Copper Hill Prospect, Maybeso Creek, Prince of Wales Island, Ketchikan District, Prince of Wales-Outer Ketchikan Borough, Alaska, USA
Location: The Copper Hill prospect is about 0.6 mile east-southeast of the Puyallup Mine which is named on the USGS 1;63,360-scale topographic map. The prospect is about 0.3 mile west-southwest of the center of section 32, T. 73 S., R. 84 E.
Geology: The deposit at the Copper Hill prospect is a network of chalcopyrite veinlets in sheared greenstone (Brooks, 1902; Chapin, 1918). The property was explored by surface stripping in 1916 but apparently there has been no work on the property since. The greenstone is probably basalt or andesite of the Descon Formation of Silurian and Ordovician age (Herreid and Rose, 1966).
Workings: Only a little surface stripping.
Age: Unknown, other than that the deposit is in Silurian or Ordovician rocks.
Commodities (Major) - Cu
Development Status: None
Deposit Model: Chalcopyrite veinlets in greenstone.
1 entry listed. 1 valid mineral.
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Brooks, A.H., 1902, Preliminary report on the Ketchikan mining district, Alaska, with an introductory sketch of the geology of southeastern Alaska: U.S. Geological Survey Professional Paper 1, 120 p. Chapin, Theodore, 1918, Mining developments in the Ketchikan and Wrangell mining districts: U.S. Geological Survey Bulletin 662-B, p. 63-75. Cobb, E. H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-869, 262 p. Herreid, Gordon, and Rose, A.W., 1966, Geology and geochemistry of the Hollis and Twelvemile Creek area, Prince of Wales Island southeastern Alaska: Alaska Division of Mines and Minerals Geologic Report 17, 32 p.
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