I1MMG4 2.3563 LEGAULT 010

MINING

Dlectronagnetic and Ilagnetic Surveys

for

Dome Ejcploration (Canada) Limitedon

PROJECT 144F Leduc and Legault Townships

Ontario (To Accompany Maps 80-^4 to 80-53)

June 16, 19SO

- l -

INTRODUCTION

A combined magnetic and electromagnetic survey was carried

out on Project ikkF for Dome Exploration (Canada) Limited in February

and March, 1980.

The property is located in Leduc and Legault Townships

between Oxaline and Partridge Lakes, 23 miles west of Geraldton,

Ontario. Access v.ras made from the Abitibi Camp kO itoad which inter

sects Highway 11.

The purpose of this survey was to locate sub-surface geo-

electrical conductors which eight prove to be base metal orebodies.

Several conductors were located. The accompanying maps show the

area surveyed and the results obtained.

A technical data sheet is appended to this report.

- 2 -

METHOD AND INTERPRETATION OF RESULTS - ELECTROHAGKETIC SURVEY

Operating Principle: When an electrical conductor is subjected to a

primary alternating field, a secondary current is induced in the

conductor* This current produces a secondary alternating field

which together with the primary field produces a resultant field of

different amplitude and phase from the applied primary field. These

differences may Indicate the presence of a conductor*

Operation; The battery-powered transmitter sets up a primary field

while the in-phase and out-of-phase (quadrature) components of the

complex secondary vertical field are detected by a receiving coil

and measured by means of a compensator-amplifier unit located a fixed

distance from the transmitter unit* These parameters are expressed

in percentage of the primary field*

Conductor Recognition; The typical curve over a steeply-dipping conductor

shows a low (negative - greater than' 5/*) over the centre of the

conductor* flanked by positive readings on both sides of the conductor*

Both the in-phase and the out of-phase components usually produce

the same general shape of curve. An asymmetrical curve may indicate

one or more of the following conditions: (1) more than one conductor

(2) variable conductive overburden (3) a shallow dipping conductor.

Conductivity Determination; The ratio of the amplitudes of the two

measured components, in-phase to out-of-phase, is directly proportional

to the conductivity of the conductor, in areas of non-conductive

overburden.

Conductor Location: For a single conductor, both component readings are

normally zero when either the transmitting or receiving coil is

directly above the conductor* The location of the conductor is cal

culated by adding one-half the distance between the transmitting coil

and the receiving coil (coil interval) to the co-ordinate at which

the readings are zero. A unique solution is generally not possible

in the case of multiple conductors spaced less than one coil interval

apart* This results in the possibility that an apparently wide

conductor may actually consist of two or more narrow conductors*

Depth of Penetration; The maximum depth of penetration for detection of

a steeply-dipping conductor in a geo-electrically neutral background

is about 0*7 times the coil interval. Over horizontal or flatly-

dipping conductors, penetration of up to 1*5 times the coil interval

is possible*

- 3 -

1SSULTS

Maps 80-44. 80-45

Iveak conductors were located on Line 196'?* 1+25S and Line

l44tf, 15+60JT to Line l40W, 16+80N. Tiie relatively low low-frequency

amplitudes indicate fairly low conductivity.

Neither conductor has any apparent magnetic expression,

although there is a local magnetic high 1OO feet north of the con

ductor on Line l44W at 15+60N.

The general magnetic pattern shows a zone of high magnetic

relief, up to 9OO feet wide extending from Line 1?6W, 9K to Line 96W,

2H on :^ap SO-47.

Maps 80-46. 8O-47

IJo conductors were located on this map sheet, with the

exception of a possible weakly conductive zone on Line 68TJ at 2S.

This zone has no apparent magnetic expression.

Other than the discreet magnetic zone, as mentioned above,

the magnetic pattern is rather random with many isolated "highs"

and "lows".

Maps 80-48. 8O-49

A relatively short conductor with fairly high conductivity

was located at the west end of Partridge Lake from Line 52V, 7+658

to Line 4817, 7+5OS. The magnetics over this zone are slightly lower

than background.

A long, linear conductor was located from Line 40V, 0+25N

to Line 16E, 2+1OS (Map 8O-5O). The conductor is strongest between

- k -

Lines 12V and OE. The highest conductivity is on Line OE at O+75S.

This conductor has no r.iagnetic expression.

The magnetic pattern over this area shows low magnetic

relief.

