Unnamed (tributary to East Fork, Iron Creek)

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale B-4
Latitude 62.3767
Longitude -148.9828
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is at an elevation of about 3,000 feet on a south tributary of the East Fork, Iron Creek. It is in the northwest corner of sec. 6, T. 26 N., R. 3 E., Seward Meridian. The location is accurate to within 1/4 mile radius. This is locality 77 of Csejtey and Miller (1978).

Geologic setting

Geologic description

This prospect consists of small veins or replacement pods of chalcopyrite in altered, mafic metavolcanic rocks (greenstone) of Paleozoic(?) age (Csejtey and Miller, 1978). A sample of greenstone contains 5,000 parts per million copper (Miller and others, 1978).
Geologic map unit (-148.985021961632, 62.3762079831099)
Mineral deposit model Basaltic Cu? (Cox and Singer, 1986; model 23?)
Mineral deposit model number 23?
Alteration of deposit The greenstone host rocks are altered but the type of alteration is not specified (Singer and others, 1978).

Production and reserves

Workings or exploration Only surface sampling by the U.S. Geological Survey (Miller and others, 1978).
Indication of production None


MRDS Number A012180


Reporters R.K. Rogers (U. S. Geological Survey contractor)
Last report date 10/1/2002