520e8NE0091 S2008NE0022A1 DONA LAKE

RECEIVED

JAN 281972PROJECTS SECTION

010

Report on

MAGNETOMETER SURVEY onPart of Group 4

for

JAMES BAY MINING CORP. (N.P.L.)

Pickle Lake Project

Toronto,Ontario January 2?, 1972

Robert L. V. Ekstrom B.A.Sc,, P. Eng.

5aO*8NE8091 520eBNE0eaaAI DONA LAKE

TABLE OF CONTENTS

INTRODUCTION

PROPERTY, LOCATION tt ACCESS

LINECUTTING

GEOLOGICAL RECONNAISSANCE

REGIONAL ft LOCAL GEOLOGY

MAGNETOMETER SURVEY .

Method Results

CONCLUSIONS

BIBLIOGRAPHY

CERTIFICATE

GROUP LOCATION MAP

CLAIM LOCATION MAP

MAGNETOMETER SURVEY PLAN * -Sheet l

010C

J

INTRODUCTION

On September 22, 1971, James Bay Mining Corp. (X.P.L.) (Sultt 250,

620 St. James Street West, Montreal 101, F* Q.) requested Canadian Oresearoh

Ine* (Suite 10, 85 King Street, East, Toronto, Ontario) to carry out lino

cutting, geophysical survey* and reconnaissance geology and prospecting

on their elains in the Fickle Lake Area, Patricia Mining Division,

Borthvestern Ontario*

Work in the area began on fofrQ, frf r flltf *** crews were removed for

the holiday -break on December 22nd*

PROPERTY. LOCATION, AND ACCESS

claims recorded in the name of Janes Bay Mining

Corp. (.N.P.L.) designated as Group 4* are located on claim sap M-2228,

approximately one idle south-east of Central Patricia, Ontario in the

Patricia Mining division. A location nap is included in the report* The

group lies approximately 210 miles WO0* of Thunder Bay,

The claim numbers are as follows i

Pa-286007 to 286016 incl. Pa-289544 to 289550 incl. Pa-289563 to 289565 incl. Pa-286155 to 286164 incl.

10 claims 7 claims 3 claims10 claims

Total 30 claims

Highway 599 from Savant Lake on the CD railway to Central

Patricia passes along the west side of the property and cuts through the

south-west and north-west corners of the property* Access is by road

vehicle and campsites exist along the highway adjacent to the claim group*The current survey covers only the southeastern

the group.

^

-2-

MHECUTTIMQ

i picket Une grid wu established with the base

commencing at the number four post of claim Pa-286011 and traversing-- - . -w.the property on a bearing of SA^K, A grid of lin** wa* out at 400*

interral* along the baseline and at right angles to it, Uneeutting

commenced on peVfrer -^\\ *j* was ecnpleted on Itevember 3rd. 1971

OKOLOGICAL RECONNAISSANCE

Reconnaissance geology and prospecting was carried out b/ the

author and three assistants at various times from October 22 to November

17, 1971* Bock types and mineralisation were noted and soae rock

trenching was done on a sulphide showing, AU of the picket lines and

much of the chaining was not completed at the time of the survey and it

was necessary to use claim lines and pacing for control in much of the

work.

RBBIONAL AND LOCAL GSQLOGY

The area is underlain by Keewatin volcanic rocks and sediments,

post Keewatin granit^ acid porphyry, aplite, rhyolite and felsite,

(possibly Algoman) and Keweenawan diabase and lamprophyre*

The oldest rocks, the Keewatin, are generally basic flows

(andesite to basalt) which have been altered and sheared* Interbedded are

iron formation, quartcite, greywacke and argillite. Minor bands of

rhyolite have been observed.

The rocks have been regionally folded and intruded by granite

which in the Pickle Lake area create a ring of volcanics with granite in

-3-

the centre with branching off-shoot* of volcanics extending to tht north

east and south-west. Much of this structure AM been interpreted fro*

the airbourne Magnetic nape*

Two gold nines (Central Patricia and Pickle Crow) were past

producers in the area. The gold bearing structures were composed of

quarts veins with heavy sulphide mineralization injected into tension

fracture cones in iron formation in the forner case and in quarts-

carbonate veins in later fractures in the latter* Details of the gold

vines can be found in Ontario Department of Mines fieports Vol. ZLU,

Part VI*1), and Vol. XLVU, Part Hl(2\

Chalcopyrite has been seen associated with the gold mineralisation

\Jt\J 4Q4 aorf recently, copper mineralization has been found by Uaex

associated with nickel along the north side of the volcanic "ring".

Group 4 has been found to be underlain by Keewatin flows and

fragmental sediments with some iron formation and granitic and lamprophyre

intrusives. Sulphides were observed in both volcanic and sedimentary

rocks. In general the volcanics occupy the south-western portion of the

property with granite and related rocks to the north-east with included

remnants of the volcanics. The rocks strike JM-SJS but minor dragfolds

and local changes in strike are coouaon. The rocks dip to the north-east.

MAGNETOMETER SURVEY

Method

The magnetometer survey was carried out using a McPhap M-700 Flux ^ate magnetometer. This unit has five; scale ranges from 1000 to

160,000 gammas, with a scale constant of 20 gammas per scale division

in the 1000 gamma range. Readings were taken at picketed stations at 100

foot intervals on the grid lines, with 50-foot readings where the magnetic gradient was found to be steep.

