arsenepyrite pyrrhetite bearing geld aleng prespecting ...

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ARIS SUMMARY SHEET o District Geologist P ince George Off Confidential 89 06 13 ASSESSMENT REPORT 17528 MINING DIVISION Caribee PROPERTY LOCATION Pine Weods LAT 51 58 00 UTM 10 5759398 NTS 0 g2N14E pine l Weeds 1 8 stowell o Serack M L 1988 34 Pages Geld LONG 348860 125 12 00 CLAIM S OPERATOR S AUTHOR S REPORT YEAR COMMODITIES SEARCHED FOR GEOLOGICAL SUMMARY Fifteen centimetre veins of arsenepyrite pyrrhetite bearing values of geld cut micredieritic te dieritic intrusives aleng fracture s stems The veins are sub herizental and discentinueus WORK DONE prespecting PETR 2 sample s PROS 300 0 ha Map s 1 Scale s 1 5000 ROCK 14sample s ME 092N 033 FILE n i I I I I

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ARIS SUMMARY SHEET

oDistrict Geologist P ince George Off Confidential 89 06 13

ASSESSMENT REPORT 17528 MINING DIVISION Caribee

PROPERTYLOCATION

Pine WeodsLAT 51 58 00UTM 10 5759398NTS 0g2N14E

pine l Weeds 1 8stowell o

Serack M L

1988 34 Pages

Geld

LONG

348860125 12 00

CLAIM SOPERATOR SAUTHOR S

REPORT YEARCOMMODITIES

SEARCHED FOR

GEOLOGICALSUMMARY Fifteen centimetre veins of arsenepyrite pyrrhetite bearing

values of geld cut micredieritic te dieritic intrusives alengfracture s stems The veins are sub herizental and discentinueus

