conwest exploration company limited group 11 …
TRANSCRIPT
EXPLORATION MANAGEMENT AND SERVICES
42A05NE0112 2 .2095 TURNBULL
(70S) 2 35-4027 OR
010
S35-356B
MAGNETIC AND ELECTROMAGNETIC
SURVEY
CONWEST EXPLORATION COMPANY LIMITED
GROUP 11
TURNBULL TOWNSHIP
PORCUPINE MINING DIVISION, ONTARIO
APR 2 3 19/6
PROJECTS UNIT
TIMMINS, ONTARIO JANUARY 1976
PETER T, GEORGE/ P, ENG,, CONSULTING GEOLOGIST
SUMMARY
Linecutting, magnetometer, and electro
magnetic surveys were completed on the property during
December 1975.i'
The surveys were carried out utilizing;'-a
Geometrics G-816 Proton Magnetometer and an Apex -
Parametrics Maxmin II horizontal loop unit (600 foot
cable, 222hz. and 888hz.). - 1
One significant HEM anomaly was located and
drilling is recommended to test the anomaly.
l
INTRODUCTION
Linecutting, magnetic and electromagnetic surveys
were completed on a block of 6 claims in Turnbull Township,
Porcupine Mining Division, Ontario for Conwest Exploration
Company Limited, 1001-85 Richmond St. West, Toronto, Ontario
by GEOEX Limited during the period December 8 to 22, 1975.
A total of 0.79 miles of baseline and 9.64 miles
of grid were cut on the property.
A total of 1115 magnetometer readings and 816
electromagnetic readings were taken on the property.
PROPERTY, LOCATION AND ACCESS
The property is located in east-central Turnbull
Township, approximately 14 miles west of Timmins, Ontario.
The property is most readily accessible by helicopter from
Timmins. Winter access to the property may be accomplished
by snow vehicle from the Malette Lumber Company winter road
through Bristol, Carscallen and Turnbull Townships.
PROPERTY, DESCRIPTION
The property consists of 6 contiguous, unpatented
mining claims numbered P419586 to P419591. The claims were
recorded March 3, 1975 for Conwest {Miners Lie. A20187).
PROPERTY, TOPOGRAPHY
The property has low relief. The southeast sector
of the property has a ridge of low relief{approx. 25') which
may indicate a buried bedrock ridge in the vicinity of the
diabase dike outlined by the magnetometer survey. Spruce
and poplar occur in the area of the ridge. The remainder
of the property is flat, alder and cedar swamp terrain.
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PREVIOUS WORK
Government
Middleton(1974) geologically mapped Turnbull Township during 1969 and 1970 while completing a ground magnetic survey of the township (Middleton 1971). The only other geological map of Turnbull Township was a compilation published in 1957 (Ferguson and Finley, 1957). No outcrop is reported on the property.
Industry
The property has been held intermittently by a number of mining companies since the early 1960's. The only assessment work on file with the Ontario Department of Mines is as follows:
(1) Nor-Scan Mining and Services Co. Ltd.During March and April 1969, MF-1 fluxgate
magnetometer and Ronka EM-l6 surveys were completed that covered the east part of the present property. A north trending diabase dike was indicated by the magnetometer survey and a number of weak VLF-EM anomalies were indicated, all of which appear to be caused by overburden conditions.
(2) Noranda Exploration Limited.
During February 1972, fluxgate magnetometer and fixed transmitter vertical loop (McPhar SS15, 1000hz. and 5000hz.) surveys were completed over all of the Conwest property. The results of the magnetometer survey are essentially the same as the Nor-Scan survey. One weak VEM anomaly was located that correlates with Anomaly D of the present survey.
-3-
PROPERTY, GEOLOGY
Middleton (1974) shows no outcrop within the
boundaries of the property. According to Middleton 1 s
interpretation, the west part of the property is underlain
by granitic intrusive rocks and the east part by dominantly
felsic volcanic rocks with minor mafic to intermediate
volcanic rocks. Two north trending diabase dikes cut the
volcanic rocks. The volcanic rocks in the area generally
have a northerly strike direction and steep to vertical
dips.
