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Skimo Creek West

Occurrence, Inactive

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Commodities and mineralogy

Main commodities P
Other commodities V
Ore minerals fluorapatite

Geographic location

Quadrangle map, 1:250,000-scale CL
Latitude 68.3
Longitude -152
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located along east side of western tributary to Skimo Creek, 3 km above junction. Known to within one mile.

Geologic setting

Geologic description

Phosphatic rocks are confined to the middle and upper parts of the black chert and shale member of the Alapah Limestone. Phosphate occurs in a section of interbedded oolitic shales and pisolitic phosphorites containing oblate pellets. The phosphatic rocks continue for a minimum of 4.2 km along strike.
Geologic map unit (-152.002820313299, 68.2995670227755)
Mineral deposit model Bedded phosphorite (Cox and Singer, 1986; model 34c).
Mineral deposit model number 34c
Age of mineralization Mississippian.

Production and reserves

Workings or exploration One 2.2 m-thick zone averaged 20.6 percent P2O5 and a 0.9 m-thick zone averaged 13.0 percent P2O5. Samples also contained up to 874 ppm V.
Indication of production None

References

MRDS Number A106068

References

Kurtak, J.M., Meyer, M.P., Hicks, R.W., Werdon, M.B., and Mull, C.G., 1995, Mineral investigations in the Colville Mining District and southern National Petroleum Reserve in Alaska: U.S. Bureau of Mines Open-File Report 8-95, 217 p., 1 sheet, scale 1:250,000.
Patton, W.W., Jr., and Tailleur, I.L., 1964, Geology of the upper Killik-Itkillik region, Alaska: U.S. Geological Survey Professional Paper 303-G, p. 409-500.
Reporters K.D. Kelley
Last report date 2/7/1997