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Hawkins Island #1

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu
Ore minerals pyrite

Geographic location

Quadrangle map, 1:250,000-scale CV
Quadrangle map, 1:63,360-scale C-5
Latitude 60.555
Longitude -145.829
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 200 feet on the east side of Mud Bay on Hawkins Island. It is in the W1/2 Sec. 19, T. 15 S., R. 3 W., of the Copper River Meridian. Accuracy of the location is to within 1000 ft. Location corresponds to site C-45 in Jansons and others (1984).

Geologic setting

Geologic description

This occurrence consists of pyrite in slate and graywacke of the Tertiary Orca Group. The slate contains up to 15% pyrite. A single grab sample collected in 1980 contained 36 ppm Cu (Jansons and others, 1984).
Geologic map unit (-145.830985614914, 60.5544516153997)
Age of mineralization Probably Tertiary based on the age of the host rocks (Nelson and others, 1985).

Production and reserves

Workings or exploration The slate contains up to 15% pyrite. A single grab sample collected in 1980 contained 36 ppm Cu (Jansons and others, 1984).
Indication of production None

Additional comments

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

References

MRDS Number 10307376

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.
Reporters S.W. Nelson, Anchorage, AK
Last report date 6/10/2000