Unnamed (Left Fork)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Ag
Ore minerals chalcopyrite

Geographic location

Quadrangle map, 1:250,000-scale BN
Quadrangle map, 1:63,360-scale C-6
Latitude 65.52
Longitude -164.71
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at the mouth of Left Fork, a west tributary to Kougarok River. It is 2.5 miles west of the Nome-Taylor road and about a 1,000 feet west of the mouth of Louisa Creek, a small east tributary to Kougarok River. This is locality 3 of Gamble (1988).

Geologic setting

Geologic description

Gamble (1988) describes this occurrence as disseminated chalcopyrite in chlorite schist and reports one per cent copper and 15 ppm silver from one sample. Bedrock exposed in the area around the mouth of Left Fork is part of a mafic metavolcanic assemblage that Till and others (1986) consider to be Ordovician in age.
Geologic map unit (-164.712678287521, 65.51927033737)
Mineral deposit model Unknown; possibly related to volcanogenic massive sulfide environment
Age of mineralization Unknown; if the occurrence is related to a volcanogenic massive sulfide environment then mineralization would be Paleozoic in age.

Production and reserves

Indication of production None