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  3. Alaska Resource Data File (ARDF)

Unnamed (near 'Nik Hill')

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Ag; Cu
Ore minerals malachite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale C-3
Latitude 62.7464
Longitude -148.1948
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 5,620 feet, about 0.2 mile east of the top of hill 5896 (which is informally called Nik Hill). It is approximately 3 miles northwest of Mt. Watana and 5 miles west-northwest of the north end of Watana Lake. The location is accurate to within 1/4 mile.

Geologic setting

Geologic description

This occurrence is in metabasalt of the Triassic, Nikolai Greenstone; it consists of quartz veins that contain malachite. U.S. Geological Survey rock samples contain up to 33,550 parts per million copper and 16.2 parts per million silver (J. Schmidt, written communication, 2001).
Geologic map unit (-148.197034129959, 62.7459324468481)
Mineral deposit model Basaltic copper (Cox and Singer, 1986; model 23)
Mineral deposit model number 23
Age of mineralization Occurs in Triassic metabasalt.
Alteration of deposit Oxidation of copper mineral.

Production and reserves

Workings or exploration Only surface sampling by U.S. Geological Survey (J. Schmidt, written communication, 2001).
Indication of production None

References

References

Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L, 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains quadrangle, northern part of Anchorage quadrangle, and southwest part of Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-A, 60 p., 1 sheet, scale 1:250,000.
Reporters R.K. Rogers (U. S. Geological Survey contractor)
Last report date 10/4/2002