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  3. Alaska Resource Data File (ARDF)

Otuk Creek

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Pb; Zn
Ore minerals galena; pyrite; sphalerite
Gangue minerals iron carbonate; calcite

Geographic location

Quadrangle map, 1:250,000-scale KL
Latitude 68.32
Longitude -155.7
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located on east side of upper tributary of Otuk Creek. Known to within one mile.

Geologic setting

Geologic description

Outcrop of Kayak Shale contains Fe-rich sulfide-bearing concretions that range from 7.6 cm to 20 cm in diameter. The cores of some concretions contain sphalerite, pyrite, and minor galena.
Geologic map unit (-155.702900109322, 68.3195104396424)
Mineral deposit model Sediment-hosted Pb-Zn
Age of mineralization Lower Mississippian

Production and reserves

Workings or exploration Sulfide-bearing concretions have up to 2.3 ppm Ag, more than 5,000 ppm Ba, and 1,500 ppm Zn.
Indication of production None

References

MRDS Number A106143

References

Kelley, K.D., and Mull, C.G., 1995, Maps showing areas of potential for mineral resources in the Killik River 1 degree x 3 degree quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2225-A, 1 sheet, scale 1:250,000.
Kelley, K.D., Mull, C. G., and Barton, H. N., 1995, Maps showing the distribution of selected elements in minus-30-mesh stream-sediment samples from the southern part of the Killik River 1 degree x 3 degree quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2225-C, 2 sheets, scale 1:250,000.
Reporters K.D. Kelley
Last report date 2/7/1997