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Egegik beach

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Au; Ti
Other commodities Fe
Ore minerals ilmenite; gold; titaniferous magnetite

Geographic location

Quadrangle map, 1:250,000-scale NK
Quadrangle map, 1:63,360-scale A-5
Latitude 58.0735
Longitude -157.5976
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Egegik placer occurrence is along the beach of Bristol Bay about nine miles south of Goose Point at the mouth of Egegik Bay. The occurrence is in about the middle of section 27, T. 24 S., R. 51 W., of the Seward Meridian; it is location 2 of Cobb (1972) and MacKevett and Holloway (1977). The location is accurate within one-half mile.

Geologic setting

Geologic description

Traces of flour gold occur in thin layers up to six inches thick of titaniferous magnetite-rich sand that lay along the strand line of the modern sand and gravel beach, among sand dunes, and buried in older deposits inland (Berryhill, 1963). The deposits cover less than an acre. Samples collected in two studies by the U.S. Bureau of Mines contained 4.3 to 83.3 pounds of iron per cubic yard, 1.6 to 27.6 pounds of TiO2 per cubic yard, and trace to 0.09 parts per million gold (Berryhill, 1963; Kimball, 1972).
Geologic map unit (-157.599708733074, 58.0727585821935)
Mineral deposit model Shoreline placer Ti and placer Au (Cox and Singer, 1986; models 39c and 39a).
Mineral deposit model number 39c, 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Samples collected in two studies by the U.S. Bureau of Mines contained 4.3 to 83.3 pounds of iron per cubic yard, 1.6 to 27.6 pounds of TiO2 per cubic yard, and trace to 0.09 parts per million gold (Berryhill, 1963; Kimball, 1972).
Indication of production None
Production notes Apparently none.

References

MRDS Number A013222

References

Berryhill, R.V., 1963, Reconnaissance of beach sands, Bristol Bay, Alaska: U.S. Bureau of Mines Report of Investigations 6214, 48 p.
Church, S.E., Riehle, J.R., Magoon, L.B., and Campbell, D.L., 1992, Mineral and energy resource assessment maps of the Mount Katmai, Naknek, and western Afognak quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2021-F, 2 sheets, scale 1:250,000.
Cobb, E.H., 1972, Metallic mineral resources map of the Mount Naknek quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-442, 1 sheet, scale 1:250,000.
Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p.
Cobb, E.H., 1980, Summaries of data on 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.
Kimball, A.L., 1972, Reconnaissance of Ugashik beach sands, Bristol Bay, Alaska: U.S. Bureau of Mines Open-File Report 21-72, 28 p.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metaliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169F, 39 p., 1 sheet, scale 1:1,000,000.
Reporters F.H. Wilson, S.E. Church, and D.P. Bickerstaff (U.S. Geological Survey)
Last report date 8/31/2005