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Unnamed (near Tyonek)

Occurrence, Undetermined

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Commodities and mineralogy

Main commodities Fe; Ti; Zr
Other commodities Co; Ta; Th
Ore minerals euxenite; ilmenite; magnetite; zircon

Geographic location

Quadrangle map, 1:250,000-scale TY
Quadrangle map, 1:63,360-scale A-4
Latitude 61.03
Longitude -151.3
Nearby scientific data Find additional scientific data near this location
Location and accuracy Ilmenite beach sands occur for several miles along the west side of Cook Inlet south of the village of Old Tyonek in Section 19, T.11 N., R. 11 W. (U.S. Bureau of Mines, 1998, MAS # 0020840009). Location approximate within one mile.

Geologic setting

Geologic description

Ilmenite beach sands occur for several miles along the west side of Cook Inlet between the village of Old Tyonek and Shirleyville. Cook (1969, p. 99-105) evaluated this occurrence by concentrating the heavy minerals in a -48 mesh fraction. He noted potentially valuable minerals to be magnetite, ilmenite and zircon. Minor amounts of euxenite, a source of columbium, tantalum and thorium were also noted. Very limited descriptive information is published on this prospect.
Geologic map unit (-151.302241237215, 61.0294407334824)
Mineral deposit model Placer Ti (Cox and Singer, 1986; model 39c).
Mineral deposit model number 39c
Age of mineralization Quaternary

Production and reserves

Indication of production None

Additional comments

Very limited descriptive information is published on this prospect.

References

MRDS Number A106264

References

Cook, D.J., 1969, Heavy minerals in Alaskan beach sand deposits: University of Alaska, Mineral Industry Research Laboratory Report 20, 114 p.
U.S. Bureau of Mines, 1998, Minerals Availability System/Minerals Industry Location System (MAS/MILS), Talkeetna quadrangle: Worldwide Web URL http://imcg.wr.usgs.gov/data.html.
Reporters Madelyn A. Millholland (Anchorage)
Last report date 6/1/1998