in - yma.gov.yk.ca · xl 17-34 ya 791 63-791 80 joseph hua xl 35-1 50 ya 79734-79849 laberge...

I n 1984 a work program cons is t ing o f so i 1 sanpl ing, I .P. magnetometer and max-min electromagnetic geophysical surveys and reconnaissance mapping was done.

A road was b u i l t onto the proper ty fo l lowed by l i n e c u t t i n g and f lagging of s tat ions. The s o i l and geophysical surveys were conducted us ing t h i s g r i d which covered 24 claims. L ine spacing was 60 n w i t h 60 m between s ta t ions .

So i l samples were assayed f o r Pb, Zn, ~ g , Cu, Mo, Au, Ni and C r . Two anomalous east-west t rending zones were located. The anonalies extend f o r 400 t o 1500 m and conta in h igh values o f Mo, Pb, Zn, Ag and Cu. Values f o r gold were low.

An east-west t rend ing magnetic h igh was a l so defined. This was f e l t t o represent a t h i n se rpen t i n i t e u n i t which narks a f a u l t zone.

Geoloigical, Geochemical, Geophysical

June 1 8,1985

ASSESMENT REPORT

ON CLAIMS . i .. s

RENZO 1-49 i 1

GEF 4 -24

XL 1-170

N. LATITUDE 64'07 '

CLAIM SHEET 116-B-3 + 1 " . I + A

' .

DAWSON CITY AREA, + *,;, YUKON TERRITORY j . ,

Nanny Consultants Ltd. E. Amendolagine, P. Eng.

Work P r o g r a m : J u l y 5 - O c t o b e r 1 9 , 1 9 8 4

This report has been examined by the Geological Evaluation Unit under Section 53 (4) Yukon Quartz Miain~ Act and is allowed as representation work in the amount

Regional Manager, Exploration and Geological Services for Cornrnissionev of Yukon Territory.

TABLE OF CONTENTS

............................... INTRODUCTION 1 PROPERTY .................................... 2 LOCATION .................................... 2 ACCESS ...................................... 2

................................ WORK PROGRAM 3 ............. CONCLUSIONS AND RECOMMENDATIONS 5

COST BREAKDOWN .............................. 6 ................................. CERTIFICATE 7

APPENDIX I - CLAIM GROUP APPENDIX I1 - SURVEY PLANS

GEOLOGY I .P. LINES GEOCHEMICAL PLOTTED RESULTS MAGNETOMETER SURVEY

APPENDIX I11 - ACME LAB CERTIFICATES APPENDIX IV - DISCUSSION AND INTERPRETATION OF

RESULTS FROM MAGNETIC AND GEOCHEMICAL SURVEYS

APPENDIX V - INDUCED POLARIZATION RESISTIVITY SURVEY

I N T R O D U C T I O N

During the period of Ju ly 5 t o October 19, 1984 a s e r i e s of

explora t ion surveys were conducted on 170 XL claims, 49 Renzo

claims and 24 GEF claims i n the Dawson Mining Division of the

Yukon Ter r i to ry .

The surveys conducted consisted of a s o i l geochemical

survey, induced po la r i za t ion survey, magnetometer survey, max-min

electromagnetic survey and reconnaissance geologic observat ions

and mapping.

A l l the surveys were conducted under the supervison of

Emmanuel Amendolagine, P. Eng. of Manny Consultants Ltd.

The s o i l geochemical survey was conducted by Manny

Consultants L t d . The geologica l survey was conducted by D.

Olson, P. Eng. and the geophysical surveys were conducted by

Geotronics Surveys Ltd.

PROPERTY

The claims included a re :

Claim name No.s Holder of claim

XL 1-16 YA 65507-65522 Joseph Hua XL 17-34 YA 791 63-791 80 Joseph Hua XL 35-1 50 YA 79734-79849 Laberge Resources L t d . XL 151-170 YA 84266-84285 Laberge Resources L t d . RENZO 1-49 YA 84359-84407 Sabatino Amendolagine GEF 1-24 YA 84237-84350 Sabatino Amendolagine

A l l t he claims a r e shown on claim sheet 116-B-3 Appendix I

and a r e i n the Dawson Mining Division of the Yukon Terr i rory .

LOCATION

The property is located a t 64' 7 ' N La t i tude , 139' 12' W Longitude,

some 500 km northwesterly of Whitehorse, some 8 km nor theas te r ly

of Dawson Ci ty , Yukon T e r r i t o r y , nor theas t of the junct ion of the

Klondike River and Lepine Creek, on Moosehide H i l l s , and i n the

headwaters of Shovel Creek, Bradley Creek, Ru i t e r Creek, Noble

Creek, Fos ter Gulch, Wood Gulch, and Moosehide Creek, i n the

Dawson mining D i s t r i c t of the Yukon Ter r i to ry .

