.^^^^^^^^^^•'^:.r-. - •' '^m^^M^M^'^ ; - -

- ' -V - '-^••''

•\

ffeVV" ; s' "•,- -, - -'•-S- *-, f.: . ' l ',

l? ' '

ftS'::'

••'^

W'.''-''•m^:/

'^•^'-•"" ':. ''

REPORT ON AN AIRBORNE GEOPHYSICAL SURVEY ELLIOT LAKE (MACE LAKE) AREA, ONTARIO, CANADA

ATLANTIC RICHFIELD CANADA LTD.

INTRODUCTION;

Between October 28 and October 30, 1969,. an airborne geophysical

survey was conducted in the Elliot Lake (Mace Lake) Area, Ontario, by

Atlantic Richfield Canada Ltd.

Of the 700 miles flown, 50 miles cover the actual claim blocks in

this report. Tho claims covered by this survey are located in Township 162

District of Alagoma, Sault Ste. Marie Mining Division, Ontario, Canada.

The port! of the airborne survey covered by this report was

conducted for the purpose of mapping the local magnetic and the very low

frequency (VLF) anomalies. Tho VLF receiver used was supplied by

McPhar Geophysics Limited, Don Mills, Ontario and Is outlined in

Appendix A. The Magnetometer used was supplied by EG&G, International,

Boulder, Colorado, and is outlined in Appendix A. Tho aircraft used to

conduct the survey was a Turbo-Beaver owned and operated by Atlantic

Richfield Canada Ltd.

The airborne geophysical survey linos were flown in a north-south

and east-west direction with a line spacing no greater than one quarter

of a mile. The navigation and flight path recovery were accomplished

through the use of doppler radar navigation instruments. This equipment

is outlined in Appendix A. The survey was flown at an altitude of 400 feet

G O

specd for 100 miles per hour.

* ASSESSMENT W ORK RESIDE^ b

SSM-1552

J.

-2-

Data Reduction

1 The VLF data were displayed using a profile format. The profiles

were examined and the VLF anomalies were recorded on the map as small

dots. VLF anomalies that were coincident with magnetic anomalies were

mapped as large dots. VLF anomalies are indicative of a relative increase

in the conductance of the near-surface rocks. The coincidence of magnetic

and VLF anomalies may be indicative of base metal mineralization.

The magnetic data is contoured by computer programming. The Earth's

normal field is removed from the total intensity profiles as recorded in

the field. These resultant data (in line form) are tied by a minimization

technique to provide a smooth, continuous surface that describes the local

magnetic field. This is done in two basic steps, (1) vertical datum

shifts (systematic errors) are determined to minimize mis-ties at all line

intersections, (2) the remaining mix-ties (random errors) are then removed

by beihg distributed between intersections along the data linos. During

this adjustment process, certain of the data lines may bo completely

removed if these lines fail to meet statistical requirements based on the

variance of the mis-ties of the individual lines.

The adjusted sot of magnetic profiles is now ready for gridding prior

to contouring. This gridding is accomplished by a proprietary line-oriented

gridding program. The basic requirement is that the survey be flown with

flight lines approximately parallel and more or less evenly spaced. The

. grid mesh is usually taken as the average line spacing but may be set at

any fixed value. The griddcd output is then contoured at an appropriate

contour interval.

r - - 'S ,- ;'; O

' ' ' .^vr;^;^^

'

'' : '" .'' ; -... ; - -3- ' ' : - '*

Aeromagnetic Map

The scale of this map is l" c 1,320 feet and the contour interval is

10 gammas.

There is one maximum anomaly trend exhibited on this nap. This

feature trends west-northwest and extends from the south center border of

the nap across the Cominco claim area in the vicinity of claim blocks 80T98 '2*79?! fr+t

and 60797. This feature is a portion of a major aeromagnetic maximum

trend that appears to be deformed by the syncline that lies north of this

map area.

VLF Anonrily Map

The scale of this map is l" c 1,320 feet. The small dots indicate

VI,F anomalies and the large dots indicate VLF anomalies with aeromagnetic

anomalies coincidences.

