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Unnamed (north flank of Paxson Mountain)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu
Ore minerals bornite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale A-4
Latitude 63.0866
Longitude -145.6433
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of 3,700 feet on the north flank of Paxson Mountain. It is one-tenth of a mile southeast of the Denali Highway, in the NW1/4NE1/4 section 21, T. 21 S., R. 11 E., Fairbanks Meridian. The occurrence corresponds to locality 9 in Rose and Saunders (1965) and to locality S88 in table 2 of Nokleberg and others (1991).

Geologic setting

Geologic description

This occurrence consists of bornite in a half-inch-thick vein (Rose and Saunders, 1965). The vein trends N35E and cuts metabasalt of the Nikolai Greenstone of Late Triassic age (Nokleberg and others, 1991). Several pieces of mineralized float occur downslope from the vein.
Geologic map unit (-145.645529545298, 63.0861799795967)
Mineral deposit model Basaltic Cu (Cox and Singer, 1986; model 23).
Mineral deposit model number 23
Age of mineralization Probably Cretaceous.
Alteration of deposit The vesicular basalt host rock is altered to chlorite and epidote.

Production and reserves

Workings or exploration Surface workings include hand-dug prospect pits.
Indication of production None

References

MRDS Number A011805

References

Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Mount Hayes quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-238, 140 p.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
Nokleberg, W.J., Lange, I.M., Roback, R.C., Yeend, Warren, and Silva, S.R., 1991, Map showing locations of metalliferous lode and placer mineral occurrences, mineral deposits, prospects, and mines, Mount Hayes quadrangle, eastern Alaska Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1996-C, 42 p., 1 sheet, scale 1:250,000.
Rose, A.W., and Saunders, R.H., 1965, Geology and geochemical investigations near Paxson, northern Copper River basin, Alaska: Alaska Division of Mines and Minerals Geological Report 13, 35 p.
Reporters W.T. Ellis (Alaska Earth Science), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (USGS)
Last report date 6/18/2002