rpt on grid k mag & em sur€¦ · w. g. wan l limited consultants: geology - geophysics 350...

15
2.3575 W ILKIE 010 REPORT O N mv 7,41980 MINING LANaS SECTION GRID K MAGNETOMETER AND ELECTROMAGNETIC SURVEYS WILKIE TOWNSHIP DISTRICT OF COCHRANE LARDER LAKE MINING DIVISION ONTARIO i t November 2 1, 1 980 W. G. Wahl Limited

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Page 1: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

2.3575 W ILKIE010

REPORT

O N

mv 7,41980

MINING LANaS SECTION

GRID K

MAGNETOMETER AND ELECTROMAGNETIC SURVEYS

WILKIE TOWNSHIP

DISTRICT OF COCHRANE

LARDER LAKE MINING DIVISION

ONTARIO

i t

November 2 1, 1980 W. G. Wahl Limited

Page 2: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

W. G. WAN L LIMITEDCONSULTANTS: GEOLOGY - GEOPHYSICS 350 BAY ST. . 10TK FLR. - TORONTO. CANADA M5H 286

TEL, (416) 363-8761 - CABLE: WAHLCO - TORONTO

November 21, 1980

Mr. J. A. Harquail President Surveymin Limited 330 Bay Street Suite 1107 Toronto, Ontario M5H 2S8

Dear Mr. Harquail:

Submitted herewith is our report entitled:

GRID K

MAGNETOMETER AND ELECTROMAGNETIC SURVEYSWILKIE TOWNSHIP

DISTRICT OF COCHRANE LARDER LAKE MINING DIVISION

ONTARIO

The ground geophysical surveys extended and further defined the regional geology as mapped by the Ontario Division of Mines.

A northwesterly trending fault zone was mapped in the western portion of the survey area, the relative position and sense of which adds supportive evidence to the right-hand displace ment indicated along the Black River Fault zone mapped on Grid J, located in Walker Township.

The magnetometer survey also identified two diabase dikes and a large metamorphosed mafic intrusive body mapped along the southern property boundary. It is felt that this intrusive body either lies along the northern contact of or is synonymous with the Pipestone Fault zone.

The electromagnetic survey mapped a near surface bedrock conductor, C-l, located in the southeast corner of the survey area exhibiting a conductivity thickness of 10 mhos. This conductor is believed to be the mappable expression of a finely disseminated

* * * * f t*

Page 3: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

- 2 -

sulfide band associated with a tuffaceous horizon lying within the metavolcanics.

In light of the proven structural significance of the Pipestone Fault System as a known channel way for gold bearing mineralizing solutions, it is strongly recommended that the structural relationship between the metamorphosed mafic intrusive body and the Pipestone Fault zone be determined. It is also recommended that additional ground geophysics be carried out in the vicinity of Conductor C-l. This additional work would consist of several selected I.P. profiles carred out across the inferred axis of Conductor C-l.

Page 4: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

GENERAL

The following geophysical report details the results

of the ground magnetometer and electromagnetic surveys under

taken by W. G. Wahl Limited on behalf of Surveymin Limited.

The property is situated in the southwest corner of

Wilkie Township, District of Cochrane, and is accessible by a

four-wheel drive vehicle east from the village of Monteith on

concession road II, then south along Lot road 5 to the first

concession road, then east to the Black River, a total distance

of 10.3 km. From this point the property is accessible by

canoe, l km down the Black River and then east upstream l km

on the Shallow River.

The Wilkie Township property consists of the following

sixteen unpatented mining claims, all of which are duly recorded

with Mr. G. J. Koleszar, Mining Recorder, Larder Lake Mining

Division:

L. 521391 - N.W.^, N*s, Lot 12, Cone. I, Wilkie Township.

L. 521392 - N.E.SS, ", " l l

L. 521377 - S.W.J*, ", " " " " "i t

L. 521378 - S.E.?s, ", " ", " ",

L. 521379 - N.W.J*, ", " 11, " ",

L. 521380 - N.E.J*, ", " ", " ",n n

H n tti i

L. 521381 - S.W.Jj, ", "

L. 521382 - S.E.V, " , "

L. 521383 - N.W.%, ", " 10,

L. 521384 - N.E.%, ", " ",

L. 521385 - S.W.%, ", " " " " " "

ii H

H n

L. 521386 - S.E.3*, ", " " " " " "

i iII M

i t

Page 5: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

PROPERTY LOCATION

WILKIE TOWNSHIP

DISTRICT OF COCHRANE

Page 6: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

CM

Page 7: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

L. 521387 - N.W.Js, N*s, Lot 9, Cone. I, Wilkie Township.

L. 521388 - N.E.J*, ", " ", " ", " "

L. 521389 - S .W.%, " , " ", " ", "

L. 521390 - S . E. h, " , " ", " ",

LINE CUTTING

The linecutting was conducted under the direct super

vision of Mr. S. Wabananik of Timmins, Ontario, during the

period from March 9, 1980 to April l, 1980. The sarvey grid

consisted of 3.2 kilometres of baseline trending E-W and 25.74

kilometres of grid line trending N-S, established at one hundred

metre intervals along the entire baseline. Thirty metre

stations were established on all lines.