ACCESS

The property is access ib le some 500 a i r kms northwesterly of

Whitehorse by d a i l y a i r f l i g h t s from Whitehorse to Dawson Ci ty ,

Yukon Ter r i to ry .

Access t o the claims from Dawson City i s some 8 km

nor theas te r ly up Moosehide Range requi r ing truck-jeep vehic le .

WORK PROGRAM

Surveys were completed during the period of J u l y 5 t o

October 19, 1984.

The major po r t ion of the surveys were ca r r i ed out i n the

c e n t r a l po r t ion of t he claims.

The work cons is ted o f :

1 . Road bu i ld ing f o r access t o the whole proper ty (surveyed a r e a

roads shown on geology p l an ) .

2. Line c u t t i n g and f lagging . The surveyed a r e a (24 claims) was

sys t ema t i ca l ly covered wi th l i n e s i n a n o r t h e a s t e r l y d i r ec -

t i o n a t 60 meter spacing and s t a t i o n s along the l i n e s a t 60

meter i n t e r v a l s . This was the c o n t r o l f o r t he surveyed

a r e a s . Lines shown on s o i l geochemical p lans .

3. Geological mapping only i n t he surveyed area . ( ~ p p e n d i x 11).

4. S o i l geochemical survey a t 60 meter i n t e r v a l s a long the l i n e s

o n c l a i m s X L 9 9 , 101,103, 105, 107, 109, 1 1 1 , 1 1 3 , a n d c l a i m s

XLI t o 16 inc lus ive . S o i l samples were assayed f o r Au, Ag,

Cu, Pb, Zn, Mo, N i and C r . The r e s u l t s a r e discussed by

Oavid Mark i n h i s pre l iminary d iscuss ion r e p o r t Appendix I V

The assay c e r t i f i c a t e s a r e included i n Appendix 111. (survey

Plans Appendix 11)

5. Proton Magnetic Survey readings were taken on a l l s t a t i o n s on

Claims XL2, 4, 6 , 8, 10, 12, 14, 16, 99, 101, 103, 105, 107,

109, 1 1 1 , 113. The r e s u l t s a r e p lo t t ed on the Magnetic

Survey Plan. The r e s u l t s a r e discussed by David mark i n h i s

pre l iminary d iscuss ion r epor t which fo l lows the survey p lans .

6. The I.P. survey was conducted ac ros s the nor thern eastwest

t rending low i n t e n s i t y magnetometer response and ac ros s the

west boundary high i n t e n s i t y magetic response.

S i x of t he I .P. l i n e s crossed the low i n t e n s i t y magnetic

trend and the seventh I .P. l i n e t raversed ac ros s the west

boundary of t he surveyed a r e a t o check the geochemical and

high i n t e n s i t y magnetic t rend .

One max-min EM survey l i n e was superimposed on the L-900E

I P l i n e .

7. A d e t a i l e d r epo r t is included by Geotronics Surveys Ltd.

d i scuss ing the geochemical I.P. and EM r e s u l t s . Appendix V

Copies of the l i n e p lan , geochemical r e s u l t s , I .P . and

EM s e c t i o n included i n Appendix I V .

CONCLUSIONS AND RECOMI4ENDATIONS

The complete work program consisting of geology, geochemical

and geophysical surveys yielded very positive results.

It is recommended that the exploration and developement

program be continued with further surveys and diamond drilling.

Respectfully submitted,

E. Amendolagine, P. Eng.

COST BREAKDOWN

FIELD MEN

Ken Thompson 39 days @ 125/day July 5 to 28, Sept 28 to Oct 12

Renzo & Ciolifitto 31 days @125/day July 5 to August 14

Sab Amendolagine 48 days @ 150/day July 5 to August 20 Crew Cheif

D. Olson 41 days 8 200/day July 5 to Aug 15 Geologist

Soil Sample Assays Room and Board Transportation Air 4,840.76

4x4 3,080.58 Freight 753.76

M.B.W. Surveys, Linecutting Flagging Repair roads, cut new roads

Reports-drafting maps Communication Supplies Geotronics Surveys IP, EM Manny Consultants Engineering

CERTIFICATE

I , Emmanurel Amendolagine, of the C i ty of Vancouver, i n the Province of B r i t i s h Columbia, hereby c e r t i f y :

That I am a geo log i s t and r e s i d e i n Vancouver, B.C.