WORK

DONE prespectingPETR 2 sample s

PROS 300 0 ha

Map s 1 Scale s 1 5000ROCK 14sample s ME

092N 033FILE

n

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LOG NO OlACTiON

RD

PROSPECTING REPOIT

FilE NO

CARIBOO MINING DIVISION 51 58 N 125 12 W

NTS 92N 14EPINE WDODS CLAIMS

Pine 1 4 record no 7832 7857 7858 7859 7 expiring on July 28 1989

Woods 1 8 record no 8573 8574 857 8576 8577 8578 8579 8580 8

fILMED JGEOLOGICAL BRANCHASSESSMENT REPORT

expiring on August 14 1988

OWNERS and OPERATORS

O Stowell and S

l

REPORT PREPARED BY

XARJORIE L SERACK GEOLOGIST

Phone 604 986 2893

P O BOX 86913 HORTH VANCOUVER B C V7L 4P6

JUNE 10 1988

MINISTRY OF ENERGY MINES

AND PETROLEUM RESOURCESj R dec

I J U N 1 3 1986I SUBJECT

FILEVANCOUVER B C

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INDEX

oINTRODUCTION 1

LOCATION AND ACCESS 1

CLAIMS 2

HISTORY 2

REGION L GEOLOGY 2

PROPERTY GEOLOGY 2

MINERALIZATION 3

CONCLUSIONS 4

RECOMMENDED PROGRAM 5

STATE NT OF EXPENDITURES 6

STATEMENT OF QUALIFICATIONS 7

oFIGURES

1 Location l p 1a

2 Claim Map 2a

3 Prospecting Map in pocket

APPENDIX A Photographs of the Pine Woods Property

APPENDIX B Petrographic Results

APPENDIX C Analytical Results

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oPINE WOODS CLAIMS

CARIBOO MINING DIVISION

NTS 92N 14E

5158 N 125 12 W

INTRODUCTION

The author and O stowell prospected the Pine and Woods

Claims August 11 and 12 1987 and the author returned to the

claims on April 27 1988 via helicopter to gather additional

information Traverses were plotted by means of compass and

pace survey Detailed measurements in the vicinity of the main

showings were made with a survey tape Traverses were designed

to cross anomalous areas indicated by an earlier regional survey

o

Samples were collected on both trips to the property

Sections were cut from these and observed under 40x magnification

with the aid of a microscope Measurements of grain sizes were

made utilizing the scale built into the microscope An unusual

silver mineral was observed in one of the samples The sample

was sent to Vancouver Petrographics for further study where two

sections were made of the sample Their report is included in

Appendix B All samples were examined under ultra violet

lightThe property was also visited by representatives of

MineQuest Explorations in November 1987 who consented to the the

use of their sample results in the submission of this report

The helicopter provided a bird s eye view of the property

to give a better idea of the structures present on the property

and to locate other gossanous showings While weather conditions

did not permit landing on any of the sites observed their

locations were recorded and elevations determined by hovering at

eye level with the showings and determining the elevation by

means of the helicopter altimeter Photographs of these showings

are contained in Appendix A to this report

LOCATION AND ACCESS

The Pine Woods claims are located 257 km west of Williams

Lake B C and 16 km southwesterly from Kleena Kleene B C on the

Klinaklini River Figure 1 The Claims are accessable via the

Bella Coola Highway to Kleena Kleene and from there a four by

four forestry access road leads to the claims A spur road leads

to the main showings on the property The forest access road

runs along the southern margin of the Woods claims The property

is located in a sandy soiled pine forest between the elevations

of 820 and 1400 m The claims are located on the margin of the

coast plutonic complex where it comes in contact with the Nechako

Plateau

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CLAIMS

o Pine 1 4 record no 7832 7857

7 expiring on July 28 1989

Woods 1 8 record no 8573 8574 8575

8578 8579 8580 8 expiring on August

7858 7859

8576 8577

14 1988

They are currently held by O stowell and S Fadenrecht

as a group under private agreement between the parties All

claims h ve been staked on the two post system Figure 2

HISTORY

The property was found by Mr Woods while searching for

the source of substances which had made his horses sick from

drinking the water The claims were privately held until their

option to Cadillac Explorations and McLeod Copper in 1973 when

three diamond drill holes were completed in the vicinity of the

main shdwing The ground was mapped by Asarco in 1975 and a

geochemLcal survey was conducted but never recorded for

assessm nt In 1979 the ground was staked by Mr Stowell and

subsequ ntly optioned to Rhyolite Resources Inc who conducted a

regional geochemical program staked additional ground and

conducted a follow up geochemical program The ground was

allowed to lapse Mr Stowell restaked the main showing in 1985

and S Fadenrecht staked the adjacent Woods Claims in 1987

REGIONA GEOLOGY

o Inclusions of altered sediments and volcanics occur in

granitic to dioritic terrain in the immediate vicinity of the

property To the northeast of the property the dominent

lithologY appears to be an andesitic lapilli Tuff with clasts up

to 15cm in diameter In places the tuff has been hydrothermally

altered to a serecitic assemblage The tuff appears to be in

fault oontact with granitic rocks to the southwest Taylor Creek

Group shales siltstones and greywackes are reported to occur on

the banks of the Klinaklini River

Northeast Southwest and North South striking faults cut

through the property and are splay faults to the main Tchaikasan

faultThe Perkins Peak Gold Prospect of Kleena Kleene Gold

Mines lies 19 km southeast of the main showing

PROPERTY GEOLOGY

Hornfels metasedimentary volcanic roof pendants occur

within an intrusive complex of dioritic to granodioritic

composition Figure 3 The pendants are commonly grey and

brown fine grained volcanic sand or siltstones Variability in

composition results in alternate color banding 2 mm thick

Outcrops are generally small and appear more as subcrop There

does notappear to be any sulfide associated with the hornfels

n 2

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o

The predominent lithology present on the property is a

dioritic to granodiorite intrusive Several phases of intrusion

are present The dominent phase appears to be a grey to white

hornblende diorite In places the hornblende is partiallyaltered to chlorite In some phases minor biotite is also

