Columbia Glacier (east)

Prospect, Probably inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale VA
Quadrangle map, 1:63,360-scale A-8
Latitude 61.0861
Longitude -146.9402
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is 2,100 feet west of peak 3780 and 2.3 miles southeast of the summit of the Great Nunatak; it is at an elevation of about 2,000 feet in the SE1/4 section 14, T. 9 S., R. 10 W., of the Copper River Meridian. This prospect is probably located to within one-quarter mile. It is locality 86 of Winkler and others (1981 [OFR 80-892-B]).

Geologic setting

Geologic description

A lode claim was staked in 1968 for gold deposits (U.S. Bureau of Mines, 1980; Winkler and others, 1981 [OFR 80-892-B]). Bedrock in this area is siliciclastic rocks of the Tertiary Orca Group; the Contact fault that separates the Orca and Valdez Group is about 1.5 miles to the northeast (Winkler and others, 1981 [OFR 80-892-A]).
Geologic map unit (-146.942258251567, 61.08556116568)
Mineral deposit model Low-sulfide Au-quartz veins? (Cox and Singer, 1986; model 36a)
Mineral deposit model number 36a?
Age of mineralization Tertiary; deposit is assumed to be epigenetic and to cross cut Lower Tertiary rocks of the Orca Group.

Production and reserves

Workings or exploration At least surface prospecting has occurred at this locality.
Indication of production None