437978

L ___J---..!. J

! 443635 443637. . . ̂ -l__ I.-..L — — — -I ——— - -l- - - - P P . a i p t D

499314 IJ4993IB

L-——L

f —— -,.- —— 4-——.-- ——

i \ s ^~~~— ——— -4-—————— ————- Jf. — — — -p — — — T .-- —JL.— -. -jr. , D , n IB i o ^••••* D

372140 l 372141 I 38/OOO ' 382001 l 401706 42rB645V 428646 l 428650

IP. TP. IP. /^-JP. i\P^^ IR

14628U____j--p p *o ~~i~ ~D~ F "~"o~*~~"T ~~" — T" ~yf~^~~f' "~ "T" ~" ~~ T"

1426639 ' 4286401 428641 1428642——r~~" ~* "i— ~~1~ ———f- — ——

493217 .- - - - ~T-P. , P.

J.—"-I..___J

382343 i-' 362342l—————— ± —————4. --———

R j P. i ./R

i A382344 ' 38234B ' 382346

3823491 382348! 382347j

493287 ' 382352 382353

499283 [499282 499281 1499280 l t l l493286 382351 l 382350 i 382767 '

O O)

a:

42Ai4NEeeie s.aeie REAUME

S.E. CORNER CO-ORDINATES(ApproK.)

LAT. 48* 53* 04" DER 81* 04' 28"

LUCAS TP M.537

DUFF TP M.466

______LEGEND

HIGHWAY AND ROUTE No.

OTHER ROADS

TRAILS

SURVEYED LINES:TOWNSHIPS. BASE LINES, ETC. LOTS, MINING CLAIMS, PARCELS, ETC.

UNSURVEYED LINES: LOT LINES PARCEL BOUNDARY MINING CLAIMS ETC.

RAILWAY AND RIGHT OF WAY

UTILITY LIMES

NON-PERENNIAL STREAM

FLOODING OR FLOODING RIGHTS

SUBDIVISION

ORIGINAL SHORELINE

MARSH OR MUSKEG

MINES

DISPOSITION OF CROWN LANDS

TYPE OF DOCUMENT SYMBOL

PATENT, SURFACE A MINING RIGHTS . . 0

SURFACE RIGHTS ONLY . ^

MINING RIGHTS ONLY ... ... .......... ...,................... Q

LEASE, SURFACE 4 MINING RIGHTS . . . |

SURFACE RIGHTS ONLY ..Q

MINING RIGHTS ONLY .. ..., .. ... fl

LICENCE OF OCCUPATION . .. . . y

CROWN LAND SALE........................................... ...,..,........,,,..C5.

ORDER-IN-COUNCIL . ,. .....,....................................................OC

RESERVATION . . .. .. . . .. .. .... ,. ©

CANCELLED...... ,. . ....... ... .... .... ................,.......,....................,©

SAND A GRAVEL ,... . ............................. ................ ..... ,.,.......©

SCALE : 1 INCH - 40 CHAINSQ 900 1000 EOOO 4000 tOOO

METRESO 200 400 COO MO l KM

ACRES HECTARES

TOWNSHIP

REAUMEDISTRICT

COCHRANEMINING DIVISION

PORCUPINE

Ontario

Ministry of Natural ResourcesSurveys and Mapping Branch

Date OCT. 1975Whitney Block

Queen's Park, Toronto

Plan No.

M. 576

Page 8: Ground geophysical work consisting of horizontal loop

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LEGEND

MEASUREMENT STATIONS A LONS P ICKET LINES

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Page 9: Ground geophysical work consisting of horizontal loop

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WIIIINO DIVISION, ON T

SCALE i: 200

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MAGNETOMETER SURVEY

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42A14NEW18 2.261* REAUME 220

600

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MEASUREMENT STATIONS ALOW PICKET LIHCS

RELATIVE VALUES OF THE VERTICAL COMPONENT

FORCE OF THE EARTH'S MAGNETIC FIELD ('In gemma*)

MAGNETIC CONTOURS

BASE STATION

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Page 10: Ground geophysical work consisting of horizontal loop

P499317P499313

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FOURNIER TWP

REAUME TWP

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MEASUREMENT STATIONS ALONG PICKET LINES

PROFILE IN PHASE COMPONENT (Sea k: (Inch - 201)

PROFILE OUT OF PHASE COMPONENT ( Sco** l foch

COIL S EPARATION: GOO n .O.I OFF SCALE R E AW W O O.C. OUTCROP AREA

CONDUCTOR

INSTRUMENT: MAX MIN nFREQUENCY; 444 H Z .

GRID N o. 2 7

42AMNE0018 2.2610 REAUME 330

Page 11: Ground geophysical work consisting of horizontal loop

. P499317P499313

P4993T5 P499316

FOUR NIER TWP

REAUME TWP

) C A T ' O N SKETCH 1 inch: 40 chains,

WESTERN MINES LTD

REAUME ft HANNA TWPS

PORCUPINE MINING DIVISION, ONT

SCALE l" !20d

by

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VERTICAL LOOP

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ELECTRO MAGNETIC

L EGEND

FREQUENCY; 1000 HZ'. 500OH2

SURVEY

INSTRUMENT : McPHAR R. E. M.

CONDUCTOR AXIS

PROFILE SCALE

SECTION ". GRID No. 27

42A14NEM18 2.2619 REAUME 240

Page 12: Ground geophysical work consisting of horizontal loop

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MAGNETOMETER SURVEY

L E GEN O

MEASUREMENT STATIONS ALONff PICKET LINES

RELATIVE VALUES OF THE VERTICAL COMPONENT FORCE OF THE EftRTH'S MA6NETIC FIELD ('In g o mm at)

MAGNETIC CONTOURS

BASE STATION

GRID No. 2 7

250