The only group of VLF anomalies of any interest that appear on this

map are located along the north boundary of the Cominco claim area in thelo 79V? 2o7*f9 2orjiy3 2o7V9* I&4'

vicinity of claim blocks 80828, 808*3, 80?fctf and north of 80*80. These

are VLF anomalies with aeromagnetic anomaly coincidences and they are

parallel to the large aeromagnetic feature noted in the discussion above.

feck C. Zahn, Mining Geophysicist

)

RECORDING SUBSYSTEMData are recorded in a digited and analog mode. The principal recorder is a 7 track Digi-Data Model 1420. The input rate is 0-200 characters per second. The packing density is 200BPI. The power required is 110V 60cps. A Non-Linear Systems Model 2710 Tape Verifier produces one full data word every minute to verify the recorded data. Data from all systems are recorded on a one second basis.The analog recording system provides a visual display of altitude* mag netic field, count rate of three isotopes, and gross radiation. These data are recorded on a six track MPE Strip Chart Recorder that operates on 110V at 60cps.

••••^.zw&s&i-••i-- • ••'Al^'y/^tS.

ELECTROMAGNETIC SUBSYSTEM

The McPhar airborne KEM system using VLF transmission from Cutler,

Maine, 17.8 KHz, as the primary field was operated aboard the Beaver

aircraft. In the absence of conductors, the electromagnetic field is

horizontal and constant in amplitude. A conductor will distort the

horizontal field and often change the amplitude of the received signal.

The KEM system continuously measures the dip of the resultant field in

degrees and may be regarded as a vertical loop system with the trans

mitter located at infinity.

3'.•f:;l;

S SM- l 5 52

.-"if- .' :

•mm^^- ;-r' . ; .N- ' : ' t

NAVIGATIONAL SUBSYSTEM , The navigational system consists of a GPL Division GPK - 1000 Doppler Navigation Radar Set, Kearfott Gyro Guide Compass System. Honeywell Electronics Altimeter Set Y G 9000D, and an Automax G 2 camera for a backup system.

GPK - 1000 Doppler Radar Set . Operational Limits

Altitude - from 40 Ft. to 50, 000 Ft. over land or water withsea state greater than Beaufort 1.Groundspeed - 80 - 800 knots.Drift Angle - o0 - 400 right or left.Temperature - operational from -540C to 710 C.Pitch Attitude - 250 nose up or down.

Accuracies (507o probability)Groundspeed - 0.17^o -fc 0. 35 knots.Drift Angle - 0.17C

Power requirements are 115V at 400cps and 28 V DC.

Kearfott Gyro Guide Compass System

The error of the output signal with reference to eyro heading is less than l0 . The error of the output signal with reference to compass transmitter reading when compensated is also less than l*.

Honeywell Electronic Altimeter Set YG 9000D

This system has an altitude accuracy of -f 5ft. * 3 ^o of actual altitude. The power requirements are 115V at 400cps and 28V DC

Automax G 2 Camera j - jj 5 'x oThis 35 mm airborne camera is used as a back up for the Doppler Radar Set. In normal operations the camera is triggered on a frame every two seconds basis. Power requirer .its are 115V at 60cps and 28V DC.

; - r\'^' :r^t;s^g|v|^f:

mw-MAGNETIC SUBSYSTEMThe Varian type V-4937A Transportable Magnetometer is operated in a fixed mode (stinger installation). The magnetometer read out is directly in gamma in the range of 20, 000 to 100, 000. The slow mode read out of l second is employed, giving l gamma sensitivity. A nominal 28V DC power is obtained by operating directly off the

taircraft battery.

K

m-

?

Author* s Qualifications - Jack C. Zahn

Graduated with a B.S. in Geology in 1961 and a M.S. in Geology with

a specialty in geophysics in 1965. Both degrees from the Ohio State

University, Columbus, Ohio.

Employed as a consultant geophysicist from 1962-1965 with

George H. Mayhew St Associates, Powell, Ohio. Projects worked on during

this period were in the fields of highway design geophysics; engineering

design geophysics, both bridge and dam site, and hydrology. Operations

were conducted in the midwest and the province of Ontario, Canada.

From 1963-1965 employed by the Ohio State Engineering Experiment

Station, Ohio State University,and conducted research with and the

evaluation of geophysical tools and techniques to be used to solve

engineering problems.