Results . ;

Magnetic anomalies were found at the ftoron end of Lines 56 to 76S, the west end of Lines 52 to 68S, and along Lines 52 and 56S.

The eastern anomaly is probably caused by a weak magnetite iron formation. The electromagnetic survey did not locate any conductors in this area.

The western anomalies are in the area in which tne E.M. survey located several conductors. The conductor axes do not fci coincide with the magnetic highs and it is suspected that the stronger magnetic anomalies are on weak magnetite iron formation and that the E.M. anomalies

are on related sulphide zones.

The anomalies along Lines 52 and 56S may be caused by small remnants of iron formation in the granites. Better interpretation will be

possible when the survey is completed to the north (grid).

The minus 1050 gamma reading observed at 2000W, L6US, is probably caused oy some piece of acrap ateel left on the property at some

earlier date and is of no interest.

CONCLUSIONS

The remainder of Group 4 should be surveyed with the

magnetometer in order to check the magnetics associated with E.M. anomaly

A-l and complete the checking on A-2. It is felt that a complete survey

will also be a valuable aid in interpreting the local rock structure.*

Respectfully submitted,

Robert L. V. Ekstrom, B.A.Se., P. Eng.

BIBLIOORA

W. S, Dyer, Otology of the Pashkokogan-Misehkow Area, Ontario Dept*of Mines, Annual Report Vol. XIII, Part VI, 1933, Pages 1-20j

:-*rf*

•0*1*0'•0*1 It

•v CANADIAN ORESEARCH INC.

JAMES BAY MINING CORP.

GROUP LOCATION MAPkapkichiLakeArea, Pickle Lake. ONT.^^ ^^cole l 1250,000 ^^^

Jo*. 1972TORONTO

File.

58008NE0e91 DONA LAKE S00

j TO BF. ATTACHED AS AN APPENDIX TO TECHNICAL REPORT JA W *i 0 IS/JJ 1 FACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT pRft j TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC. SECTlSsi3

Typp nf Survpy. , ff A 9 j

Township or Arca ^IcuCL/LCJri;.im hn]rlpr(s), \Sc±r~7f^*^

A(|trinr of Rppnft. jF\60 t*

ArlHrps*:, f y^O/X^X SsCovering Dates of Survey ™

T^tal Mil^s "f l-in** *~"t /-^f'

SPECIAL PROVISIONS CREDITS REQUESTED

ENTER 40 days (includes line cutting) for first survey.

ENTER 20 days for each additional survey using same grid.

ri^&^^e*f/ -y-* 0 "X. f S f /)

jr f f

^ X ' M fi? JC-S^-4~^

c*r ~70t~6*i* ̂SrTr: /7 @to^t t s 2^— /*J * t- /-0 7 f

(linecutling to office) S S ^JL A 'J ^ 41 ) f ft **p VT O r t df b-miJfO jf J

DAYS,, . . , per claim Geophysical

-Elcctromagnetic ^-ess^ Magnptomptrrjr^ V^V .

-Rnrljnrrlrtrjr. L^ Vs^

-Hfh^r '

flpnlngiral

n^nrKprpiral,, , ,, , ,

AIRBORNE CREDITS (Special provision credits do not apply to airborne surveys)

Ma'irVt"m*'H*r\ . El(Vtr""Vpnptic , Rnrljr.rnptrir(enter days per claim)

OATH: ^ 7///'^- f

; PROJECTS SECTION

!Rf;. Gwil.f ft i Prrvions Survpys eS\ ^J-J

j y Checked byC idD GEOLOGICAL BRANCH

;** Approved by

' GEOLOGICAL BRANCHj

:i r. N ATI IR v-^^^y^--^,^^Author of Report

Qualifirations ^ ' \^ '

.-late

dal i*

Approved hy dat'

MINING CLAIMS TRAVERSED Liit numerically

(prefix) (number)

^ ,/y x y....^..^......^OT.^^.Vv^f.;..............

^

TOTAL CLAIMS ^ V , .

GEOPHYSICAL TECHNICAL DATA

GROUND SURVEYS Number of Stations Station interval -———Line spacing ,————-—-—.——— Profile scale or Contour intervals ,

Number of Readings.

MAGNETIC Instrument_Accuracy - Scale constant Diurnal correction Base station location

(•pecify for each type of survey)

G .i/-l ^ t-t t~Yt U i *tC, M /'•l S f* d G jj *- *^ *^ C

-..w,va 5

ELECTROMAGNETICInstrumentCoil configuration. Coil separation ——. Accuracy———— Method: O Fixed transmitter O Shoot back CD In line O Parallel lineFrequency

(ipecify V.L.F. lUtion)Parameters measuredGRAVITY

InstrumentScale constant.Corrections made.

Base station value and location.

Elevation accuracy.—.——--.—.——————. INDUCED PQ1.AR1ZAT1ON - RESISTIVITY

Instrument^^.,—..—^^—^—^———^-Time domainFrequencyPower

Frequency domain. Range ̂ -—— -——--

Electrode array.—. Electrode spacing. Type of electrode.

Canadian Ore s ear eh Inc.SUITE 10 . 85 KINO STREET EAST

TORONTO 210. ONTARIO

TELEPHONE: 363-3590

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