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Occurrence Details


Occurrence Number
106D 039
Occurrence Name
Grey Copper Hill
Occurrence Type
Hard-rock
Status
Drilled Prospect


General Information

Secondary Commodities: copper, zinc, silver, lead, gold
Aliases: Taf, Jet, Pickney
Deposit Type(s): Manto Polymetallic Ag-Pb-Zn, Vein Polymetallic Ag-Pb-Zn+/-Au
Location(s): 64.436260 N, -135.255460 W
NTS Mapsheet(s): 106D06
Location Comments: Coordinates supplied by ATAC 2019
Hand Samples Available at YGS: No
Last Reviewed: May 22, 2019

Capsule

Last Updated: May 22, 2019
Work History
 
Staked as the Grey Copper King claim (14902) by R. Fisher and the Silver Queen cl (14901) by L.B. Erickson in October, 1923. The Grey Copper King (Fractional) cl (16527) was added immediately west of the Silver Queen cl in September, 1924 by J. McCloskey.
 
In 1927, Langham and Forrest drove a 6.1 m adit on the Grey Copper King Fraction, Fisher drove a 3 m adit on the Grey Copper King claim and a boundary dispute resulted in a legal survey in August, 1927. A 7.3 m adit was driven on the neighboring Dominion claim in 1929.
 
Re-staked as the Mac D cl (61567) in April, 1951 by G. Dickson, who cleaned out the old adits; as Jet cl 1-16 (Y26622) & Fisher cl 17-19 (Y14998) and cl 20-47 (Y27001) in July, 1968 by L. Proctor and P. Versluce, who performed an evaluation survey in June, 1969; as FXE cl 1-16 (Y68390) in August, 1972 by Cypress Resources Ltd; and as Lin cl 1-24 (Y87280) in February, 1974 by Hesca Resources Corporation Ltd., which carried out prospecting and soil sampling, drilled 2 x-ray holes (56.3 m), hand trenched, and opened an old adit later in the year.
 
Re-staked as Silver Hawk cl 1-16 (YA30639) in June, 1978 by Prism Resources Ltd., which performed soil sampling and geophysical surveys in 1978 and more geochemical sampling in 1979 and 1980; and as Nancy Bea cl 1-8 (YA77313) in August, 1983 by H. Moritz, who performed hand trenching in 1984; and as TAF cl 1-16 (YB2079) in February, 1988 by C. Thomas, who did mapping later that year.
 
In October, 1994, D. Hajek re-staked the vein with a series of small claim groups. The actual vein appears to be covered by White cl 9-10 (YB43403). Other claims staked at the same time were Lucky Ace 1-2, Lucky Jane 3-4, Lucky 5-6, Ate 7-8, Blue 21-24, Junniper 25-26, Tarmigan 11-12, and Eat 13-14.

Re-staked as Pickney cl 1-4 (YC39575) in August, 2005 by C. Thomas. Metallic Minerals Corp. optioned from C. Thomas in the fall of 2017.
 
Regional & Property Geology
 
The occurrence area is situated on the summit of Grey Copper Hill, northeast of the confluence of Police Creek and Carpenter Creek, approximately 33 km due north of McQuesten Lake. The area was regionally mapped by L. Green (1972) of the Geological Survey of Canada in 1961 as part of a helicopter-supported party known as Operation Ogilvie. 

The occurrence is underlain by Paleoproterozoic Gillespie Lake Group (silty dolostone, siltstone, shale with lessor conglomerate) in the northern domain and Upper Cambrian to Devonian Bouvette assemblage (limestone, dolomite, conglomerate, black shale and dolostone) in the southern domain. A small section in the southern corner of the occurrence area is underlain by Cambrian to Silurian Menzie Creek formation (Marmot Group) volcanics.
 
At the occurrence, tetrahedrite was found with pyrite in siderite veins on the Grey Copper King claim, where a chip sample assayed 1,782.8 g/t silver across 40 cm. Wall rocks are thin-bedded chlorite schist and quartzite likely belonging to the Marmot assemblage that are cut by (Triassic in age ?) small sills or dykes. Float was found farther uphill on the King Tut and Silver Queen claims and tetrahedrite float assaying up to 37,713.3 g/t silver was rumored to come from this area but was never substantiated.

Mineralization & Results 

Slightly mineralized quartz vein material containing siderite, chalcocite, sphalerite, and chalcopyrite was noted at the old workings in 1969. Specimens taken from the old adit by Prism Resources assayed 4.9% copper and 2,057 g/t silver, while a specimen of apparently unmineralized yellowish dolomitic sandstone assayed 58.3 g/t silver and 0.6% lead and a specimen of clean tetrahedrite float assayed 6 994.1 g/t silver.
 
A weak copper anomaly drilled in 1974 is underlain by altered greenstone dykes and sills that are cut by widely spaced, narrow quartz and calcite veins carrying disseminated chalcopyrite.

