Red Mountain Occurrence, Salmon River - Red Mountain District, Goodnews Bay, Bethel Borough, Alaska, USA
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|Latitude & Longitude (WGS84):||58° 57' 0'' North , 161° 46' 11'' West|
|Latitude & Longitude (decimal):||58.95, -161.769722222|
Location: This occurrence is in a small drainage on the lower west flank of Red Mountain. It is 1/4 mile east of the beach and 1 1/4 mile west of the summit of Red Mountain. It is locality 5 of Cobb (1972 [MF 362]; 1980 [OF 80-909]).
Geology: Berryhill (1963, sample locality 47) collected a shovel sample of surface materials at this location and determined that the heavy mineral concentrates contained small amounts of chromite (1 to 10 percent) and traces of Pt and Au. Both hornblende and olivine were reported to be present in amounts exceeding 10 percent. This occurrence is in a small drainage on the lower west flank of Red Mountain, a composite ultramafic pluton containing abundant dunite. The surface materials at this site are apparently derived directly from erosion of the Red Mountain pluton.
Workings: No workings are present.
Commodities (Major) - Cr; (Minor) - Au, Pt
Development Status: None
Deposit Model: Placer PGE-Au (Cox and Singer, 1986; model 39b)
1 valid mineral.
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Berryhill, R.V., 1963, Reconnaissance of beach sands, Bristol Bay, Alaska: U.S. Bureau of Mines Report of Investigations 6214, 48 p. Cobb, E.H., 1972, Metallic mineral resources map of the Hagemeister Island quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-362, 1 sheet, scale 1:250,000. Cobb, E.H., 1980, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in fifteen quadrangles in southwestern and west-central Alaska: U.S. Geological Survey Open-File Report 80-909, 103 p.