Maps 8O-50. 8O-51

A weak conductor with low conductivity was located from

Line 48E, 85 to Line 56E, 85. This conductor is on the north flank

of a fairly large magnetic feature (440O feet long and.50O feet wide)

An anomalous zone occurs in Partridge Lake between Lines

2OE and 4OE. These readings are not characteristic for a bedrock

conductor. The profile pattern suggests a shallow conductor such as

a cable or pipe along the bottom of the lake. This anomalous zone

has no magnetic expression.

Maps 8O-52. 80-53

A very weak, indefinite conductor has been indicated on

the map from Line 124E, 0+5ON to Line 132E, 1+70K. This conductor

has some magnetic expression, 2OO gammas above background on Line

124E and 300 gammas below background on Line 132E.

Anomalous readings occur in the vicinity of the railway.

These are deemed to be caused by the conductivity of the telegraph

line.

A major magnetic feature, with readings up to 4900 gammas

above background, extends across the southern edge of this map area.

A secondary, narrow magnetic band occurs parallel to, and north of

the railway.

- 5 -

RECOMMENDATIONS

The conductor on Lines 52W and kSK at 7+5OS on Hap 8O-48

is a recommended drill target. The long conductor near the base

line on Maps 80-48 and 80-50 should be drilled at its strongest

portion, i.e. on Line OE. The remaining conductors are weak and

should only be regarded as secondary targets.

Geosearch Consultants Ltd.

J. A. WOODARD, F. Eng.

Geophysicist

IH-"-"

Ontario

Ministry of Nat

GEOPHYSICAL - GEOLCX TECHNICAL DA"

2.35B3 LEGAULT900

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

TECHNICAL REPORT MUST CONTAIN INTERPRETATION. CONCLUSIONS ETC.

i

Type of Survey(s). Township or Area.

Electromagnetic and Magnetic Leduc anH Leerault Townshius

HoMer(s) Dome Exploration (Canada) LimitedMINING CLAIMS TRAVERSED

^ Survey Company. Geo search. Consultants Limited

Author of Report J. A, VoodardSuite 7OO, 88 University Ave.

Address of Author————^^———TO iron, t o On t. 115 J 1 T6Covering Dates of Survey Feb 1 to June 16, 1980

6 (BoeoittinK to office)62Total Miles of Line Cut.

SPECIAL PROVISIONS CREDITS REQUESTED

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

DAYS

Geophysical *"*—Electromagnetic—^2—Magnetometer——^P.—Radiometric______

Geological.Geochemical.

AIRBORNE CREDITS (Specal pconaoaacdte doom apply to aafcoraemveys)

^ Magnetometer. Electromagnetic. Radiometric(enter dBys per dam)

niTR. June 16/8OAalhor of Report or

(Some claims

(prefa) TB 547542

547605

547616

5*7625

547632

547644

547649

547674

J5.42684

partiallyCO^^filTGQ. J

to 547562

to 54761O

to 547622

to 547630 mmmm

to 54764O^

to ̂ 54^646

to ^47651

to 142626

to J422P6

Res.GeoL. .QualificatPrevious Surveys

Fife No. Type Date Claim Holder

l M •••••••W

TOTAL CLAMS. 81

"frfr r * S- .a.* flv ^ 1 .at '1*^

s**

^S

S"

ss*

sS

S1

"

f

//-

c/,? ̂ ^ or?/ * /Svcx?

/T -^r c^ r tf/ef * U t e*

S/*

s

s1* *Ji1,tt/Tt

-/, "t',

'tfilco*\{.o

l 1 — -sfs

sssrr

fr/*ftvi-

ss/^/*

+P*A

**

k1*^ -/-*v

l ^^. frlo.&Q/,

66*6AAC'

*

*t

ft

tt

?6/to

^

t*

u/3 ^^^^/A-C

x 9/J*HU?*)lt*-F '

^*k

Xr-V'

/^xx•v-

xxV?'^xrxx

x^r/,rt

-t/,7Xxx"W'

•*- ^ 1

x̂xM

X

T̂

X/^bfc#/^ X/^X1

**A

*/-

/Tt

7X"

fs•Vt

ffi1+Of^^IrIF^Ftr z?*rrQ^

t*WirW*r eri?o?l* 't.'//.^/7/A-C^

' .

f

f

^

7xt*/!fVxS r*7 xX

x*xxlkT XX1x^xi x"X'

^hf-Xx"X7nVftV-r/'X1

7xx* xx

xxx"

iJ^5^

r-*X

X"

xx"x"

60

f/o

1*

^OfJ-frJ?

f?