That I am a graduate of Hunter College of t he C i ty of New York, and Columbia Univers i ty with a B.A and M . A . , r e s p e c i t i v e l y and t h a t I have been p r a c t i s i n g my profess ion a s a geo log i s t f o r 33 years .

That I am a r e g i s t e r e d P ro fe s s iona l Engineer i the Province of B r i t i s h Columbia.

That t h i s r e p o r t i n r e f e rence t o t he s o i l geochemical survey completed, Induce P o l a r i z a t i o n , Max-Min EM Survye, geo log ica l observa t ion , road cons t ruc t ion and road r e p a i r s completed from Ju ly t o October 1984.

That t h e w r i t e r does not have, nor does he expect t o r ece ive , e i t h e r d i r e c t l y o r i n d i r e c t l y , any i n t e r e s t i n Herdis I n t e r n a t i o n a l Canada Ltd.

DATED AT Vancouver, B r i t i s h Columbia, t h i s 18th day of June 1 985.

E. Amendolagine, P. Eng.

APPENDIX I

CLAIM GROUP

A P P E N D I X I1

SURVEY PLANS GEOLOGY

I.P. L I N E S GEOCHEMICAL PLOTTED R E S U L T S

MAGNETOMETER SURVEY

- 960 E 'E' B.C

CLAIM GROUP

I HERDIS INTERNATIONAL CANADA INC. SURVEY AREA

it.

I72

irs')

I87

110

I22

I17

UI

117

'57

a1 p /

n

as&@

117 - :m

U)

Y

- 960 E 'E' B L

- 8 4 0 E

- 7 2 0 E

- 600 E

- 480 E

- 3 6 0 E

- 240 E

- l2OE

- o + m B.L.

It- X L CLAIM GROUP

L E G E N D

XL C L A I M S

MAGNETIC SURVEY I DATA & CONTOURS

i

L E G E N G

XL CLAIM GHOUF I W O I A L O Y I 15 - 1) 1.5 11 %.11

0 m l m m v a m I T".*,tllO" £3 10- 14 e t* S.1.4.s 1 C 7 C 1 1 I I SURVEY AREA * . c * C * w r o - ,0 6 73,

0 ll.r,ll.lO). 0 .mOI.IOU~

.or1 - C-LV r m ~ w 1 1 0 w A W L*QALOUS V ~ L . L I w o n r o

HERDIS INTERNATIONAL C A N A 3 A I N C I X L C L A I M S

GEOCHEMICAL S U R V E Y

GOLD IN SOILS (ppb) DAWSON MINING DISTRICT Y U K O N T E R R I T O R Y

- -- - sorer sv IAN.. C O ~ I Y L ~ U ~ S LTD c a w YIIII.LI I . n.+

w.1. .. n o * "OLDIIS. L.0 1 mi r

- 1200 E

- 1080 E

- 960 E 'E'

- 840E

- 7 2 0 E

- 600 E

- 480 E

- 360 E

- 240E

- l2OE

- 0 +a, B.L.

- lzo w

- 240 w

- 3 6 0 W

- 480 w

- 6 0 0 W

L E G E N D

I XL CLAIM GROUP

HERDIS INTERNATIONAL CANADA INC. - -

X L C L A I M S SURVEY AREA

I G E O C H E M I C A L S U R V E Y I DAWSON MINING DISTRICT Y U K O N T E R R I T O R Y

- UOE

- 0+m B.L.

L E G E N D

L E G E N D -- A . .. . . . A .

SURVEY 6 - 4 + - L L * * - - ' ~ , - L - . l . . .- A -

*, 32 m , m ,, * "3 9 73 T. : .\ - , , e -- 4 -+ ~ - - * . r - - - . -*- -- + - - -. .&. u

INTERNATIONAL CANADA INC .-

X L C L A I M S

I GEOCHEMICAL S U R V E Y

XL CLAIM GROUP

XL CLAIM GROUP L E G E N D --P

HERGIS INTERNATIONAL CANADA INC - -

XL C L A I M S

SURVEY AREA

I G E O C H E M I C A L S U R V E Y I DAWSON MINING DISTRICT YUKON TERRITORY

L E G E N D

XL CLAIM GROUP .- 0 m n x , r a . m w x r

I t T E r l S

HERDIS INTERNATIONAL CANADA INC. ---

XL C L A I M S

I GEOCHEMICAL S U R V E Y I CHROMIUM IN SOILS (pprn) I I DAWSON MINING DISTRICT YUKON T E R R I T O R Y

.'E' B.L.

- TZO E

- o+m B.L.