The thirty metre station interval was apparently

established by the line cutting crews using an imperial chain

oh the grid lines with the assumption that 100 feet was equal

to 30 metres.

MAGNETOMETER SURVEY

The magnetometer survey was carried out by R. Harwood

of W. G. Wahl Limited during the period from September 8 to

September 14, 1980, employing a Scintrex MP-2 total field

proton precession magnetometer in conjunction with a Scintrex

MBS-2 total field magnetic base station attached to a Simpson

M2750 strip chart recorder.

The magnetic data was observed at a 15 metre station

interval on all lines of the established grid. The data was

Page 8: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

corrected for diurnal fluctuations, reduced to a local datum

and presented as a contoured interpretation of these data.

MAXMIN II HORIZONTAL LOOP ELECTROMAGNETIC SURVEY

The horizontal loop electromagnetic survey was carried

out by J. Palladini of W. G. Wahl Limited during the period

from September 8 to September 14, 1980, employing an Apex Para-

metrics MaxMin II horizontal loop survey unit in the maximum

coupled mode. The inphase and quadrature response parameters

were recorded at 444 Hz and 1777 Hz utilizing a 600 foot coil

separation and a 30 metre station interval. These data are

presented in profile form.

VLF ELECTROMAGNETIC SURVEY

The VLF electromagnetic survey was conducted by R.

Harwood of W. G. Wahl Limited during the period from September

8 to September 14, 1980, employing a Crone Radem VLF EM survey

unit. This unit measured the inclination or dip angle and the

total field strength. The VLF station used was Cutler, Maine,

having a frequency of 17.8 KHz. All observations were taken

facing east at 30 metre stations on the lines of the grid

which were interrupted by open water.

DISCUSSION

The magnetometer survey extended and further defined

the regional geology as mapped by the Ontario Division of Mines

Page 9: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

and presented on Map No. 2205.

A major lenticular magnetic expression of up to

2,OOOnT was mapped transecting the survey area trending north

easterly from a point 700 metres south of the baseline on line

HW to the baseline on line 8E at which point the magnetic

anomaly appears to be open to the northeast. This anomaly is

thought to be the mappable expression of a late precambrian

diabase dike, the western-most end of which has been faulted

and structurally offset by a northwesterly trending fault zone.

Movement along this fault zone appears to be a right-hand

displacement and is up to 200 metres.

A younger, early precambrian, diabase dike was also

mapped trending N-S, lying parallel to and coincident with

line 14E. This lenticular magnetic expression is characterized

by a total magnetic field intensity of up to 793nT.

The large regional magnetic feature of up to

16,OOOnT, located in the southeastern portion of the survey

area, is thought to be the mappable expression of a metamor

phosed mafic intrusive body.

The MaxMin II horizontal loop survey identified two

anomalous conductive zones lying within the survey area, both

of which will be discussed in the following section of the

report.

Conductor C-l;

Conductor C-l is located in the southeast corner of

the survey area and is characterized on lines 9E through 12E

Page 10: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

inclusive, lying roughly parallel to and 600 metres south of

the baseline. This anomaly is interpreted to be a vertical,

near surface ( <']-5 metres) conductor, up to 4 metres wide,

exhibiting a conductivity thickness of 10 mhos at the low

frequency (444 Hz) response.

Conductor C-2;

Conductor C-2 is located in the west central portion

of the survey area and is characterized on lines 3 and 4W

inclusive, lying roughly parallel to and 480 metres south of

the baseline. This anomaly is interpreted to be a very poor

conductor and is thought to be an overburden response related

to the beaver pond.

CONCLUSIONS

The apparent right-hand displacement interpreted

along the northwesterly trending fault zone mapped in the

western portion of the survey area adds supportive evidence to

the right-hand displacement indicated along the Black River

Fault zone mapped on Grid J, located in Walker Township.