/f

01

^G 6v

4^

Is4r5?

^ STr^^OT^ J*/^9A

J?*/-A fi*c-/-.^ .^

^ \\ *t*l ^ M0 ^ ^ "xf*'\jr*"/v', -^7? j X5

1 ^ ; f f\ ' 1^

G8647G84

47683S47688

ft*** 1 o o fi

^7685'T\li. *

..-•W

y - io fl...l-547696 \\a o o

l -O J"

i- - .5476971

., .v IV 0

,*.l/"1*5477,i " TO -"I ' '47700

o.LO ft"'

,,ft-'"

0 \I'^yo-iV1 ' 1 I* ft- 11..547705L\ o " it

- V "S54 7 7'4770,1

/f X*'''

-X

LEGEND

ELECTROMAGNETIC S URVEY by

6EOSEARCH CONSULTANTS LTD

DOME EXPLORATION (CANADA) LIMITEb

Project 1 44 F

LEDUC TWP.ONTARIO

Scale : l inch to 20OfeetDate: April, I95O

Drawn: R H.H.

42E11NWM64 2 .3563 LEGAULT

547684

547683547688

547695

547706547704 -547705547703

42E11NWM64 2.3563 LEGAULT 210

^LOCATION MAP

LEGEND

Contour interval................................ 200gammas

200gamma contour..........................

lOOOgamma contour....

50OOgamma contour.

Depression........................ .......

TOTflL FIELD

MAGNETOMETER SURVEYBY

OEOSEflRCH CONSULTflNTS LTD.FOR

BASE STATION

FOR ABSOLUTE VALUES, 60,000 GAMMAS SHOULD BE ADDEP TO EACH READING

DOME EXPLORflTION (CRNflDfl) LIMITED

PROJECT 144F WEST

LEDUC TOWNSHIP

ONTRRIO

SCflLE : l INCH TO 200 FEET

RERDINUS IN GRNMRS DflTE: flPRIL 1980 MflP 80-45

-e.

476? 5476Z4547676547677

5476904768

5476 4764

LEGEND547707

547706

LOCATION MAP

ELECTROMAGNETIC SURVEY by

GEOSEARCH CONSULTANTS LTD.for

DOME EXPLORATION

(CANADA) LIMITED

I44FLEDUC- LEGAULT TWPS.

S-trong Weo.K Indefinite Scale

ONTARIO

1 inch to ZOO feetDate: April, 198O

Drawn: R. H. H. 8O-46220

s 54765Z

547674 54765

547677

54764

-547649

O x a l i n e

547707

547706

Contour interval...........................].... 200gammas

ZOOgamma contour

IOOO gamma contour

50OOgamma contour

Depression

BASE STATION

LOCATION MAP

TOTflL FIELD

HflONETOMETER SURVEY8Y

GEOSEflRCH CONSULTflNTS LTD-FOR

FOR ABSOLUTE VALUES, foO,QOO GAMMAS

SHOULD BE ADDED TO EACH READING

DOME EXPLORRTION (CRNRDfl) LIMITED

PROJECT 144F WEST-CENTRE

LEDUC t LEGRULT TWPS.

ONTfiRIO

SCfiLE : l INCH TO 200 FEET

KEflDINGS IN GRMMRS DRTE: flPRIL 1980 MflP 80-47l

42E

•' "V

547639547643547652

547606

54760754765547627

547635476i A.-V1 ^. 547634 547629 547610

5476SO

547645

54763154763LEGEND

547633547646547649

COIL INTERVAL ————3OOteet

FREQUENCIES ——High - 1777 Hx Low-444 Hz

PROFILE SCALE —— 2O9fe to 1 i nch

ELECTROMAGNETIC SURVEY Ay

6EOSEARCH CONSULTANTS LTD.•for

2.0 S

42E11NWM64 3.3563 LEGAULT 240

..ir L. ; 0 \ 547636 \ jsJSr""V H ! \ tE"- u- -'* l t \ ?\

\ i ^\ ' In-Phasa•^

(*

•N,

CONDUCTOR

R^di^r"" '^-PHASE DOME EXPLORATIONRIGHTofline High Fr.,. Low Fre,- (CANADA) LIMITED

-r *i

^J our-oP-PHASE Project 144 FOut-o-f-Pha.se HighFrC(f- LowFre^-

j LEGAULT TWP.i y* ONTARIO

S*'' S cale : 1 inch to ZOO feetSlTong WeaK Indef.n.te D*U . Apr, l, I4BU

Drawn. R. H. H. SO -48

LOCATION MAP

5476Z5

5476Z6

54764354765Z

547606

5476Z7547638 547637 \"

