Cosmos Creek

Prospect, Inactive

Commodities and mineralogy

Main commodities Asbestos
Other commodities Au; jade
Ore minerals chrysotile; gold; jade; nephrite; tremolite

Geographic location

Quadrangle map, 1:250,000-scale AR
Quadrangle map, 1:63,360-scale A-3
Latitude 67.01
Longitude -157.14
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located near Shungnak Mountain above and along Cosmos Creek in T. 19 N., R. 8 E., Kateel River Meridian. Shown as locality 20 in Mayfield and Grybeck and accurate to within 1000 ft. (300 m).

Geologic setting

Geologic description

Low grade chrysotile and tremolite asbestos veinlets less than 1.5 in. (3 cm) wide, along strike length of over 1 mi. (1.6 km). Small amounts of Au and minor nephrite reported in nearby creek gravels (Anderson, 1947, p. 15).
Geologic map unit (-157.1427479877, 67.0094479980867)
Mineral deposit model Serpentine-hosted asbestos and placer Au (Cox and Singer, 1986; models 8d and 39a).
Mineral deposit model number 8d, 39a

Production and reserves

Workings or exploration Four trenches dug by USBM (Heide and others, 1949, p. 21-22) to obtain samples for testing.
Indication of production None

References