- IZO w

- m w

- 3 6 0 w

- w*

- W W

L E G E N D

XL CLAIM GROUP -

7 HERDIS INTERNATIONAL CANADA INC.

X L C L A I M S

GEOCHEMICAL S U R V E Y

NICKEL IN SOILS (ppm) DAWSON MINING DISTRICT Y U K O N TEf?RITORY

SURVEY AREA

APPENDIX I11

ACME LAB ASSAY CERTIFICATES

CME F Y J A L Y T I ~ A L LABORATORIES LTD. DATE RECEIVED: M6 1QW 52 E.HASTINGS ST.VANCOUVER B.C. V6A 1R6 tiONE 253-5158 DATA L I N E 251-1011 DATE REPORT HAILED:

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APPENDIX 11$

DISCUSSION AND INTERPRETATION OF RESULTS FROM

MAGNETIC AND GEOCHEMICAL SURVEYS

DISCUSSION AND INTERPRETATION OF RESULTS FROM MAGNETIC AND GEOCHEMICAL PROGRAM BY D. MARK

The f o l l o w i n g is a p r e l i m i n a r y d i s c u s s i o n o f t h e r e s u l t s o f t h e m a g n e t i c and s o i l g e o c h e m i s t r y s u r v e y s on c l a i m s XL1 t o 150 i n t h e Dawson Min ing D i v i s i o n , Yukon T e r r i t o r y

The o b j e c t i v e o f t h e work was t o l o c a t e l o d e g o l d d e p o s i t s a s t h e s o u r c e o f t h e p l a c e r g o l d l o c a t e d downst ream f rom t h e p r o p e r t y and mined d u r i n g t h e K l o n d i k e g o l d r u s h .

Only 2 4 o f t h e 150 c l a i m s were c o v e r e d f o r t h e s o i l g e o c h e m i s t r y s u r v e y , and o n l y 16 o f t h e s e f o r t h e m a g n e t i c s u r v e y .

The p u r p o s e o f t h e m a g n e t i c s u r v e y was to a s s i s t i n mapping geo- l o g y s i n c e much o f t h e p r o p e r t y is o v e r b u r d e n c o v e r e d and t h e r e a r e few o u t c r o p s .

The e s t a b l i s h e d s u r v e y l i n e s on t h e p r o p e r t y r u n i n a n o r t h e a s t - s o u t h w e s t d i r e c t i o n w i t h t h e l i n e s e p a r a t i o n a t 60 m.

The m a g n e t i c r e a d i n g s were t a k e n e v e r y 60 m on t h e s u r v e y l i n e s and t h e d a t a was s u b s e q u e n t l y d i u r n a l l y c o r r e c t e d , p l o t t e d and c o n t o u r e d .

The s o i l s a m p l e s were p i c k e d up e v e r y 60 m o n t h e same l i n e s . They were t h e n t e s t e d f o r l e a d , z i n c , s i l v e r , c o p p e r , molybdenum and g o l d by A c m e A n a l y t i c a l L a b o r a t o r i e s o f Vancouver . S i n c e g o l d i n s o i l s c a n b e q u i t e l o c a l i z e d and s i n c e t h e s a m p l e s were t a k e n e v e r y 60 m , a r e l a t i v e l y l a r g e d i s t a n c e , t h e s a m p l e s were a l s o t e s t e d f o r t h e o t h e r m e t a l s men t ioned above a s t h e s e m e t a l s c a n be p a t h f i n d e r s f o r g o l d , N i c k e l and chromium were a l s o t e s t e d when A c m e n o t e d t h a t t h e s e t w o m e t a l s were h i g h l y anomalous i n t h e soi-1s.

Only t h e t r a n s i t i o n and anomalous r e s u l t s f o r t h e s e v e n m e t a l s were p l o t t e d , e a c h m e t a l on i t s own map. The t r a n s i t i o n r e s u l t s ( a term t o d e n o t e r e s u l t s t h a t a r e i n be tween background and anomalous) were c i r c l e d by a l i g h t c i r c l e , and t h e anomalous re- s u l t s by a h e a v y c i rc le .

