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Occurrence Details


Occurrence Number
105D 226
Occurrence Name
Spring Creek
Occurrence Type
Hard-rock
Status
Prospect


General Information

Secondary Commodities: copper
Aliases: Whitehorse Copper
Deposit Type(s): Skarn
Location(s): 60.677980 N, -135.125550 W
NTS Mapsheet(s): 105D11
Hand Samples Available at YGS: No

Capsule

The Whitehorse Copper Belt is located west of Whitehorse and contains 30+ mines, deposits and showings. By 1900, most of the important deposits had been discovered and the first small ore shipment was made that year. 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. 

At Spring Creek, the contact between the Lewes River limestone and Whitehorse batholith granite is marked by a skarn zone, which is up to 100 feet (30 m) wide in places. The skarn contains tremolite, garnet and epidote and mineralization includes malachite, azurite, bornite, chalcocite and chalcopyrite.

Location Map

Last Updated: Mar 27, 2019

Work History

Year Work Type Comment
1980 Drilling: Diamond 7 holes completed
1980 Geochemistry: Drill Core

Regional Geology - Terrane

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


Regional Geology - Bedrock

Supergroup:
Group/Suite: Lewes River
Formation: Aksala
Member: Mandanna
Terrane: Stikinia
Period Max: Triassic
Age Max: 204 MA
Period Min: Triassic
Age Min: 200 MA
Rock Major: shale/sandstone/conglo
Rock Minor: siltstone
Reference: Hart & Radloff (1990) - YGS OF 1990-4
Geological Unit (1M): uTrAK
Geological Unit (250K): uTrAK3

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
090823 1980 [Diamond Drill Log - Whitehorse Copper Belt] Diamond - Drilling, Drill Core - Geochemistry 7 1208.83
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
091123 1964 Summary of assessment work for 316 claims Diamond - Drilling 46 3652.57

Related References

Number Title Page(s) Document Type
090823 [Diamond Drill Log - Whitehorse Copper Belt] Assessment Report
1984-1 The Whitehorse Copper Belt - A Compilation Open File (Geological - Bedrock)
Citations
Kindle, E.D., “Summary of Research: Field, 1962”; Geological Survey of Canada, Paper no. 63-1, 1963, https://doi.org/10.4095/121464 (Open Access)

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