present in the matrix The percentage of quartz in the matrix is

variable upto 5 Quartz eyes approximately 5 em in diameter

may also be seen in some samples The intrusive forms well

rounded outcrops which are sparsely vegetated It weathers to

form a sandy soil in most places although in the western portionsof the Woods claims the intrusive appears to be more silicified

and forms resistant ridges which are especially dominent when

observed from the air Trace pyrite is present in the matrix in

areas away from the main showing In the vicinity of the main

showing trace amounts of disseminated chalcopyrite arsenopyriteand sphalerite are visible

At the main showing it appears as if three different

dioritic phases occur Massive arsenopyrite occurs near or at a

dark grey black microdioritic to andesitic dyke which has been

interpret d by some geologists as hornfels mafics Microscopicexamination however indicates a primary origin See Appendix B

XINERAL I ZATION

o

Gold and silver mineralization occurs with arsenopyritein subhor zonal fissure viens cutting the microdiorite The five

most significant viens each average 15 em thick but locally may

swell upto 40 em The veins are undulating and appear to occur

along structural breaks There are reports of similar viening in

the hornfels Faulting is evident in the area of mineralization

An assemblage of galena sphalerite arsenopyrite chalcopyriteargentite pyrite and pyrrhotite is present in the fracture

fillings The dominent sufide appears to be arsenopyrite which

is a silver grey in color There also appears to be a largepercentag of pyrrhotite in the matrix although it is hard to

differentiate from the arsenopy rite as it has only a slightbronze tinge to it The presence of pyrrhotite is best detected

through its magentic affinity Only trace amounts of chalcopyriteappear to be present in the mineralization at the main showingThese app ar as small isolated blebs within the the sulfide mass

or on the margins of fracture viens Chalcopyrite does however

appear to be one of the trace minerals associated with higharsenic gold values from the work done in the previous RhyoliteResources survey

Another significant trace mineral indicated by the

Rhyolite survey is elevated values of bismuth A petrographicstudy on sample 87M2L is included in Appendix B It identifies

possible bismuth tellurides as being presentThe petrographic study conducted by Vancouver

Petrographics also reported the presence of fine grains of free

gold within the arsenopyriteSample MS 02 88 showed an elevated value 19 ppm in

Scandium which is anomalous Scandium has recently been the

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Significant Values arei

Year Sample No Au oz t Ag oz t As Width I1973 108 96 24 3 inches

1973 109 38 tr 4 ft

1973 110 20 1 50 4 01 4 ftII

1973 111 22 tr 5 ftI

1973 Campbell 1 76 44 29 51 GrabI

1973 Campbell 2 1 52 74 33 83 Grab Iddh 2 220 22 4 99 94 5 95 5ft I

1981 0233 108 01 I0234 532 09 I0235 905 90

I

0236 011 01 I

0237 242 50

1983 rx6 439 55

1987 87M1L 228 07

87M2L 878 06

ZR 170 9820ppm

0ZR 175 38500ppmAMS 160 1675ppmAMS161 7150ppmZR 174 345ppm

1988 MS04 BB B16 20

FMSOl 88 865ppmMS02 BB 220ppmMS03 BB 50ppm

focus of exploration in Europe It is used in the electronics

industryThe matrix surrounding the fissure viens contains upto

10 finely dissem nated arsenopyrite and white pyrite The

contacts of the fissure veins themselves are sharp and show no

sign of contamination by the wall rock The fissures are short

in length and appear to be discontinuous At the mainshowing 22

lenses were detected within the 15 vertical foot exposure

o

REFERENCES

Assessment Reports 4572 11114 11994

GSC Open File 1163

GSC Map 2103 1925

CONCLUSIONS

While the lenses of sulfide at the main showing are

discontinuous and small within themselves their abundance and

good gold values may lead to a bulk tonnage target The deposit

appears to be structurally controlled and oriented in a

north south direction Interpretation of the data gathered

previously by Rhyolite Resources along with the gossanous areas

detected on during the course of this survey indicate the

potential for other mineralized zones parrellel to the main

o 4

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showing Zon tion within the intrusive may be signifiG nt id