The s t r o n g e s t and most p r o m i n e n t f e a t u r e o f t h e m a g n e t i c s u r v e y i s a m a g n e t i c h i g h l o c a t e d on t h e s o u t h e r n p a r t o f t h e s u r v e y a r e a . I t i s e a s t - w e s t t r e n d i n g and r e a c h e s a h i g h o f 61 ,011 gam-

mas w i t h t h e background i n t h e a r e a o f t h e h i g h b e i n g a b o u t 57 ,400 gammas. T h i s anomaly was p i c k e d up by t h e government a i r - b o r n e m a g n e t i c s u r v e y which shows t h e h i g h t o e x t e n d somewhat f u r t h e r w e s t o f t h e s u r v e y a r e a . The w e s t e r n end o f t h e a i r b o r n e m a g n e t i c h i g h c o r r e l a t e s d i r e c t l y w i t h f o l i a t e d s e r p e n t i n i t e a s shown on t h e I n d i a n and N o r t h e r n A f f a i r s Canada Map f o r t h e a r e a (Bedrock Geology and M i n e r a l i a t i o n o f t h e K l o n d i k e Area [West] , E x p l o r a t i o n and G e o l o g i c a l S e r v i c e s D i v i s i o n , W h i t e h o r s e , Yukon). T h e r e f o r e , undoubedly , t h e whole anomaly r e f l e c t s a body o f t h e s e r p e n t i n i t e t r e n d i n g i n an e a s t - w e s t d i r e c t i o n . I t is a t l e a s t 1 ,000 m l o n g and open t o t h e w e s t . Though t h e anomaly is much w i d e r , t h e w i d t h o f t h e c a u s a t i v e s o u r c e , t h e s e r p e n t i n i t e , is a b o u t 100 m.

The anomalous l o w on t h e n o r t h s i d e o f t h e anomaly is r e l a t e d t o t h e h i g h and i s c a u s e d by t h e d i p o l e e f f e c t r e l a t e d t o h i g h l y m a g n e t i c s o u r c e s .

A s m a l l anomalous h i g h on t h e eas t s i d e o f t h e s u r v e y a r e a on l i n e 1440 c o u l d be c a u s e d by a body o f s e r p e n t i n i t e a s w e l l , t hough much s m a l l e r t h a n t h e o n e c a u s i n g t h e m a j o r anomaly.

On t h e n o r t h s i d e o f t h e s u r v e y a r e a is a n o t h e r m a g n e t i c h i g h t r e n d i n g e a s t - w e s t . I t is open o n t h e e a s t s i d e o f t h e s u r v e y a r e a a s w e l l a s t h e w e s t s i d e . T h i s anomaly h a s a n a m p l i t u d e b a r e l y above t h e background a n d t h e r e f o r e t h e w r i t e r f e e l s t h e c a u s a t i v e s o u r c e is n o t l i k e l y s e r p e n t i n i t e , b u t more l i k e l y m e t a - v o l c a n i c s which a r e known t o o c c u r i n t h e a r e a . Though t h e anomaly is s e v e r a l hundred meters w i d e , it is d o u b t f u l t h a t t h e c a u s a t i v e s o u r c e is t h i s wide..

On t h e s o u t h e r n p a r t o f t h e s u r v e y a r e a , t h e background is a b o u t , 57,400 gammas. AS o n e g o e s n o r t h , t h e background g r a d u a l l y i n - c r e a s e s to 57 ,800 gammas. Any o f t h e o u t c r o p s l o c a t e d i n t h e s u r - vey a r e a a r e e i t h e r g r e e n c h l o r i t e s c h i s t , a little more promin- e n t to t h e s o u t h , or se r ic i te s c h i s t , a l i t t l e m o r e p r o m i n e n t t o t h e n o r t h . The change i n m a g n e t i c b a c k g r o u n d , t h e r e f o r e , c o u l d b e due to a s m a l l change i n t h e r o c k - t y p e . A n o t h e r possible c a u s e is a m a g n e t i c r o c k - t y p e , s u c h a s b a s i c v o l c a n i c s , o c c u r r i n g a t d e p t h on t h e n o r t h e r n p a r t o f t h e s u r v e y a r e a .

On the soil geochemistry survey, two main anomalous zones were located. Both occur on the northern part of the survey area and appear to be related to the low-amplitude magnetic high that, as discussed above, could be caused by meta-volcanics. Also both strike in an east-west direction, as do both of the magnetic highs,

The more interesting anomalous zone occurs on the northern part of the mangetic high and on its eastern edge. It appears to be at least 400 to 500 m long and is open to the east. It is ex- tremely anomalous in silver (up to 8.8 ppm) and quite anomalous in molybdenum, zinc, lead and copper. There -are also anomalous values in nickel and chromium.

I The second zone occurs a few hundred meters to the south of the low-amplitude magnetic high. This zone appears to be at least 1,500 m long, is open on the west side of the survey area and is narrower than the above-mentioned soil geochemistry anomaly. This zone is anomalous in silver, lead, zinc and copper. It also contains a few anoaalous values in nickel, chromium and molybdenum. Though this is a definite anomalous zone, the values are not as anomalous as that in the other soil geochemistry high.