5476Z9 610547635 5476

547

54763Z TOTflL FIELD

MflOHETOhETER SURVEY547636547649 547 64 6 GEOSEflRCH CONSULTflNTS LTD.Contour interval................................ 200gammas

200 gamma contour

lOOOgamma contour

5OOOgamma contour

Depression

DOME EXPLORflTION (CflNflDfl) LIMITED

BASE STATION PROJECT 144F

LEG-RULT TOWNSHIP CENTRE

ONTRRIO

FOR ABSOLUTE VALUES, foO,OOO GAMMAS SHOULD BE ADDED TO EACH READING

SCflLE : l INCH TO 200 FEET

MflP 80-49REflDINGS IN GflMMHS DflTE: 'RPRIL 1980

LOCATION MAP

5476Z]

547548547603 547604

5476606

54755?5476

47554

5475476075476

54756 J

LEGEND

COIL INTERVAL

547615 ELECTROMAGNETIC S URVEY by

GEOSEARCH CONSULTANTS LTD.•for

DOME EXPLORATION

FREQUENCIES ——Hi^h - 1777 Hz. Low-444 Hz.

PROFILE SCALE ——2OVo to 1

54760 •40-. ^5476 Low Frequency High Frequency

547616 (CANADA) LIMITED

Project 144 F

High Frea- Low Freq

In-Phase Out-of-Phase High Fre^- Low Freq

LEGAULT TWP.ONTARIO

Scale : 1 mch to 2OO feetDa-te: April, Drawn. R. H. H.

Sirorxg Wea.k t ndefi mie 80-5042E11NW8*64 2.3563 LEGAULT 260

JL

547548

5

LOCATION MAPScat e : l : 50,000

r 5476Z2\-5476-547603 547604

FALLS

4 R A P I OS

547547

547562

7565476

547 b

5476155476 Contour interval................................ 2OOgammas200gamma contour lOOOgamma contour

SOOOgamma contour Depression........................ . ........^ A J

547610 547616A —— BASE STATION

FOR ABSOLUTE. VALUES; foO.OOO G AMMAS SHOULD BE ADDED TO EACH READING

RERDINGS IN GRMMRS

2QQ05

TOTfiL FIELD

HRQNETOHETER SURVEYBY

GEOSEflRCH CONSULTflNTS LTD.FOR

DOME EXPLORRTION (CflNflDfl) LIMITED

PROJECT 144F ERST-CENTRE

LEGRULT TOWNSHIP

ONTRRIO

SCRLE : l INCH TO 200 FEET

DflTE: RPRIL 1980 MflP 80-51

-*2E11NW**64 2.3563 LEGAULT 270

547544547543

47546-

47549547548 54755 5475 54755354755

5.4755 5 5475547558547556

54-75 5 9

LEGENDL Q

5475645475COIL INTERVAL ——— SOOfeet

FREQUENCIES ——H^h-l777Hz. Lov^-444 Hz

PROFILE SCALE ——2O9& to l Inch

547562High Frea- Low Frea

LOCATION MAP

JL

\os

Strong VA/eaK Indefinite

ELECTROMAGNETIC SURVEY by

6EOSEARCH CONSULTANTS LTD.for

DOME EXPLORATION (CANADA) LIMITED

Project 144 F

LEGAULT TWP.ONTARIO

Scale . \ i nch to lOOfeetDa.te : April, (980

R. W. H- 8O-5242E11NWM64 2 .3563 LEGAULT 280

Ay*

D

Contour interval................................ 200gammas200 gamma contour1000 gamma contour

SOOOgamma contourDepression

BASE STATION

LOCATION MAPScale : l : 50,000

TOTflL FIELD

HflONETOMETER SURVEY8Y

GEOSEflRCH CONSULTflNTS LTD.FOR

FOR ABSOLUTE VALUES, faO,OOO GAMMAS SHOULD BE ADDED TO EACH READING

DOME EXPLORflTION (CflNflDfl) LIMITED

PROJECT 144F ERST

LEGflULT TOWNSHIP

QNTRRIO

SCRLE : l INCH TO 200 FEET f 3RERDINGS IN GRMMRS DRTE: RPRIL 1980 MflP 80-53

42E1INVM64 2.3563 LEGAULT 230