in locatiqn of other showingsA strong structural fabric is evident from the air as

shown in the photographs in Appendix A The terrain appears to

have been ifaulted in at least two dominent directions which makes

correlation of the existing showings difficult without further

detailed surface work These structures may be the source of

silicific tion observed in some of the outcropThis survey did determine that the property merits

continued exploration Within its limited scope no new showingswere located on the surface A much more detailed survey is

required

o

RECOMMEND D PROGRAM

1

2

3

4

5

6

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0

staking of a minimum of 36 units as protection groundGrid to be constructed over the entire property with

lines at 100m intervals and stations at 20 m intervals

or less

M gnetometer and VLF ResistivityI

c mpleted over the gridSeil sampling for Au Cd Bi As Ag base metals to

be carried out over anomalous geophysical targetsG ological Mapping with regard to structure

alteration of the intrusive

C6nstruction of an orthophoto base base

require having the area flown if this is

y be advisable to have this done

a rbourne geophysical surveyBlanket sampling of the Main Showing and the gossanousareas detected in this survey

surveys to be

and

map This may

necessary it

with a combined

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j

STATEMENT OF EXPENDITURES

PINE WOODS MINERAL CLAIMS

LABOURM L SERACK Aug 10 13 1987 April 27 29 1988 incl

7 days x 200 00 per dayO Stowell Aug 10 13 1987 4 days x 125 00 per day

CAMP COST 3 days x 2 men x 35 00 per dayVEHICLE 4 days x 50 00 per day

Fuel Vancouver Kliniklini returnFIELD SUPPLIES SECTIONS ETC

VANCOUVER PETROGRAPHICStwo sections submitted by St Joe Canada

ASSAYS

M L Serack Chemex Labs

MineQuest Explorations 8 samples at 13 75 each

SUB TOTAL

REPORT

TOTAL

6

1400 00

500 00

210 00200 00

123 0069 00

120 00

158 25

11O 00

2890 25

325 00

3 215 25

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oSTATEMENT OF QUALIFICATIONS

I MARJORIE L SERACK of 25 2556 Whitely Court North

Vancouver British Columbia VlL 4P6 do hereby state

1 I hold a B Sc Honours Degree in Geology from the

University of Saskatchewan 1979

2 I have been practicing my profession for the pastnine years being employed by such firms as

Saskatchewan Mining Development Cominco Limited and

Lornex Mining Corporation

4 I am presently self employed as a consultinggeolgist

5 I retain no interest in the Pine or the Woods miningclaims

n

GeologistJune 10 1988

o7

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APPENDIX A

PHOTOGRAPHS

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Sa Dle site 87M1L showin Arsenopyrite rusty color in fractured

diorite to icrodiorite

Pine bods Property looking North Bast shows the dominent structural

texture seen on uch of the property lo r left hand corner

A 2

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CREEK SHOWING gossan as observed frolllthe air The photographwas taken facing north The creek is at the lower

margin of the pidure

NORTH SHOWING gossanous areas as seen from a distance The photowas taken facing North

