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  3. Alaska Resource Data File (ARDF)

Unnamed (Cave Point)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale D-1
Latitude 60.8631
Longitude -147.1863
Nearby scientific data Find additional scientific data near this location
Location and accuracy The occurrence is located near Cave Point in the NW1/4 section 4, T. 12 S., R. 11 W., of the Copper River Meridian. This is location 192 of Tysdal (1978 [MF-880-A]) and location S-111 of Jansons and others (1984). This location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

The occurrence is hosted in sheared pillow basalt and greenstone of the lower Tertiary Orca Group. The mineralization consists of quartz stringers containing chalcopyrite (Cobb and Tysdal, 1980) No assay results are reported.
Geologic map unit (-147.188345809303, 60.8625646088127)
Mineral deposit model Besshi massive sulfide (Cox and Singer, 1986; model 24b)
Mineral deposit model number 24b
Age of mineralization Tertiary or younger; the veins are in pillow basalt of the Orca Group of Tertiary age.
Alteration of deposit Basalt altered to greenstone.

Production and reserves

Workings or exploration No workings or assay results are reported.
Indication of production None

References

MRDS Number A010362

References

Cobb, E.H., and Tysdal, R.G., 1980, Summaries of data on and list of references to metallic and selected nonmetallic mineral deposits in the Blying Sound and Seward quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-621, 276 p.
Condon, W.H., and Cass, J.T., 1958, Map of a part of the Prince William Sound area, Alaska, showing linear geologic features as shown on aerial photographs: U.S. Geological Survey Miscellaneous Investigations Series Map I-273, 1 sheet, scale 1:125,000.
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.
Tysdal, R.G., 1978, Mines, prospects, and occurrences map of the Seward and Blying Sound quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-880-A, 2 sheets, scale 1:250,000.
Reporters Jeff A. Huber (Anchorage)
Last report date 1/30/2000