Chagvan Bay

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cr
Other commodities Au; Pt
Ore minerals chromite

Geographic location

Quadrangle map, 1:250,000-scale HG
Quadrangle map, 1:63,360-scale D-6
Latitude 58.81
Longitude -161.75
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Chagvan Bay occurrence is 4.5 miles of the modern beach, extending from 1.5 miles south of the mouth of Salmon River to the sand spit at the mouth of Chagvan Bay. The map site is at the approximate midpoint of the 4.5-mile-long of beach. This is locality 13 of Cobb (1972 [MF 362]; 1980 [OF 80-909]).

Geologic setting

Geologic description

Berryhill (1963) collected 5 auger samples along this segment of the Kuskokwim Bay beach. Heavy mineral concentrates from these samples contained greater than 10 percent chromite and trace amounts of gold and platinum.
Geologic map unit (-161.752221426663, 58.8092139767089)
Mineral deposit model Placer PGE-Au; beach (Cox and Singer, 1986; model 39b)
Mineral deposit model number 39b
Age of mineralization Holocene.

Production and reserves

Workings or exploration No workings are present; there was surface sampling in the 1950s and probably at other times (Berryhill, 1963).
Indication of production None