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Occurrence Details


Occurrence Number
105B 044
Occurrence Name
Irvine
Occurrence Type
Hard-rock
Status
Showing


General Information

Secondary Commodities: lead, zinc, silver
Aliases: Angie, Com, Source
Deposit Type(s): Skarn Pb-Zn
Location(s): 60.639440 N, -131.191940 W
NTS Mapsheet(s): 105B11
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Noted by GSC in 1955 and investigated with mapping and sampling by Wolf Lake JV (Ashland O Can L; Rayrock ML; Can Ind G & OL; Caltor Synd) in 1971. First staked as Angie cl (83135) in Jul-Sep/74 by Hudson Bay Mg, which explored with mapping, geochem sampling, hand trenching and 3 holes (140.5 m) in 1974 and more sampling, an IP survey and 4 holes (361.2 m) in 1975.
Restaked as Com cl (YA35720) in Nov/78 by the Wolf Lake Project (Comaplex Res Int L and Dayton Creek Silver ML). The Source cl (YA67272) were tied on to the south in Sep/81 by a joint venture between SEREM L and Samim Can L, which explored with prospecting in 1981 and geochemical sampling and mapping in 1982.
Restaked as SHA cl (YA73451) in Jun/85 by Shakwak ECL in a joint venture with Nordac Mg Corp. Shakwak performed mapping and geochem sampling in 1985 and bulldozer trenching in 1986 and 1987 under an option. Nordac changed its name to Big Creek Res L in 1987.

Capsule Geology

Galena and sphalerite occur with quartz and fluorite in veinlets and disseminated in diopside-magnetite skarn that has formed in an Early Paleozoic schist-gneiss sequence, near a granodiorite stock. The best assay obtained in the 1974 drilling was 0.05% Zn, 0.07% Pb and 4.1 g/t Ag from 50.0 to 50.4 m in Hole A1 on the Angie 4 claim.
Scheelite occurs in a skarn developed in rocks of the Late Proterozoic-Early Cambrian Hyland Group near the margin of the Cassiar Batholith on the Source cl. Specimens of fairly massive fluorite gave assays of up to 0.8% WO3, in 1971, while a specimen of sphalerite-bearing diopside-pyrrhotite skarn assayed 3.2% Zn, 24.0 g/t Ag and less than 0.1% Pb and Cu.
In 1985, Shakwak reported assays of galena float as high as 3771.3 g/t Ag with 2.5% Pb. Most 1986 trenches failed to reach bedrock and those that did returned only weakly anomalous silver and lead values. The best assays were from float boulders exposed on trench walls. Specimens of the float contained up to 10% galena and sphalerite and assayed up to 202.3 g/t Ag.

References

GEOLOGICAL SURVEY OF CANADA, Map 55-21.

HUDSON BAY EXPLORATION AND DEVELOPMENT COMPANY LTD, Apr/75. Assessment Report *#091104 by R.T. McIntosh.

MINERAL INDUSTRY REPORT, 1974, p. 150; 1975, p. 160.

SEREM LTD, Aug/82. Assessment Report *#091074 by M.A. Stammers.

SHAKWAK EXPLORATION COMPANY LTD, Jul/86. Assessment Report *#091827 by R.C.R. Robertson.

SHAKWAK EXPLORATION COMPANY LTD, Oct/86. Assessment Report #091921 by G. Davidson.

SHAKWAK EXPLORATION COMPANY LTD, Apr/87. Assessment Report *#091935 by G.S. Davidson.

YUKON EXPLORATION 1985-86, p. 122-123; 1987, p. 78.

YUKON GEOLOGY AND EXPLORATION 1979-80, p. 149; 1982, p. 100.

Location Map

Last Updated: Aug 28, 2018

Work History

Year Work Type Comment
1987 Trenching: Mechanical
1986 Trenching: Mechanical
1985 Geochemistry: Soil Limited soil and some rock sampling.
1985 Geology: Bedrock Mapping
1982 Geochemistry: Silt
1982 Geology: Bedrock Mapping
1981 Other: Prospecting
1975 Drilling: Diamond Four holes, 361.2 m.
1975 Geology: Bedrock Mapping
1975 Ground Geophysics: IP
1975 Geochemistry: Soil
1974 Drilling: Diamond Three holes, 445.3 m.
1974 Geochemistry: Soil
1974 Geology: Bedrock Mapping
1974 Trenching: Hand
1971 Geology: Bedrock Mapping
1971 Geochemistry: Soil

Regional Geology - Terrane

Group: Ancestral North America
Affinity: W Laurentia
Name: Cassiar
Realm: Laurentia


Regional Geology - Bedrock

Supergroup: Windermere
Group/Suite: Ingenika
Formation: Swannell/Tsaydiz
Member:
Terrane: Cassiar
Period Max: Cryogenian
Age Max: 725 MA
Period Min: Ediacaran
Age Min: 550 MA
Rock Major: shale/sandstone/grit/quartzite
Rock Minor: marble/calc-silicate
Reference: Murphy (1988) - YGS OF 1988-1
Geological Unit (1M): PCI
Geological Unit (250K): PCI1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
091935 1987 Assessment Report Silver Creek Property Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other, Backhoe - Trenching
091921 1987 Assessment Report Silver Creek Property Rock - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other, Backhoe - Trenching
091827 1986 Assessment Report Trenching GRA 1-42, REV 1-16 and SHA 1-147 Mineral Claims Gravel Creek Area Rock - Geochemistry, Prospecting - Other, Handblast - Trenching
091074 1982 Assessment Report Geological and Geochemical Report on the Source 1-24 Mineral Claims Rock - Geochemistry, Silt - Geochemistry, Bedrock Mapping - Geology
090604 1979 Report of Investigations on the Com # 21-26 Claims Prospecting - Other

Drill Core at YGS Core Library

Number Property Year Drilled Core Size Photos Data
A-4 Irvine 1975 AQ 4 1
A-5 Irvine 1975 AQ 10 1
A-6 Irvine 1975 AQ 10 1
A-7 Irvine 1975 AQ 10 1
A-1 Irvine 1974 AQ 0 1
A-2 Irvine 1974 AQ 14 1
A-3 Irvine 1974 AQ 0 1

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