Commodities
PrimaryGold, Silver
SecondaryLead, Zinc, Barium-Barite
Commodity typeM
Deposit
Model85: Polymetallic veins105: Epithermal vein, generic
Materials
Ore mineralsChalcopyrite, Galena, Pyrite, Sphalerite
GangueChlorite, Epidote, Magnetite, Specularite
Geology
AlterationRocks are regionally propylitically altered and also hornfelsed as a result of proximity to the Shaler batholith (Simpson, 1986). Highest gold grades are associated with zones of 'pyrite-silica' alteration in 'spotted andesite' (Simpson, 1986).
Economic & production
Development statusProspect
Identification
Deposit ID10003259
MRDS IDA106001
RegionNA
Data scoreB
Coordinates53.51854, -166.96016
References
Drewes, Harold, Fraser, G.D., Snyder, G.L., and Barnett, H.F., Jr., 1961, Geology of Unalaska Island and adjacent insular shelf, Aleutian Islands, Alaska: U.S. Geological Survey Bulletin 1028-S, p. 583-676.Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)Randolph, D.B., and Ellis, W.T., 1989, Unalaska project, 1989 final report: Battle Mountain Exploration Company, Alaska District, 41 p., 5 appendices, 11 plates, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)Randolph, D.B., 1991, Unalaska project, 1990 final report: Battle Mountain Exploration Company, Alaska District, 62 p., 5 appendices, 15 plates, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)Simpson, D.F., 1986, Aleutian Islands project, 1985 final report: Kennecott Alaska Exploration Company, 54 p. (Report held by the Aleut Native Corporation, Anchorage, Alaska.)