Both of these anomalies contain very little in anomalous results for gold. Considering that much placer gold was mined on the property as well as downstream to the east, it seems quite probable that gold mineralization occurs on the proprty. The lack of gold results in the soil geochemistry could be due to any or all of the following reasons:

1. According to F. Marshall Smith, P.Eng., consulting geologist and geochemist, the high chromium in the soils can prevent the gold from being seen in soil tests, even though it may occur in anomalous amounts.

2. The spacing of the soil samples is relatively large, The mobility of gold in soils is quite low.

3. In the lab, the samples were sieved to -80 mesh. Therefore, coarser gold (necessary for placer deposits) may have been sieved out.

4. Clay deposits are noted throughout the survey area, some to

the north, but much more to the south. This can retard metals and metal ions from reaching the surface.

In addition to the two above-noted soil geochemistry anomalies,

four areas anomalous in nickel and chromium were also discov-

ered. This was quite accidental, since the prime objective was to

locate lode gold mineralization. The four areas are as follows,

listed in order of exploration interest.

Area 1 is located on the west side of the survey area on the

boundary of XL 7 and 9 claims. his anomalous zone is open to the

west but is at least 400 m long. It reaches a high of 1,018 pprn

in nickel and 945 pprn in chromium. These results are very high

considering the background in both metals is well below 100 pprn

(probably about 40 to 50 pprn),

Area 2 occurs principally on XL 4 claim. It also correlates

directly with the magnetic high, and therfore, probably, a body

of serpentinite, This is not surprising since nickel-chromium

mineralization often occurs with ultramafics, such as serpentin-

ite. This anomalous zone reaches a high of 354 ppm nickel and 269

pprn chromium. The size is about 300 by 500 meters.

Area 3 occurs on the XL 5 claim. It is open to the west but has a

minimum length of 300 m. The magnetic survey did not cover this .

area but the nickel chromium anomaly occurs on strike of the main

magnetic high. Therefore this anomaly is also probably related to

serpentinite. It reaches a high of 477 ppm nickel and 305 pprn

chromium.

On the XL 105 claim occurs the fourth anomalous area in nickel-

chromium, This area contains only two anomalous samples but both

are very high, and it occurs on the edge of the survey area. The

nickel is as high as 539 ppm, and the chromium, 361 ppm.

.- .

In conclusion, the results of the work to date are considered very encouraging. Though the nickel-chromium results are of exploration interest worthy of follow-up work, it is felt the prime interest should continue to be lode gold. As a result the writer considers the multi-element anomaly located on the northern part of the low-amplitude magnetic high centered on line 2940 to be a priority. There is an excellent chance for locating mineralization in this area. Also of strong interest is the second multi- element anomaly located south of the low-amplitude magnetic high.

Further exploration is recommended as follows:

1. Soil sampling should continue to the east of the main anomalous zone in order to determine the extent of this anomaly. Also the soil anomalies (including the nickel-chromium ones) should be detail sampled, say, at 20-meter centers.

Induced polarization-resistivity surveying should be done across the two multi-element soil anomalies, especialy the prime one on the east side of the survey area. The induced polarization should respond to any sulphides and/or graphite associated with or causing the soil geochemistry highs. The resistivity should respond to the mineralization as well since alteration, or graphite associated with any mineralization should be seen as resistivity lows. The purpose of the induced polariza t ion-resist ivi ty work would be to more accurately delineate the mineral zones, thus giving more accurate drill targets.

Respectfully submitted,

Ceophysicis t &

APPENDIX V

INDUCED POLARIZATION RESISTIVITY SURVEY

GEOTRONICS SURVEYS LTD. 403 - 750 W. PENDER ST. VANCOUVER. CANADA V6C 2T7 (6041 687-6671

Herdis International Canada Inc. c/o Manny Consultants Ltd. 4550 Harriet Street Vancouver, B.C. V5V 4K5

November 16, 1984

Attention: Emanuel Amendolagine, ~.Eng. Consulting Geologist

Induced Polarization-Resistivity Survey XL Claims

Dawson Mining Division, Yukon Territory

Dear Sirs:

The above-noted work was carried out in October, 1984 and has been completed. The following is therefore a summary report on the results and includes information given in the writer's previous letter dated October 22, 1984.

The work was done across soil geochemistry and magnetic anomalies revealed in previous work and reported on in a previous letter by the writer dated September 19, 1984. The purpose was to delineate the cztisatlve sources more precisely and to determine the possibility of sulphides occurring with or being the causative sources.

The survey was run across three anomalous zones. Two were principally anomalous in silver, molybdenum, zinc, lead and copper; and the one in nickel and chromium.