The metamorphosed mafic intrusive body mapped in the

southeastern portion of the survey area is thought to be either

associated with or lying immediately north of the Pipestone

Fault.

The causative body of conductor C-l is thought to

be a finely disseminated sulfide band associated with a tuff

Page 11: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

horizon lying within the mafic metavolcanics.

RECOMMENDATIONS

In light of the proven structural significance of

the Pipestone Fault System as a known channel way for gold

bearing mineralizing solutions, it is strongly recommended that

the structural relationship between the metamorphosed mafic

intrusive body and the Pipestone Fault zone be determined. It

is also recommended that additional ground geophysics be

carried out in the vicinity of Conductor C-l. This additional

work would consist of several selected I.P. profiles carried

out across the inferred axis of Conductor C-l.

All of which is respectfully submitted.

Sincerely yours/

W. G. WAHL LIMITED

~ D . G . WAKL k

D. G. Wahl, P.Eng. Consulting Engineer

DGW/pl

Page 12: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

Ministry of Natu

OFFICE USE ONLY

ft VV,^ Ontaric

Type of Survey(s Township or Are Claim Holder(s)

Survey Company Author of Repor Address of Authc Covering Dates o

Total Miles of Lir

f GEOPHYSICAL -GEOLOGI ll||||||il||||||||||||||||||||||||i|| j TECHNICAL DAT/ 42AieNEeeis 2.3575 WILKIE

TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORT FACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT

TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

) i p Z? /^/t/tSif/fs?^

3 ^X/X-y^V^S' ~~?S5 t^JsL/Sst/ SS&

J} /j si1//^^/ st*fs /t/ ^/sy?;77^S)

//{y x ' -33 o c5s9 t/ ^7""- . /4osftiAj7Sb

hJ- 6,. {^S?#S- ^s^,r-^A

\ 22 -.A. i^/qs-u, /-^ / sia .

f pf Survey / /f^fei^ # /*?j{0 ^ /Vrt^Ssxjbsf '//p,

(linecufting to office) ^

ie Cut *20. ^-^ ^s??

SPECIAL PROVISIONS DAYS CREDITS REQUESTED n.^i..M^i P" d*""

ENTER 40 day line cutting) fo survey.ENTER 20 day additional survi same grid.

-Electromagnetic — 2 —— s (includes ^v rr- . — Magnetometer _ , 2

\ ir s t t^-Radiometric.,

s for each —Other —————————————:y using (~lpn]ngjoal .

r..^,m'^

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

Magnetometer F.Wtrnmacmerir RaHinmpfrir

'i

Res. Geol.Previous Surveys

s (enter days per claim)

.y ^ AjjW^oCRepbrTor Agent "^

Qualifirations W ^illt&l

File No. Type Date Claim Holder\

/^

linn900

MINING CLAIMS TRAVERSED List numerically

S '/2 Jj/Jf/ '^

T* /J

^ ^

" ^ ^

(number)v^^/^^2 "

^'37?'j-t/377 ^

^ '/-l J-S/S^ ^

.Z, ^ ^/^/y ^y '1 \ sL /^ ^-ZS'f&Z, ^

^ !L\ J-2/S& s, J

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•x-^ X ^? f?"^ (XO X /*3 p f "

^

^/^.ASO*/^./^

TOTAL CLAIMS /^

If space insufficient, attach list

837 IB/79)

Page 13: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

GEOPHYSICAL TECHNICAL DATA

GROUND SURVEYS — If more than one survey, specify data for each type of survey

M(Ui v

Number of StationsStation interval MAC, - /S m j j.

of Readings0iti ' 3o t, - \flF-So'* Line spacing

Profile scale. A- M ifJ

Contour interval.

u

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Instrument

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Base Station check-in interval (hours).

Base Station location and value _ s s?

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InstrumentCoil configuration

Coil separation —

Accuracy —————

Method:

Frequency.

^6

d Fixed transmitter ////t/ -

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Parameters measured

Instrument,Scale constant

Corrections made.

O Base station value and location.

a 7

D Parallel line

Elevation accuracy.

Instrument

INDUCED POLARIZATION

Method D Time DomainParameters — On time

^ Off time

tj — Delay timeN-* ^ — Integration time*H pq Pnwer ..06.

Electrode arrayElectrode spacing ,

Tvne of electrode .

D Frequency Domain FrequencyRange

Page 14: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

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Page 15: RPT ON GRID K MAG & EM SUR€¦ · w. g. wan l limited consultants: geology - geophysics 350 bay st. 10tk flr. - toronto. canada m5h 286 tel, (416) 363-8761 - cable: wahlco - toronto

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