Mine detail: Bearskin Gulch

Previously called ''

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Location

Lat / long:

56.24927, -158.95245

Resource(M)

Primary:	Molybdenum, Copper, Gold, Silver
Ore:	Chalcopyrite, Gold, Molybdenite, Pyrite

Production

Operation type:	Unknown
Development status:	Occurrence

Geology

Host rock:	Naknek Formation;Naknek Formation;Naknek Formation
Host type:	Siltstone
Associated rock:	Naknek Formation;Naknek Formation;Naknek Formation
Associated type:	Diorite
Alteration processes:	Secondary biotite is present within the copper-bearing areas and beyond. Chlorite is present throughout the area in all rock types. Sericite is present as veinlet selvages and within the higher sulfide areas on the periphery of the system. Other periphery alteration minerals include epidote, kaolinite, montmorillonite, and pyrophyllite.

References

MRDS	A012447
DEP	10001669
Reference	{Deposit:: Fields, E.D., 1977, 1976 Annual report: Alaska search, Chignik area-Bristol Bay region: Bear Creek Mining Company, 44 p., 22 map sheets. (Report held by the Aleut Corporation, Anchorage, Alaska.)}{Deposit:: Cox, D.P., Detra, D.E., and Detterman, R.L., 1981, Mineral resource maps of the Chignik and Sutwik Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF- 1053-K, 2 map sheets, scale 1:250,000.}
Reporter	S.H. Pilcher