A IFV1c

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NORTH SHQ ITNG Photographs taken clos er to the gossanous

ve etation anomalies shown on the previouS page

A 4

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APPENDIX B

PETROGRAPHIC RESULTS

o

I

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l do

3 1

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if JlCOlfel

P o BOX 39

BBB7 N SH STREET

FORT LANGLEY B C

VOX lJOJAMES VINNELL II or

JOHN G PAYNE I h n Ucol011ist

pHONE 604 8Jl8013Z3

InvOlce 734

May 1988Repo t for Dave Kennedy

st Joe canada Inc

419 553 Granville street

VANCOUVER B C v6C lX6

sample sub massive Arsenopy ite containing Gold in Assay

summa yp L F6 ct lA p1

The host ock is a st ongly altered assemblage dominated by

qua tz and se icite with much less chlo ite and minor Ti oxide It

contains abundant patches of fine to coa se g ained arsenopy ite

which is st ongly b ecciated along one side of the sample Native

gold and a few unknown mine als occu with a senopy ite the unknoWn

mine als may in part contain Bi and Te

lfGtfr

PAI1ATIO FOR MICROSPETROGRAPHICREPORTS SPECI LGEOLOGY FIELD STUDI

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B 2

Altered Rock Quartz sericite Chloritel with Abundant

patches of Arsenopyrite with Native Gold and unknown

phases possibly of ni Te and Ag

The rock contains patches of arsenopyrite enclosed in a stronglyaltered assemblage of quartz sericite with much less chlorite and

Ti oxide Native gold and a few unknown phases occur with

arsenopyrite Chalcopyrite and pyrite are concentrated in fractures

in brecciated arsenopyrite

sampleM

quartzsericite

chloriteTi oxidearsenopyrite

20 2512 15

3 4

0 555 60

Mineral X

chalcopyritepyritenative goldBi Te Ag minerals

0 1minortrace

trace

trace

The host rock is dominated by very fine grained quartz intergrownwith patches of extremely fine to locally very fine grained sericite

Locally quartz forms fine to medium grained patches mainly adjacentto arsenopyrite These arsenopyrite grains commonly have euhedral

terminations against quartz Chlorite forms ragged flakes and patchesaveraging 0 2 0 5 mm in size It is light greyish green in color

Associated with many chlorite patches are patches of extremely fine

grained Ti oxide

Arsenopyrite forms very fine to medium grained aggregates It is

brecciated very strongly along one side of the sample locallychalcopyrite and pyrite occur in fractures up to 0 01 mm wide in these

brecciated zones

Chalcopyrite also forms a very few lensy inclusions up to 0 06 rom

long in arsenopyriteIn sample lA Mineral X forms an anhedral grain 0 8 rom across

associated with arsenopyrite It is moderately soft light grey with

a low reflectivity and moderate anisotropism with a distinctive blue

color It has one good cleavage and is altered slightly along this

and moderately along grain borders to secondary high relief minerals

It may be stibnite or a more complicated sulfo salt of bismuth or

leadIn Sample lB native gold occurs in a few patches enclosed in

arsenopyrite one grain 0 05 mm long occurs interstitial to very fine

grained submosaic arsenopyrite A few occur in a cluster of

irregular grains averaging 0 005 0 02 mm in size enclosed in a medium

grain of arsenopyrite Associated with native gold in this cluster

are a very few grains averaging 0 005 mm in size of two phases one

cream colored and one grey colored these may be Bi tellurides

Another cluster up to 0 15 mm long of inclusions in a coarse

arsenopyrite grain consists of three or four phases including two

minerals which may be Bi and or Ag tellurides and minor native gold

Grain size averages 0 005 0 02 mm One phase forms a few grains from

0 01 0 02 mm in size it has a moderate reflectivity masked by very

poor polish and creamy grey color Another forms one grain 0 01 rom

across it has a good polish high reflectivity and a greyish white

color Another grain 0 02 mm across appears to be sphalerite with

abundant exsolution inclusions of chalcopyrite Native gold forms one

elongate grairi 0 015 mm in length

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Appendix B B 3

nSAMPLE MS Ol 88

LOCATION MainshDwing

HANDSAMPLE DESCRIPTION

Fine grained hDrnblende DiDrite Light grey matrix weathers

buff brDwn Grain size averages 1 rom CDntains up tD 2 very fine

grained 1 rom sulfide grains disseminated thrDugh DUt matrix SDme

of the sulfides appear to be arsenopyrite Fine fractures are healed

with quartz and feldspars Fractures are 1 rom thick

o

CUT SECTION

up tD 2 disseminated honey tD brown resinDus sphaleriteoccuring as iSDlated grains up tD 2rom in diameter The matrix