From 1965 to the present, employed as a geophysicist by the Atlantic

Richfield Company. From October, 1968 to the present, being employed in

the field of uranium exploration and airborne geophysical techniques.

Jack C. Zahn Mining Geophysicist

1C•)M- -

mm' V n :'sf: . j . "j" 1 .

^

. -w*^j^8i:

REQUIRED INFORMATION

Airborne Magnetic Survey

Company)

Aircraft:

Instrument:

Dates Survey Flown:

Geophyelsist:

Atlantic Richfield Canada Ltd., 4 King Street W, Toronto, Ontario*

Turbo-Beaver

Varian type V-4937A Transportable Magnetometer.

Between October 28 and 30, 1969.

Jack C. Zahn,c/o Atlantic Richfield Co.,1500 Security Life Bid.,1616 Glenarm.Denver, Colorado 80202.

..

"

:..f,- :'i |V

' 1 ''''

41J16SWel27 6821C 1 JOGUES 900

ifr. lr,S:, f- ,i*, 'i

|i? iv-

pK:fL'' : --" To the

'l, 'MM,,

•H..' '

ONTARIO

THE MINING ACT REPORT OF WORK

Recorder of ...........i..,,.........,*.. .... ,. ,

A itporot* form Is r*qulr*d for eoch lypi of work to b* r*cord*d.

Robert A. MacGregor K. 15070

•.H' '

vision

name of Recorded Holder Miner's Licence Box 1700, Elliot lake, Ontario " ^- .

m -r* ,' :fi":

'"

'do hereby report the performance of ....... .,,,,™,.. doysf ..

not before reported to be opplied on the following contiguous cloims

Claim No. Days Claim No. Days

. type of work

See attached schedule. ....... , ,Mj

r...... \ \i [ i-"iSi:nj5. MARIE n nm ' Mi

All the work wo* perfotme'd on Mining Cloim (s) .....(In the cose of geological and/or geophysical survey (s) where more than 18 claims ore involved attach o schedule)

READ CAREFULLY: THE FOLLOWING INFORMATION is REQUIREP BY THE MINING RECORDER.

For Monuol Work, Stripping or Opening up of Mines, Sinking Shafts or Other Actual Mining Operations - Names and

oddresses of the men who performed the work ond the dates and hours of their employment.

For Diamond ond other Core Drilling - Fpotoge, No. ond angle of holes ond diameter of core. Name ond address of

owner or operator of drill. Dotes when drilling was done. Signed core log ond sketch in duplicate.

For Compressed Air or Other Power Driven or Mechanical Equipment

Type of drill or equipment. Nomes ond oddresses of men engoged in operoting equipment ond the dotes ond hours of

their employment.For Power Stripping - Type of equipment. Nome and address of owner or operator. Amount expended. Dotes on which

work was done. Proof of actual cost must be submitted within 30 days of recording.

With each of the obove types of work sketches ore required to show the location one1 extent of the work in relation

to the nearest claim post.' In the case of diamond or other core drilling the sketch must be submitted in .duplicate.

For Geological ond Geophysical Survey - The names ond oddresses of men employed os well as dotes. Type of

instrument used in the cote of geophysicol survey. Reports ond maps in duplicate must be filed with the Minister

within 60 days of recording.For Land Survey - the name and address of Ontario Land surveyor.

The Required Information is os Follows: (Attach o list if this spoce is insufficient)

See attached list,

c. a.

/''^/** 'f..

Signoture o' Recorded Holder or Agent

The Mining Act Certificote Verifying Rtpor'

Thorncllffe Pk. Dr., Toronto, Ontario•S-SIM* i 5

hereby c ertify:l, Thot l hove a penonol ond inlimote knowledge of the facts set forth in the repv* " *"'- annned here*

lo, having performed the woik or witouted som^ during ond 'or after its completion.

