Commodities
PrimarySilver, Gold
SecondaryArsenic, Mercury
Deposit
Model104: Hot-spring Au-Ag
Materials
Ore mineralsGold, Pyrite
GangueQuartz
Geology
AlterationThe volcanic rocks exhibit regional propylitic alteration and local intense argillic alteration and weak silicification. The clay zones contain up to 2 percent pyrite and thin, discontinuous quartz veins.
Economic & production
Development statusOccurrence
Identification
Deposit ID10308466
RegionNA
Data scoreD
Coordinates53.19907, -168.50237
References
Nye, C.J., Motyka, R.J., Turner, D.L., and Liss, S.A., 1992, Geology and geochemistry of the Geyser Bight geothermal area, Umnak Island, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigation 92-1, 85 p., 2 map sheets, scale 1/24,000.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).