cDntains up to 25 fine crystaline translucent clear to cream colored

quartz Trace translucent blue mineral possibly apatite occurs in the

ground mass

The predominent mafic is hornblende which occurs up to 5 of

the matrix Minor brown biotite is also present The sample also

contains trace magnetiteThe dominent sulfide appears tD be pyrrhotite which locally

forms patches up to 2 of the matrix Arsenopyrite is also presentwith the pyrrhotite Grains Df arsenopyrite display exolution

textures cDnsisting of pits and elongate blemishes Arsenopyrite is

mDre evident in the quartz dominated areas along poorly defined

lineationsOne grain of what appears to be sphene was present in the

sample examined

AlsD observed was 1 grain of a highly reflectant brightsilvery metallic mineral with a rippled surface

ULTRAVIOLET LIGHT

The sample was examined under ultraviolet light No reactive

minerals were detected

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Appendix B B 4

oSAMPLE ME 02 88

LOCATION At creek level 7 m downstream from DDH 3

HANDSAMPLE DESCRIPTION Microdiorite oontaining gnash vienlets of

arsenopyrite and disseminations of arsenopyrite Sample appears to

have been silicified in places It appears as a mottled rusty orangegrey color in outcrop It contains 7 mafics in an equigranularground mass The sample is magnetic 2 very fine grained sulfidesoccur along hairline fractures cutting the sample

CUT SECTION The mafic mineral appears to be dominently hornblendebut occassional flakes of red brown biotite are also present In

places the hornblende crystals are fractured and the fractures have

been healed with a sulfide assemblage

The sulfides consist of subround to irregular isolated blebsof arsenopyrite and pyrrhotite Trace white cubic pyrite bearing a

faint yellowish tinge is also present Occasional grains of

chalcopyrite are also apparent as are occasional grains of red brown

resinous sphalerite A bright silvery mineral was also observed but

unidentified

A fine grained metallic steel blue sulfide which formed rods

in a semi radiating texture were also observed associated with mafic

clots In some places these give the sample a feather like texture

where they were associated with quartzA single trace grain of apatite was observed

o ULTRAVIOLET LIGHT

There were no ultraviolet reactive minerals present in this

sample when exposed to ultraviolet radiation

o

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Appendix B B 5

oSAMPLE MS 03 88

LOCATION 30 ro down stream from 87M1L at creek level near vertical

fault gouge zone Out crop in creek weathers to a bright orange and

brown gossanous colour

HANDSAMPLE DESCRIPTION Mottled white and grey black equigranulardiorite with upto 2 mafics CDntains up tD 3 sulfides disseminated

as clDts The matrix has been stained Drange by the DxidatiDn Df

sulfides In places it is cut by hairline fractures which have been

annealed with sulfides The sample is strDngly magnetic

CUT SECTION This sample cDntains very fine grained sulfides of which

arsenopyrite makes up 1 and the remaining 2 is cDmposed of lightbronze to grey bronze cD1Dred pyrrhDtite fDrmed in irregular masses

and clots The pyrrhotite is magnetic Associated with it is a fine

grained cubic black sulfide mineral which may be tetrahedrite Dr

tennantite The sulfides tend tD be associated with mDre mafic rich

areas of the sample Crystal size is generally 1 rom in diameter

Fractures are 1 2 rom wide and have been generally fi ed with

quartz and sulfide minerals giving the fracture a vuggy appearanceTrace stibnite Dccures in the fractures 5 pyrite Dccures

as a bright yellDw sulfide generally associated with fractures as does

traces of galenaTrace fine grained hDney tD brown resinous sphalerite Dccurs

as disseminations and in fractures

o A dendritic bright silver metalic mineral as sketched below

was seen tD occur in this sample and may be a silver mineral

The sulfides appear tD follow lineatiDns and are assDciated

with more mafic bands in the matrix The sample appears tD have been

fractured and annealed in at least two directiDns The mDst prDminentfractures intersect at 20 degrees to each Dther

