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Schultze

Prospect, Inactive

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Commodities and mineralogy

Main commodities Cu
Ore minerals chalcocite

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale B-5
Latitude 61.4559
Longitude -142.6409
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is on the steep west valley wall of the Nizina River, north of Park Gulch. It is at an elevation of about 4,600 feet, 2,800 feet south of elevation 5720 and about 2,000 feet north-northwest of the center of section 12, T. 5 S., R. 15 E. of the Copper River Meridian. This is locality 74 of MacKevett (1976); the location is accurate to within a few hundred feet.

Geologic setting

Geologic description

The deposit at this prospect consists of a small chalcocite-rich pod and chalcocite-bearing stringers in the lower part of the Triassic Chitistone Limestone (MacKevett, 1976). The prospect was explored by two short adits. Copper mineralization is widespread in the lower Chitistone Limestone. It is thought to have accompanied regional deformation and low-grade metamorphism in the Late Jurassic to Early Cretaceous (MacKevett and others, 1997).
Geologic map unit (-142.64297103343, 61.4554663345233)
Mineral deposit model Basaltic Cu (Cox and Singer, 1986; model 23) and/or Kennecott-type copper deposit (after MacKevett and others, 1997)
Mineral deposit model number 23?
Age of mineralization Cretaceous? Copper mineralization is widespread in the lower Chitistone Limestone. It is thought to have accompanied regional deformation and low-grade metamorphism in the Late Jurassic to Early Cretaceous (MacKevett and others, 1997).

Production and reserves

Workings or exploration The prospect was explored by two short adits.
Indication of production None

Additional comments

The locality is in the Wrangell-Saint Elias National Park and Preserve.

References

MRDS Number A011711

References

MacKevett, E.M., Jr., 1974, Geologic map of the McCarthy B-5 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1146, 1 sheet, scale 1:63,360.
MacKevett, E.M., Jr., 1976, Mineral deposits and occurrences in the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-773-B, 2 sheets, scale 1:250,000.
MacKevett, E.M., Jr., Cox, D.P., Potter, R.W., III, and Silberman, M.L., 1997, Kennecott-type deposits in the Wrangell Mountains, Alaska--High-grade copper ores near a basalt-limestone contact, in Goldfarb, R.J., and Miller, L.D., eds., Mineral deposits of Alaska: Economic Geology Monograph 9, p. 66-89.
Reporters Travis L. Hudson (Applied Geology, Inc.)
Last report date 1/12/2003