Alaska
Occurrence

Unnamed (on southeast coast of Nagai Island)

Alaska, United States
GoldArsenic
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
SecondaryArsenic
Materials
Ore mineralsArsenopyrite, Gold, Pyrite
GangueQuartz
Geology
AlterationSedimentary country rocks are silicified and pyritic adjacent to the sills. Hydrothermal breccia zone in sills. Color anomaly about 3 miles north of site.
Economic & production
Development statusOccurrence
Identification
Deposit ID10308261
RegionNA
Data scoreC
Coordinates54.97424, -160.11739
References
Ellis, W.T., and Apel, R.A., 1989, Unga/Alaska Peninsula 1989 final report: Battle Mountain Exploration Company report, 41 p., 28 map sheets at various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)Frisken, J.G., 1992, Interpretation of reconnaissance geochemical data from the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska: U.S. Geological Survey Bulletin 1968, 47 p., 3 map sheets, scale 1:250,000.Frisken, J.G., and Kelly, D.L., 1992, Maps showing the distribution of gold determined in various sample media collected from Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska: U.S. Geological Survey Map MF-2155-D, 2 map sheets, scale 1:250,000.Wilson, F.H., Detterman, R.L., and Harris, E.E., 1991, Generalized geologic map of Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2155-A, 1 sheet, scale 1:250,000.