1, Thot thr annexed tepoit is true,

Daied,...^! 1 ?:. ........... 19.?.?:. ...,, - '\...^' . ' ..,,,,,,,,

Stto

, o.

oz

ixoc o

V}

u

Ulu ttlo o.Ul Of

IgUl

i sUl

u.

o

^

. . -"S

g-*

-

*2*r

-

AN

D/O

R C

ER

TIF

ICA

TE

IS

550

0. O

RFO

R M

AK

ING

A F

ALS

E S

TATE

ME

NT

IN T

HIS

RE

PO

RT

SIX

MO

NTH

ST

HE

PE

NA

L '

f

"STH?

HACE (NORTH)

CLAIM NO.

SSM 207977207978207979207980207981207982207983207984207985207986207987207988207989207990

DAYS

4040404040404040404040404040

CLAIM NO.

SSM 207991207992207993207994207995207996207997207998207999208000228447228448228449228450

DAYS

4040404040404040404040404040

Ms*'

J-' .' f^QK&ZZ -'•:.v"'J,r--,?-i-SiV:: x;V r - -i'^^'^'iWft

^COMINCO

Twp !62KE:RR-MCGEE

McPhar KEM-VLF Receiver Cutler Maine Transmitter

17.8 KHz= VLF anomaly without aeromagnetic anomaly

coincidence.

O = VI.F anomaly with aeromagnetic anomaly co incidence.

N

MACE LAKE : ONTARIO

Claim Map

Scale :1 inch = 1 32O feet AtlanticRichfieldCompany

...-.--.,-^™,..™M™—,~.™.,r"-™^.-^ : ",r!BiS(!Kipi5SBpiw- 'jB*w, ,JT5-B'| 'i.,wj,. - ,,.'- ,T -j,-- .-*~,-,,™:*r*r ,. .,-T ri,' .f . - . .J.

.-..-.J

MACE LAKE, ONTARIOCLAIM MAP

AEROMAGNETIC MAP

CI = IO

TWP. 163 MJ608

V ^ o SIM 80M 79M

•10390*

-r"--

Wo/8

9*0*3

1^9951199948""

'f? ' " ^ n.' '03906^ i QTTOt

' * OT.I7

s*., 'vt^'W..-. * 9***9 \9*.*r ' W4 3 J '9**3'(,V00lV^^ f? - - VV -"K-^V!("*5S . - Vris^^^-7^.^, I^M^^^?^^^^!,^^^:^:,!

^V;--;^ /ss----- j,^*,/^,,;- TS -^ v^-^;;^- , ^^ f^ - "" ,. M-;:f ':^-** : s" . ^u^rJ****^*!^*-^ i :^?"5^* ;*193*3.

1 1600S \7?~^" ' , '."•"/'-T""".''"" ' 9Sff3l , e i - —?~ '-^Vti "" ' .fc* j^/y

t" *V1 *V^ ' *W1 !\ ^.. i

SSU l

95*30 !'**Or9! T.'-J-i '. o^-.v i 2(84,4 Uv~.

•:M , ssiw -.3**" ~ - - — — --- — — --- -. i

J S*"

,\ l| 95*29 l2'^^*'*2'

• ""•'T* ssv5J "^.^_ , x'

^*- ; ~- ; **-.4

'S-*

'- - - V- - l l SSM , SSM J

SSM

96 J-4**.

19*01

—j~rV-

' **1

SM

O**33•l . ***

. fl .

- l'J—!5Lg y^.*3: iL ''SiiL7 lH'±^^lil"!'JLf- fc3 "!Jj' f'Ii* 4fJL l i^L'**I? t ;±* 0A5ji^*.~ak^J'*~ "51*-, 11.** .o- 1- v i"" "* ,^ ,,., ..,

.*.^: .3

W'mm^^mXB

' Claim HaWP.

DISTRICT OF

ALGOMA

SAULT STE. MARIEMINING DIVISION

PATENTED LAND

CROWN LAND SALF

LEASES

LOCATED LAND LICENSE OF OCCUPATION MINING RIGHTS ONLY SURFACE RIGHTS O NLYROADSIMPROVED HOAOS

KING'S HIGHWAYS

RAILWAYS

POWER LINES

MARSH OR MUSKEG

MINES

CANCCLLED ;

PLAN NO.

H 40 CHAINS

tSEND f l i/o c***'"'

c.soLoc

N L.O M.R.O S.R.O

j-

.tr?

.1607 j

~,

~

\*--'-. "~";: