Unnamed Occurrence (ARDF - SB014; on northern Nagai Island), Alaska Peninsula District, Aleutians East Borough, Alaska, USA
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Location: The map site of this occurrence is at an elevation of 200 feet, on Nagai Island approximately 2.5 miles south-southwest of Cape Wedge. It is referred to as SBRGX-40 in Wilson and others (1988, locality 14). The location is accurate to within 2,500 feet.
Geology: This occurrence is in interbedded siltstone and sandstone in the Lower Cretaceous Shumagin Formation near a contact with a dike or outlier of the Shumagin Batholith (Wilson and others, 1995). Anomalous values in lead and zinc have been reported in the sedimentary rock (Wilson and others, 1988).
Workings: Rock sample 84ADt177, collected by the U. S. Geological Survey in the mid-1980's, was reported to be anomalous in lead and zinc (Wilson and others, 1988).
Commodities (Major) - Pb, Zn
Development Status: None
Mineral List
No entries listed.
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References
Angeloni, L.M., Wilson, F.H., and Sutley, Stephen, 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 sheet, 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 Peninsula, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 2 map sheets, 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., 1 plate, scale 1:250,000.
