Unnamed Occurrence (ARDF - CR108), Twelvemile Arm, Kasaan Bay, Prince of Wales Island, Ketchikan District, Prince of Wales-Outer Ketchikan Borough, Alaska, USA
Location: This occurrence is probably about 0.2 mile west of the top of hill 2150 and about 0.5 mile west-southwest of the center of section 15, T. 75 S., R. 83 E.
Geology: At this occurrence, Clark and others (1970 [OF 417] report pyrite and minor chalcopyrite in greenschist of the Wales Group of Late Proterozoic and Cambrian age (Eberlein and others, 1983; Brew, 1996).
Workings: Only brief examination by government geologists.
Age: Pyrite and chalcopyrite occur in greenschist of the Wales Group of Late Proterozoic and Cambrian age.
Commodities (Major) - Cu
Development Status: None
| Chalcopyrite|| Pyrite|
2 entries listed. 2 valid minerals.
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Brew, D.A., 1996, Geologic map of the Craig, Dixon Entrance, and parts of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2319, 53 p., 1 sheet, scale 1:250,000. Clark, A.L., Berg, H C., Grybeck, D.J., Ovenshine, A.T., and Wehr, Raymond, 1970, Analyses of rock and stream-sediment samples from the Craig B-3 quadrangle, Alaska: U.S. Geological Survey Open-File Report 417, 100 p. 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. Eberlein, G.D., Churkin, Michael, Jr., Carter, Claire, Berg, H.C., and Ovenshine, A. T., 1983, Geology of the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-91, 52 p.
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