The soil sampling and magnetic surveying were done on lines run- ning northeast-southwest. However, all indications were that the causative scurces were striking east-west, and therefore, of nec- essity, the IP-resistivity lines were run north-south. The one exception is the west boundary line which was run in a southeast direction along the southwest boundary of the previous survey

grid in order to check a chromium-nickel magnetic anomaly. The north-south lines run were 240W, 300E, 540E, 900E and 1140E.

The first two lines that were surveyed, lines 540E and 900E, were run with the dipole-dipole array with a dipole length of 30 m and a dipole separation of 1 to 5. This gave a depth penetration of approximately 90 m. These survey parameters resulted in a fairly detailed pseudosection which was felt necessary since the size of the mineral zone that was being explored for was unknown. From this it was determined that the causative source was fairly large and therefore the remaining lines were surveyed with a dipole length of 60 m and a dipole separation of 1 to 3. The resulting depth penetration is up to 120 m.

The results are very positive. Over the main soil anomalous zone, (described in the previous letter on soil geochemistry-magnetic results as northernmost, at least 400 m long, open* to the east) the survey revealed a very strong IP anomaly (50 to 90 milli- seconds) correlating directly with a strong resistivity low anomaly (2 to 20 ohm-meters). This is a classic geophysics model for disseminated or fracture-filling sulphides. Considering the di- rect correlation with silver, molybdenum, zinc, lead and copper soil anomalies, the possibility of the occurrence of economic mineralization is quite good.

The IP-resistivity survey shows the zone to extend for 1,380 meters in an east-west direction with it being open on both ends. However, the soil results are anomalous only on the eastern 400 to 500 meters of the IP-resistivity response. This suggests either, ( 1 ) mineralization only occurs on the eastern part of the structure that the IP-resistivity is responding to, or, (2) mineralization occurs along the total length of the IP-resistivity response, but along the western part it occurs too deep for the soil geochemistry to respond to (though there is some molybdenum response).

When it was discovered how low the resistivity values were and therefore how stong the conductor was that was correlating with the soil results, it was decided to send a MaxMin electromagneto- meter (EM) to the job site by air cargo. This was done for two reasons. Firstly, the EM may provide extra information in order to optimize diamond drill hole location and therefore save on diamond drill costs. Secondly, if the EM responds to the mineral-

ization adequately, this would saye significant costs in any fu- ture exploration work on the XL claims.

The EM work, which was done in the horizontal loop mode, was carried out across the main anomalous zone on line 900E. Two profiles were run, one at 100 meter coil separation, and the second at a 200 meter coil separation. ~ l l five frequencies were read (222, 444, 888, 1777 and 3555 Hertz).

The 100-meter coil profiles were interpreted resulting in 5 conductors described as follows:

Conductor A Model: Thin plane conductor (relative term, could be up to 50 m

thick). Location: 300N Depth to top: 15 to 20 m Dip: 45 to 75" S Conductivity-thickness: 30 to 80 mhos with increasing depth.

Conductor B Model: 2 closely-spaced thin-plane conductors Location: approximately 4+25N, 4+75N Depth to top: probably 10 to 30 m Dip: unknown, probably steep, i.e. 70s to 70N Conductivity-thickness: unknown

Conductor C Model: thick conductor with width of 100 m Location: center at 6+00N Depth to top: unknown Dip: unknown Conductivity-thickness: increasing with depth.

Conductor D Broad conductive zone from approximately 50s to 350s; no other information available.

Conductor E possible shallow, weak conductor at 1+50N; no other information available.

Of the above conductors, that labelled A occurs within the main anomalous zone. The 200-meter coil results, which have twice the depth penetration, appear to show two conductors at the Conductor A location with at least c n e dipping to the north. The, location of these two conductr~rs is 250N and 350N. A possihie explanation

is t h a t t h e 250N c o n d u c t o r was t h e o n e p i c k e d up by t h e 1 0 0 - m e t e r c o i l p r o f i l e , d i p s to t h e s o u t h a n d is a t a s h a l l o w e r d e p t h . The 350N c o n d u c t o r , h o w e v e r , o c c u r s a t too g r e a t a d e p t h f o r t h e 100- meter c o i l p r o f i l e t o b e s e e n . U n l i k e t h e 250N c o n d u c t o r , t h i s o n e d i p s t o t h e n o r t h . The r e s i s t i v i t y r e s u l t s somewhat c o r r o b o r - a t e t h i s e x p l a n a t i o n .

