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  3. Alaska Resource Data File (ARDF)

Unnamed (north bank of upper Sheep Creek)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite; malachite

Geographic location

Quadrangle map, 1:250,000-scale CV
Quadrangle map, 1:63,360-scale C-2
Latitude 60.567
Longitude -144.725
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 300 feet on the north bank of upper Sheep Creek. It is in the SE1/4 sec. 17, T. 15 S., R. 4 E., of the Copper River Meridian. Location of the site is accurate to within 1000 ft. Site is location C-4 in Jansons and others (1984).

Geologic setting

Geologic description

Site is described as an outcrop of Tertiary Orca Group slate (Nelson and others, 1985) stained with malachite. One 6-inch-wide shear zone contains chalcopyrite. Analysis of one grab sample indicated 0.51% Cu (Jansons and others, 1984).
Geologic map unit (-144.726980519532, 60.5664613155662)

Production and reserves

Workings or exploration
Site examined during U.S. Bureau of Mines and U.S.G.S. mineral resource assessment of the Chugach National Forest (Jansons and others, 1984; Nelson and others, 1984).
Analysis of one grab sample indicated 0.51% Cu (Jansons and others, 1984).
Indication of production None

Additional comments

Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.

References

MRDS Number 10307393

References

Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Mineral Land Assessment 5-84, 218 p., 2 sheets, scale 1:250,000.
Nelson, S.W., Dumoulin, J. A., and Miller, M.L., 1985, Geologic map of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-B, 16 p., 1 sheet, scale 1:250,000.
Nelson, S.W., Miller, M.L., Barnes, D.F., Dumoulin, J.A., Goldfarb, R.J., Koski, R.A., Mull, C.G., Pickthorn, W.J., Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral resource potential of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-A, 24 p., 1 plate, scale 1:250,000.
Reporters S.W. Nelson, Anchorage, AK
Last report date 6/10/2000