Alaska
Prospect

Four Bear

Alaska, United States
ZincLeadCopperGoldSilverArsenicMercury
⌖ Show on mapUSGS source ↗
Commodities
PrimaryZinc, Lead, Copper, Gold, Silver
SecondaryArsenic, Mercury
Deposit
Model53: Porphyry Cu78: Porphyry Cu-Au
Materials
Ore mineralsPyrite, Sphalerite
GangueCalcite, Opal, Quartz, Tourmaline
Geology
AlterationAlteration ranges from propylitic to argillic to sericitic, along with local silicification.
Economic & production
Development statusProspect
Identification
Deposit ID10308093
Alternate namesPmrgx-28
RegionNA
Data scoreB
Coordinates55.60623, -161.10244
References
Trujillo, R.S., Farnham, S., and Anderson, G.,1983, Exploration and evaluation of precious metal potential of the Aleut Corporation 14(h)8 lands, southwest Alaska: Resource Associates of Alaska report, 25 p., 11 map sheets, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)Freeport Exploration Company, 1985, 1984 report of activities, Canoe Bay joint venture: Freeport Exploration Company, 25 p. (Report held by the Aleut Corporation, Anchorage, Alaska.)Angeloni, L.M., Wilson, F.H., and Sutlet, S., 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-470, 179 p., 1 map sheet, scale 1:250,000.Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.