RESULTS OF THE PRESENT SURVEY
GRID
A north-south baseline was established south
from the number one post of claim P419591. An east-west
system of grid lines was established with 300 foot line
spacing (NOTE - the east part of line 39S was turned off
at station 40S in error.).
MAGNETOMETER SURVEY
The magnetometer survey was carried out
utilizing a Geometrics G-816 Proton Magnetometer (See
Appendix l for instrument specs.) capable of measuring
total field values for the earth's magnetic field.
Base stations were established at 100 foot intervals
along the baseline and corrections of the survey data for
diurnal variation was accomplished by periodic check
readings at the base stations. Diurnal variation during
the survey was less than 15 gammas. The Main Base Station
was located at 9S on the baseline and had a value of
59740 gammas.
Readings were taken at 50 foot intervals ' along the grid lines.
The sensor head was at an elevation of approximately 10 feet (3 meters) above the ground.
The results of the magnetometer survey are presented on Map l (in pocket).
Magnetic relief on the property is generally less than 100 gammas ( 59700 to 59800 gammas) with the exception of a pronounced, north trending, linear anomaly with magnetic relief of 1000 gammas (59800 to 60800gammas).
The area west of the baseline is essentially featureless magnetically and is probably underlain by granitic rocks as inferred by Middleton (1974).
East of the baseline, low amplitude magnetic anomalies suggest a north to northwesterly strike trend in the underlying volcanic rocks.
The linear magnetic anomaly near the east property boundary is due to a north trending diabase dyke that outcrops to the north and south of the property.
A 225 gamma magnetic anomaly correlates with the HEM conductor located on line 3.6S. Minimum depth to the magnetic source is approximately 175 feet.
-5-
ELECTROMAGNETIC SURVEY
An electromagnetic survey was completed over
the property utilizing an Apex Parametrics Maxmin II
Horizontal loop system.
The coil separation was 600 feet (183 meters)
and two frequencies (222 hz and 888 hz) were read at
each 100 foot station on the grid.
Appendix l contains operating specifications
for the electromagnetic equipment.
Maps 2 and 3 (in pocket) present the results
of the electromagnetic survey.
Two anomalous zones were outlined by the 888hz
data but only one zone was indicated by the 222hz data.
Anomaly A
Anomaly A was located on lines 27S, 308,
33S, and 36S during the coverage survey. Line 36S
produced the strongest anomaly at both 222hz and 888hz.
In-phase response is weak on line 33S and absent on lines
303 and 27S.
Detailed, multi-frequency surveys (See Appendix 2)
on lines 33S, 36S, and 40S indicate that the anomaly
is very weak on line 33S and absent on line 40S.
Analysis of the data for line 36S indicates
a depth of 180 feet, a width of less than 25 feet, a
response parameter of 20, a conductivity-width of
25 to 35 mhos, and conductivity of 2.5 to 4.5 mho/m
for Anomaly A.
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HEM Anomaly A is probably due to a narrow, pyrrhotite-bearing sulphide zone.
Anomaly B
Anomaly B occurs on lines 3S, 6S, and 9S.
The anomaly is outlined by an 888hz quadrature response.
The anomaly is probably due to conductivity within the overburden.
CONCLUSIONS
Only Anomaly A warrants follow-up by diamond drilling. The conductor is less than 25 feet wide, has a near vertical dip, and is buried under 175 feet of overburden.
RECOMMENDATIONS
One drill hole (450' to 500') is recommended to test Anomaly A. The hole should be spotted at 9+50E, 37+25S with an orientation of 045OX-55O .
Respectfully submitted,
Peter T. Getorge, P. Eng., Consulting Geologist.
-7-
REFERENCES
Ferguson, S. A., and Finley, F. L.,
1957 Turnbull Township, District of Cochrane;
Ontario Dept. of Mines Preliminary Map P2].,
Scale l inch to h mile.