C o n d u c t o r B o c c u r s o n t h e n o r t h e r n p a r t of t h e ma in s o i l geochem- i s t r y a n o m a l o u s z o n e . P o s s i b l y t h i s c o n d u c t o r is r e f l e c t i n g a f a u l t , s h e a r o r c o n t a c t z o n e i n d i c a t i n g t h e c a u s a t i v e m i n e r a l i z a - t i o n i s s t r u c t u r a l l y c o n t r o l l e d . T h e r e is some c o r r e l a t i o n w i t h t h e r e s i s t i v i t y a n d I P r e s u l t s .

S i n c e t h e IP crew h a d a m a g n e t o m e t e r w i t h them, l i n e 900E was r u n w i t h r e a d i n g s t a k e n e v e r y 10 m. The p u r p o s e was to more c l o s e l y c o r r e l a t e t h e m a g n e t i c h i g h s i n c e t h e m a g n e t i c su;vey h a d b e e n d o n e o n n o r t h e a s t - s o u t h w e s t l i n e s . T h e h i g h was o u t l i n e d a n d is shown t o e x t e n d f r o m 320N t o 740N. A n o t h e r n a r r o w m a g n e t i c h i g h c e n t e r e d a t 170N, c o r r e l a t e s w i t h a r e s i s t i v i t y h i g h , a n d t h e r e -

! f o r e p r o b a b l y r e f l e c t s a n i n t r u s i v e d y k e .

What g e o l o g i c a l mode l c a n b e f o r m u l a t e d to e x p l a i n a l l o f t h e g e o p h y s i c i s a n d g e o c h e m i s t r y r e s u l t s may o v e r t h e m a i n z o n e , b e d i f f i c u l t a t t h i s p o i n t t o come u p w i t h , s i n c e t h e r e is v e r y lit- t l e o u t c r o p i n t h e a r e a . The r e s u l t s as w e l l a s t h e d o w n s t r e a m p l a c e r g o l d s t r o n g l y s u g g e s t s u l p h i d e m i n e r a l i z a t i o n w i t h g o l d and s i l v e r v a l u e s . The r e s i s t i v i t y l o w may b e r e s p o n d i n g to a s s o c i a t e d g r a p h i t e a s w e l l a s a l t e r a t i o n . The I P may b e r e s p o n d - i n g to s u l p h i d e s a n d / o r g r a p h i t e . The MaxMin EM may b e p i c k i n g u p g r a p h i t e o n t h e c e i l i n g o f t h e g o l d - s i l v e r - s u l p h i d e z o n e . T h e m a g n e t i c s c o u l d b e i n d i c a t i n g a n i n t r u s i v e o r a v o l c a n i c f l o w oc- c u r r i n g w i t h or a d j a c e n t t o t h e m i n e r a l z o n e . The s o i l geochem- i s t r y r e s u l t s r e f l e c t c a u s a t i v e m i n e r a l s d i r e c t l y b u t o n l y f r o m t h e s u r f a c e o f t h e b e d r o c k ( t h a t is , n o t to d e p t h ) . The s o i l re- s u l t s i n d i c a t e t h e z o n e t o h a v e a w i d t h o f a p p r o x i m a t e l y 200 m f rom 300N to SOON. S i n c e t h e a n o m a l y is o n a n o r t h - f a c i n g s l o p e , t h e w i d t h o f t h e a n o m a l y c o u l d b e c a u s e d b y m e t a l i o n m o b i l i t y n o r t h w a r d s . T h e r e f o r e t h e c a u s a t i v e s o u r c e c o u l d b e n a r r o w e r . However , t h e m o b i l i t y is n o t f e l t to b e g r e a t s i n c e t h e s l o p e is q u i t e m o d e r a t e .

Lines 540E and 240W were run across the second soil anomalous zone (silver, lead, zinc, copper) and a similar, though not quite as strong, response was shown across it. The minimum length for this IP-resistivity zone is 780 m though the soil geochemistry results suggest a minimum length of 1,500 m with it open on both ends. The IP-resistivity results suggest the zone to dip to the north.

The west boundary line shows an IP high correlating with a chromium-nickel soil geochemistry high and a resistivity high of mod- erate intensity. It also correlates with the probable westward exteasion of the very strong magnetic high. As mentioned in a previous letter, the magnetic high is probably reflecting serpentinite which would also explain the resistivity high. Chromium and nickel mineralization are often associated with ultrabasic bodies such as serpentinite. The IP high could also .be reflecting the magnetite that is causing the magnetic anomaly, or, possibly, sulphides as well.

Sincere3 yours, G N T R O N S SURVEYS LTD.

Geo hysicist bavt

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091671.pdfTable of ContentsAppendicesAppendix IAppendix IIAppendix IIIAppendix IVAppendix V

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