 

Location Map

Last Updated: Dec 19, 2019

Work History

Year Work Type Comment
2019 Geochemistry: Rock
2018 Geochemistry: Rock
2018 Geochemistry: Soil
2018 Geology: Bedrock Mapping
2018 Other: Prospecting
1988 Geochemistry: Soil
1988 Geology: Bedrock Mapping
1988 Other: Prospecting
1988 Trenching
1984 Trenching: Hand
1980 Geochemistry: Soil
1979 Geochemistry: Soil
1979 Geology: Bedrock Mapping
1978 Geochemistry: Soil
1974 Development, Underground: Rehabilitation Opened an old adit.
1974 Drilling: Diamond Two holes, 56.4 m. X-ray size holes.
1974 Geochemistry: Soil
1974 Other: Prospecting
1974 Trenching: Hand
1969 Other: Property Evaluation
1951 Development, Underground: Rehabilitation Cleaned out old adits.
1929 Development, Underground: Drifting/Raising Drove adit 7.3 m on Dominion claim.
1927 Development, Underground: Drifting/Raising Drove adits ~ 9.15 m long on the Grey Copper King and fractional claim.
1927 Other: Surveying Carried out to solve boundary dispute.

Regional Geology - Terrane

Group: Ancestral North America
Affinity: W Laurentia
Name: North America - platformal strata
Realm: Laurentia


Regional Geology - Bedrock

Supergroup:
Group/Suite:
Formation: Bouvette
Member:
Terrane: Laurentia
Period Max: Cambrian
Age Max: 500 MA
Period Min: Devonian
Age Min: 392 MA
Rock Major: dolostone
Rock Minor: shale/limestone/conglo
Reference: Green & Roddick (1972) - GSC Map 1282A
Geological Unit (1M): CDB
Geological Unit (250K): CDB1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
097241 2018 2018 Assessment Report Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology
096939 2015 Technical Report and Preliminary Economic Assessment for the Tiger Deposit, Rackla Gold Project VTEM - Airborne Geophysics, ZTEM - Airborne Geophysics, Mill/Concentrator Construction - Development, Surface, Tailings Pond - Development, Surface, Diamond - Drilling, Rock - Geochemistry, Soil - Geochemistry, Gravity Survey - Ground Geophysics, IP - Ground Geophysics, Resistivity - Ground Geophysics, Metallurgical Tests - Lab Work/Physical Studies, Data Compilation - Pre-existing Data, Data Compilation - Pre-existing Data, Environmental Assessment/Impact - Studies, Preliminary Economic Assessment - Studies, Resource Estimate - Studies 150 26846.60
096607 2012 Assessment Report Describing Metallurgical Testing, Wildlife Monitoring, Heritage Evaluation, and Water Quality and Climate Monitoring Surveys Water - Geochemistry, Metallurgical Tests - Lab Work/Physical Studies, Environmental Assessment/Impact - Studies, Heritage/Archeological - Studies
096597 2012 Assessment Report Describing Geochemical Sampling, Auger Sampling, Geological Mapping, Diamond Drilling, and Geophysical Surveys Air Strip - Development, Surface, Auger - Drilling, Diamond - Drilling, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, EM - Ground Geophysics, Gravity Survey - Ground Geophysics, Magnetics - Ground Geophysics, Prospecting - Other, Hand - Trenching 172 37340.37
095938 2011 Assessment Report Describing Geochemical Sampling, Geological Mapping and Remote Sensing Surveys at the Rackla Gold Property Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, LIDAR - Remote Sensing, Heritage/Archeological - Studies
095721 2010 Assessment Report Describing Geophysics, Soil Geochemistry and Diamond Drilling at the Rau Property Electromagnetic - Airborne Geophysics, Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics, Magnetic - Airborne Geophysics, Diamond - Drilling, Diamond - Drilling, Drill Core - Geochemistry, Soil - Geochemistry, Soil - Geochemistry, Downhole Survey - Ground Geophysics, Gravity Survey - Ground Geophysics, IP - Ground Geophysics 170 36900.84
092670 1988 Assessment Report on the Taf Claims Rock - Geochemistry, Prospecting - Other
090649 1980 Soil Geochemistry of the Silver Hawk Claims Soil - Geochemistry, Prospecting - Other
090568 1979 Geology of the Silver Hawk Claims Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other
060186 1969 Property Evaluation Report on the Jet Claim Group Cursory Property Visit - Other, Prospecting - Other

Related References

Number Title Page(s) Document Type
ARMC008089 Castle Ridge detail area map - 1974 Geoscience Map (General)
ARMC011912 Geology compilation map - Castle Ridge detail area - Reef project - Figure 8 Geoscience Map (Geological - Bedrock)
ARMC008073 Geochemical values map - Reef project - Castle Ridge detail area - Figure 9 Geochemical Map
ARMC008074 Castle Ridge geochem map - Reef project - Figure 21 Geochemical Map
ARMC008088 Castle Ridge detail area map - 1976 Geoscience Map (General)
2003-9(D) Yukon Digital Geology (version 2) Open File (Geological - Bedrock)
1990-3 Geology of 106D/8 & 7 (East Half) Map Areas Open File (Geological - Bedrock)
10 Geology and Mineral Occurrences of Slats Creek, Fairchild Lake and "Dolores Creek" Areas, Wernecke Mountains (106D/16, 106C/13, 106C/14), Yukon Territory Bulletin
Citations
Blackburn, L.R. and Haid, T. 2018. 2018 Assessment Report on the Grey Copper Hill Property (Pickney 1-4 claims), Metallic Minerals Corp. AR# 097241.
Cockfield, W.E.,1924. Summary Report, 1924, Part A, Upper Beaver River Area, Mayo District, Yukon. Geological Survey of Canada, pp. 22-30.
Green, L.H., 1972. Geology of Nash Creek, Larsen Creek and Dawson Map-Areas, Yukon Territory. Geological Survey of Canada, Memoir 364, p. 133 - 134.
Mineral Industry Report, 1969-70, p. 22.

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