ULTRAVIOLET LIGHT

No UltraviDlet reactive minerals were nDted when this samplewas submitted tD ultraviDlet light

oM

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Appendix B B 6

oSAMPLE 87112L

LOCATION Main showing 10 ft above creek level and 5 ft verticallyabove DDH 3 on a narrow arsenopyrite showing up to 10 em thick Grab

sample from subhorizontal upper vein

HANDSAMPLE DESCRIPTION Massive arsenopyrite with up to 2 quartzoccuring as fracture filings Sample has the appearance of crushed

and fractured crystal mush Sulfides weather to a light buff brown

color band with in fine grained diorite which weathers to cream brown

in color Sample is weakly magnetic in spots

o

CUT SECTION Predominently arsenopyrite composed of ragged crystalsup to 2 mm in diameter Crystals show signs of having been fractured

prior to healing with quartz Arsenopyrite is barely distinquishablefrom pyrrhotite which has a faint bronze coloration to it There

appears to be up to 2 pyrrhotite contained within the arsenopyritematrix Pits are observable in the arsenopyrite grains and may

indicate inclusions Possible very fine grain of gold observable

Sample also contains a trace grey black metallic cubic to

rectangular crystals The sulfide is very fine grained lmm diameter

and occurs in hairline frac ures cutting the arsenopyriteTrace to 1 stibnite randomly dispersed or occuring in small

clots or aggregatesTrace chalcopyrite lmm diameter as discrete grains

Quartz forms 3 of the matrix It also occurs as crystalsalong fractures and results in a vuggy texture The translucent

euhedral crystals are up to l 3mm in length and 1 mm in dia eter

ULTRAVIOLET LIGHT

No ultraviolet reactive minerals were noted when this samplewas submitted to ultraviolet light

o

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Appendix B B 7

oSAMPLE MS 04 88

LOCATION Arsenopyrite float from creek at main showing

HANDSAMPLE DESCRIPTION Arsenopyrite containing a framboidal silverymineral associated with pistachio green alteration mineral Sampleappears to have formed as a frothy crystal mush Contains crystalsof quartz up to 1 cm in length and 4cm in diameter The crystalsare subeuhedral and milky white in color The arsenopyrite crystalsalso appear elongated subparrallel to the long dimension of the

quartzThe sulfide crystals are fractured and have been annealed with

quartz

SAMPLE FMS 01 88

LOCATION from creek at main showing

HANDSAMPLE DESCRIPTION Dark grey to black microdiorite in contact

with quartz viening contain ng irregular blebs of pyrrhotite upto 1 cm

in diameter The pyrrhotite is distinquishable from the blebs of

arsenopyrite also present in the sample by its strong magnetism faint

bronze color and slightly larger masses

The microdiorite itself is moderately magnetic

o CUT SECTION Fine grained 1mm equigranular groundmass composed of

approximately 3 quartz 5 serecite up to 15 hornblende 70 dark

blue grey to grey feldspars

Sulfides are variably distributed within the groundmass and

make up approximately 5 of it The dominent sulfides appear to be

pyrrhotite and minor pyrite Sulfides are more prevalent near openvugs or fractures and are associated with quartz as fillings A steel

blue grey sulfide was seen to occur with bronze pyrrhotite Because

of the extremely fine grained nature of the sulfide it is impossibleto identify at this magnification

The sample also contins a trace amount of brown resinous

sphalerite concentrated mainly along the quartz microdiorite

contact

o

Page 26: arsenepyrite pyrrhetite bearing geld aleng prespecting ...

oAPPENDIX C

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