Unnamed (north of Kuskulana Pass)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au; Cu
Other commodities Fe
Ore minerals chalcopyrite; magnetite

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale C-8
Latitude 61.564
Longitude -143.6462
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the south tributary to Slatka Creek and north of Kuskulana Pass (MacKevett and others, 1978). It is at an elevation of about 4,200 feet, 2,300 feet northwest of elevation 5075 and 4,000 feet north-northwest of Kuskulana Pass. The site is in the SW1/4 of section 32, T. 3 S., R. 10 E. of the Copper River Meridian. This is locality 35 of MacKevett and others (1978) and locality 121 of MacKevett (1976). The location is accurate to within about 100 feet.

Geologic setting

Geologic description

This occurrence consists of an iron-rich skarn (assumed to be magnetite-rich and to contain disseminated chalcopyrite) that is developed in Triassic marble adjacent to a small Jurassic granodiorite pluton (MacKevett and others, 1978; MacKevett, 1976). A sample of the skarn contained 0.06 parts per million (ppm) gold, 1,500 ppm copper, 7 ppm molybdenum, and more than 20 percent iron (MacKevett, 1976).
Geologic map unit (-143.64828431094, 61.5635441751199)
Mineral deposit model Fe skarn (Cox and Singer, 1986; model 18d)
Mineral deposit model number 18d
Age of mineralization The age of a nearby intrusive rock is inferred to be Jurassic (MacKevett and others, 1978).

Production and reserves

Indication of production None

Additional comments

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

References