Middleton, R. S.
1971 Turnbull Township, District of Cochrane,
Ground Vertical Field Magnetics; Ontario
Dept. of Mines Preliminary Map P638,
Scale l inch to k mile.
1974 Turnbull Township, District of Cochrane,
Geological Map; Ontario Dept. of Mines
Preliminary Map P966, Scale l inch to k mile.
Ward , S . H
1966 The Electromagnetic Method; Mining Geophysics,
Volume 2, pp. 228 - 368, Society of
Exploration Geophysicists.
-8-
APPENDIX l
INSTRUMENT SPECIFICATIONS
r
-9-
Operating ManualModel G-S16Portable Proton Magnetometer
2. Cycle the magnetometer a few times by depressing the READ button releasing and waiting for a reading each cycle.
3. Observe measurement readings. Each reading should repeat - to 1 gamma. (A slow shift may occur over sever^i minutes due to a diurnal change In the earth's field.)
4. Place the suspected article at the distance from the sensor - expected during actual survey operation, '
5. Cycle magnetometer several times and note the readings.
6. Remove the article and repeat steps 2 and 3 to check for diurnalshifts in the earth's field. If a diurnal shift Is present, repeat
. ' entire test. .'. .'
7. If the readings obtained in step 5 differ by more than 1 gamma ( one count) from those obtained in steps 3 and 6, then the article Is magnetic. ' '
IF THE ARTICLE IS HIGHLY MAGNETIC. OR IF THE SENSOR IS INSIDE OR NEAR A BUILDING OR VEHICLE, THE PROTON PRE-
. CESSION SIGNAL WILL-BE LOST, GIVING COMPLETELY ERRATIC READINGS AND LOSS OF 1 COUNT REPEATABILITY.
The magnetometer should not bc operated In areas that are known as sources of radio freo^iency energy, power line noise (transformers), in buildings or near highly magnetic objects'. The sensor should always be placed on the staff above the ground, or in the "backpack". The sensor will NOT operate properly when placed directly on the ground. . :.
1.3 SPECIFICATIONS
Sensitivity: ..
Range:
. ' - Tuning:
Gradient Tolerance
Sampling Rate:
1 gamma throughout range
20,000 to 90,000 gammas (worldwide)
Multi-position switch with signal ampli- ,tude indicator light on display
Exceeds 150 gammas/ft
Manual push-button, one reading each 6 seconds. ' . . . ; P : y
-10-
l
!
Operating Manual -Model G-81C . . , ' .: :
; Portable Proton Magnetometer
Output: 4 . " , .-.
Power Requirements:
Temperature Range:
Accuracy (Total Field):
Sensor:'. . \ - - : '
5 digit numeric display with readout directly ; In gammas " - ,. .'" - ":--.'-t:: . .V .Twelve self-contained 1. S volt "0" cell, ' universally available flashlight-type-bat teries. Charge state or replacement sig nified by flashing indicator light on display.
Console and sensor: r40 to+85 C -Battery Pack: O0 to +800 C (limited use
. : .' to-15O C; lower-temperar' " ' ture operation optional)
. 1 gamma through O0 .to 600 C temperature range . . . ,- ,.- - r. \ .- : ;-..-- ..; •.'•:-High .signal, noise cancelling, interchangeably -.mountedon separate staff or attached to back pack . . . ' ;"- -'-. - - ^; ' y'-: ,': ; -
Console: S. 5 x 7 x 10.6 inches (9 x 18 x 27 cm) Sensor: 4.6 x 6 inches (11x15 cm) ' Staff: - -l inch diameter x 8 ft. length (3 cm x.V-;.;.;''-'; 2.44cm) ' .:/.,-.'.'. :'. ,. . : -.^:*;.
Size:
"Weight: ". v .' ; ' ',:.:."
