Unnamed (north of Upper Hanagita Lakes)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cr; Ni
Ore minerals chromite
Gangue minerals serpentine

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale A-7
Latitude 61.2225
Longitude -143.4059
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is in the headwaters of an unnamed north tributary to the Klu River. It is at an elevation of about 4,600 feet, 8,500 feet east-southeast of benchmark Verde (elevation 6233). The site is in the NE1/4 of section 34, T. 7 S., R. 11 E. of the Copper River Meridian. This is locality 41 of MacKevett (1976). It is probably accurate to within about 1,000 feet.

Geologic setting

Geologic description

Small dike-like bodies of largely serpentinized ultramafic rock are emplaced in Upper Paleozoic metamorphic rocks. A sample contained, 150 parts per million (ppm) cobalt, 3,000 ppm chromium, 3,000 ppm nickel, and more than 10 percent magnesium (MacKevett, 1976).
Geologic map unit (-143.407955596785, 61.2220458308125)
Mineral deposit model Podiform chromite (Cox and Singer, 1986, model 8a)
Mineral deposit model number 8a
Age of mineralization Late Paleozoic or younger based on the age of the metamorphic host rocks.
Alteration of deposit Serpentinization.

Production and reserves

Indication of production None

Additional comments

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

References