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Occurrence Details

Occurrence Number
105D 220
Occurrence Name
Occurrence Type

General Information

Secondary Commodities: copper
Aliases: Whitehorse Copper
Deposit Type(s): Skarn
Location(s): 60.5775 N, -134.928940 W
NTS Mapsheet(s): 105D10
Hand Samples Available at YGS: No


The Whitehorse Copper Belt is located west of Whitehorse and contains 30+ mines, deposits and showings. Many of the occurrences in the Copper Belt are skarns. The skarns form on or near the contact between the Whitehorse batholith and the Lewes River group. The Whitehorse batholith is commonly a grey coarse-grained hornblende granite and ranges from quartz monzonite to granodiorite to diorite. The Lewes River group contains numerous different rock types, most importantly of which is the limestone group, which is essential in the formation of skarns in the area.  A small number of occurrences within the Copper Belt are vein and/or replacement and occur within the Whitehorse batholith granite.

The magnetite rich skarn occurs at the contact between the Lewes River limestone and the Whitehorse batholith hornblende rich granite. The contact zone is marked by irregular zones of coarsely (up to 6 inches) crystalline black actinolite and grey clinopyroxene. Magnetite, epidote and chalcopyrite are also present. Assays returned 0.15% Cu, and 49.86% Fe.

Location Map

Regional Geology - Terrane

Group: Intermontane
Affinity: W Laurentia
Name: Stikinia
Realm: peri-Laurentian

Regional Geology - Bedrock

Group/Suite: Whitehorse
Period Max: Cretaceous
Age Max: 112 MA
Period Min: Cretaceous
Age Min: 105 MA
Rock Major: quartz monzonite/granite/monzonite/syenite/granodiorite/quartz diorite
Rock Minor: ash
Reference: Wheeler (1961) - GSC Map 1093A
Geological Unit (1M): mKW
Geological Unit (250K): mKqW

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
092025 1974 [Proposed 1974 Exploration of the Cowley Park and War Eagle Properties] Property Evaluation - Other
061172 1974 [Proposed 1974 Exploration of the Cowley Park and War Eagle Properties] Property Evaluation - Other
062018 1973 Preliminary Report on Geological Control to Ore Distribution in the Whitehorse Copper Belt Reverse Circulation - Drilling, Bedrock Mapping - Geology, Petrographic - Lab Work/Physical Studies 665 5555
062227 1966 An Evaluation of the New imperial Mines Ltd. Feasibility - Studies

Related References

Number Title Page(s) Document Type
1984-1 The Whitehorse Copper Belt - A Compilation Open File (Geological - Bedrock)
Kindle, E.D., “Summary of Research: Field, 1962”; Geological Survey of Canada, Paper no. 63-1, 1963, (Open Access)

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