.J.-. . i.'4 .KA'ENTORy INSPECTION' 'J..; :":....,./,..-,' ' •:.;\.",-:-.. i ::'^-:. -:^i. : ^'-i -,.) *.-When received from'the manufacturer, the 0-816 magnetometer should V--../ '.'include the following items; . .' '- ;/..,-., ; .-..; ;,... : ,- j;-^i ,v;'-.W^X\
. - . .... Console (w/batteries): " 5.5 2.5 Sensor and signal cable: . . 4 . : 1.8". Aluminum staff ... ,.'. 2 ^ 0 .9 :
;. y .l^'- ' G-8I6 magnetometer console . ' '."2.; Sensor - ...', - : -. ..••^•^••'. ^ 3.-."'. Collapsible sensor staff '' ; /':;.; 4. -j Signal cable-staff (long) .. :..'. .",.. .;-' 5. Signal cable-backpack (short) ,.; .6/j Adjustable carrying harness ,^. ,
i : l each .t .1 each
.; - l each Y; ; l each '.\.'.. l each ',- ,\1 each
(7-
.?\\ i-c, '././•^Au-^n FI
. r-*** i;-*:/:!s ..ffi;*, ei w/ ii
r- r-f^-^^-^-M'^.1.^'-^y**;-flc^wr*;'^:*—•^r; "^;--*f"--w*w^^^l"vrT^g
;;,iA*ii^liV.1^"ii5iii'!.;1fiiiri)i'''ii.i -St^^-^A^i^^t-^i&^iS .
a Automatic In-Phase and Gluadrature meter readouts.
L] IVJaximum and minimum coupled modes of operation,
d Four frequencies: S22Hz, 4^-^-Hz, BBBHz and T777Hz.
G Six coil separations: lOQj 2OO, SDO.^OO, SOC3 and BOOft.
n Voice communication link via the reference cable.
l\m'-'f" 'l' \^-- __- ^' i '
II YSa^l-i SP
OPEDERATING FREQUENCIES:
COIL SEPARATIONS:
MODES OF OPERATION:
PARAMETERS MEASURED:
READOUTS:
SCALE RANGES:
READING REPEATABILITY:
RX BANDWIDTH (-3dB):
KX'INTERNAL NOISE:
TX DIPOLE MOMENTS:
RX POWER SUPPLY:
TX POWER SUPPLY:
REFERENCE CABLE:
WEIGHT OF RX UNIT:
WEIGHT OF TX UNIT:
OTHER MAIN FEATURES:
222, 444, 883 and 1777HZ
100, 200, 300, 400, 600 and 800 feet
(a) Tx coil plane and Rx coil plane horizontal {Horizontal loop mode).(b) Tx coil plane horizontal andRx coil plane vertical (Minimum coupledmode).
In-Phase and Quadrature component of the secondary field..
Automatic, direct readout on 3V size meters.
In-Phase: 201 normal, ilOO'fc by switch. Quadrature: 20% normal, 100% by switch. Inclinometers: 501 tilt.
±h* to tl.%
0.2 Hz nominal -
Negligible
150 Atm2 @ 222 Hz, 150 Atm2 @444 Hz, 75 Atm2~.@~888 -Hz,-.50 Atm2 Q..1777 Hz.
Four 9V batteries (transistor radio type)
Three 6 V alkaline lantern batteries in a separate battery pack. Optionally one 12V 8Ah. rechargeable Gel Cell.
Light weight, low friction unshielded cable. Unit supplied with 200, 400 and . 600 ft cables, other lengths optional.
13 Ibs.
30 Ibs.
Built-in Intercom system for communication between receiver and transmitter unit. Signal and reference warning lights to indicate erraneous readings.
FOR MORE INFORMATION,
PHONE C416) 431-6388 OR WRITE TO;
255 YQRKLAND BLVD., WILLOWDALE, ONTARIO, CANADA M2J 1S3
-13-
APPENDIX 2
DETAILED HEM DATA
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1777hz.
888hz.
