North Spit (Goodnews Bay)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au; Cr
Ore minerals chromite; gold; magnetite

Geographic location

Quadrangle map, 1:250,000-scale GO
Quadrangle map, 1:63,360-scale A-8
Latitude 59.07
Longitude -161.87
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is about 3 miles of the modern beach along Kuskokwim Bay from the south tip of North Spit (Goodnews Bay) north to USGS benchmark Promontory. It is locality 10 of Hoare and Cobb (1977) and of Cobb and Condon (1972).

Geologic setting

Geologic description

Berryhill (1963) collected five samples of the modern beach along the Bering Sea side of North Spit (Goodnews Bay). Chromite was present in pan concentrates from all of the samples and it was a major constituent in three of them; magnetite was present in about equal amounts to chromite. The iron content of the samples ranged from 1.3 to 6.1 pounds per cubic yard. There was a trace of gold in the three samples that had higher chromite concentrations.
Geologic map unit (-161.872255792848, 59.069219102132)
Mineral deposit model Placer Au-PGE; beach (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Holocene.

Production and reserves

Workings or exploration Reconnaissance sampling of beach sands was completed in 1958 or 1959 (Berryhill, 1963).
Indication of production None

References