.i4,————4
.1777hz
,888hz
444 hz
222 hz
'-4-
,--H™—-J———-l———-*-——H——— +
2 E 4E 6E 8EConductor
14 E 16 E 18 E
DETAILED HEM LINE 36 SApex Maxmin I HEM 400'Cable
Scale 1*^200'
.444 hz
.222hz
PN.
——.1777hz
^___-4———t-—__j. --.-——H————-H————4-———— -h ————^—————^——; mfr- ————^————f.™^..^——..4.——.-r*——"" ,, ...l..,, ,i , ,.,; . — 4————4————-+RRRK7
I—+——"__l___—•*-—:—|—'——•'————*___.4.. ..4. ^44 hz
I3S' - - v: --^ : - .. .
rn" . __—222hz
^J' ' •••" ' - ;- - '. '
4E 6E 8E 10 E 12 E 14 E 18 E 20 E
DETAILED HEM LINE 40 SApex Maxmin H HEM
Scale . f !|200' r-20%
;^r, **?^fc"-.
-^——————4,—————h————
222 hz -—— 4-
1 E 4E 6E SE
,..- ,..4t.
16 E2 E 14 E
DETAILED HEIV1 LINE 36SApex "Maxmin-IT HEM 200'jCabIe
Scale f*200' r*200Xo
.\777\n
.888hz
.222hz
18E .
12A05NE0112 2 .2095 TURNBULL 900Ontario
. ! \, j M*;, -; "Ii : "' : k' f 4:^;^-, V'S:
TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORTFACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT
TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.
Type of Survcy{s) Township or Area Claim Hnlder(s)
Magnetic and Electromagnetic Turnbull Township ________Conwest Exploration Co. Ltd.
Survey
1001-85 Richmond St. W. ,Tornto. GEOEX Limited, Timmins, Ontario.
Author of Report _ P.T.George, P.Eng.Address of Author P.O.Box 70, Tinunins, OntarioCovering Dates of Survey Dec. 18yIg75l-97Jan. l , 1 976
{linecutting to office)
Total Miles of Line Cut 10.43
SPECIAL PROVISIONS CREDITS REQUESTED
ENTER 40 days (includes line cutting) for first survey.ENTER 20 days for each additional survey using same grid.
Geophysical—Electromagnetic.—Magnetometer_.—Radiometric———Other______
DAYS per claim
Geological.
AIRBORNE CREDITS (Special provision credits do not apply to airborne surveys)
Magnetometer. .Electromagnetic.(enter days per claim)
DATF.-Jan. 8, 1976 SIGNATURE:
ia
Res. Geol.. .Qualifications.
V(03. 23 f G
Previous Surveys File No. Type Date Claim Holder
MINING CLAIMS TRAVERSEDV
P419586
P419587
(prefix) - n*""" 1(number)
P.4195?9.
~ l ^
\ "l cWy/o
l
GEOPHYSICAL TECHNICAL DATA
GROUND SURVEYS -- If more than one survey, specify data for each type of survey
Number of Stations Mag, 11 15, HEM 4 0ft
Station interval Mag. 5 Q'.f HEM 100!_____ Profile srale HEM r'
.Number of Readings Mag. 11 l 5 r HEM•jont HEM 816 .Line sparing 300 .———-I..———.———
Contour interval Mag. 25 gammas below 59800, 100 gammas above 59800 gammas
o
O
Instrument Geometrics G-816, Proton Magnetometer——————Accuracy — Scale constant j; l gamma—-—^—-————.^^—-..^.^-—---———-———Diurnal correction method Base stations established on baselineBase Station check-in interval (Hours) 0.5 to 1 .0 hrs.—————.———...—.Base Station location and value Main Base Station, 0+00. 9S. 59740 gammas
.ECTROMAGNETICInstrument . Apex P^ram^t-T'i ^^ Mayrii n IICoil ronfigiiratinn Horizontal LOOp
Coil separation gQQ feet
Arrnrary + l %
Method: d Fixed transmitter D Shoot back Frpmipiif-Y 322h!7.. and R 8 8hz.
2Q In line D Parallel line
WParameters measured.
(specify V.L.F. station)
and uadrature
O
Instrument ——
Scale constant.
Corrections made.
Base station value and location,
Elevation accuracy.
Instrument ^,——.^—^ Method |~~1 Time Domain
INDUCED POLARIZATICParameters — On time
i* Off time
> — Delay timei— i J H W — Integration time
W PowerPH
Electrode array .Electrode spacing
Tvne of electrode
Frequency
Range
Robb TP (M.309)
- Mt. Rutledgt ' *— /. . V"
392382 |3S\2339L --—
P;
4l959r"r"4T9586 94462 '94197 , 94196 'J ^94195 j 94194
, P 'P
42397B j '423*77 l
(444^44J444442 J
J ^ ' 4IOZ45 i 410242T "t~P~~~Tp~" ~
410263 1410260 | \,— —— — i-* — — — \Ip |R l V
410256 4 10255 410239 — f- ——-i — — — —l— — — — Pi IP , P
1410257 .410254 , [410241
Carscallen Tp (M.267)2.2895 TURMBULL 200
00Cd
CL
(Dk-
•4--oOO
K.Koianvv
THE TOWNSHIP OF
TURNBULLDISTRICT OF COCHRANE
PORCUPINEMINING DIVISION
SCALE: 1-INCH-4O CHAINS
LEGEND
PATENTED LAND •or© CROWN LAND SALE C.S.LEASES ©LOCATED LAND Loc-LICENSE OF OCCUPATION LO.MINING RIGHTS ONLY M.R.O.SURFACE RIGHTS ONLY S R.O.ROADSIMPROVED ROADSKING'S HIGHWAYSRAILWAYSPOWER LINESMARSH OR MUSKEGMINESCANCELLED C.
PATENTED FOR SURFACE RIGHTS ONLY
NOTES400* Surface Rights Reservation along the shores of all 'lakes 8 rivers
This township lies within the Municipality Of CITY of TIMMINS.
DATE OF, ISSUE
APR 281976
SURVEYS AND MAPPING
PLAN NO M-3I6
ONTARIO
MINISTRY OF NATURAL RESOURCESSURVEYS AND MMrr^'C B P *NCH
a A a il
Legend
Measurement stations along picket lines
Total magnetic field (in gammas)
Main base station
CONTOUR INTERVAL; 100 gamma* abovt 59,800
25 gamma* below 59.800
MAP lMAGNETOMETER
SURVEY
5———t———S——————5 tf ffi S Ji u" -J -j ^, ffi -J
GROUP 11
TURNBULL TOWNSHIP
TIMMINS AREA, ONTARIO
NTS 42 A5, 12
CONWEST EXPLORATI C O. LTD
S P. T. G5ORG
GEOEX LIMITED O. B9K 7O.
IMMIN S, ON 1A R IOEXPLORATI ON MANAGEMENT A ND SERVICES
42A05NE0112 2.2095 TURNBULL 210
K—— __-i ~ "i- - -
Legend
PROFILE SCALE: l i nch to
INSTRUMENT: APEX Poromatrie* MAKMIN2
600' cobl*
MAP S HEM SURVEY
BBS Hz
GROUP 11
TURNBULL TOWNSHIP
TIMMINS AREA. ONTARIO
NTS 42 A5, 12
CONWEST EXPLORATION C O. LTDS CA L E - l INCH
GEOEX LIMITEtXPLORATION MANAGEMENT AND SERVICES
P C i. Bti'X 7O,
TIMMIN S, ON TAR lO
(7O51 267-3990
42A05NE0112 2.2095 TURNBULL
Legend
See Map 2
MAP 3M SURVEY-..x---
GROUP 11
TURNBULL TOWNSHIP
TIMMINS AREA. ONTARIO
CONWEST EXPLORATION
GEOEX LIMITED
42A05NE0112 2.2395 TURNBULL 230