Bismark Mountain

Prospect, Inactive

Commodities and mineralogy

Main commodities Asbestos
Other commodities Jade; magnesite
Ore minerals chrysotile; nephrite
Gangue minerals magnesite; nemalite

Geographic location

Quadrangle map, 1:250,000-scale AR
Quadrangle map, 1:63,360-scale A-3
Latitude 67.05
Longitude -157.26
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located above Shungnak River on Bismark Mountain in T. 19 N., R. 7 E., Kateel River Meridian. Shown as locality 18 in Mayfield and Grybeck (1978) and accurate to within 1000 ft. (300 m).

Geologic setting

Geologic description

Network of low grade cross-and slip-fiber chrysotile veinlets 0.5-2.0 in. (1-4 cm) wide in area of serpentine float 800 ft. (244 m) long, several hundred feet (60 m) wide and up to 8 ft. (2.5 m) deep. Nearby magnesite veinlets and asbestos as well as residual boulders of nephrite occur over a wide area of serpentinized ultramafic rocks cutting schist (Heide and others, 1949, p. 16-18).
Geologic map unit (-157.262758684031, 67.0494475695308)
Mineral deposit model Serpentine-hosted asbestos (Cox and Singer, 1986; model 8d).
Mineral deposit model number 8d

Production and reserves

Workings or exploration Four or five surface trenches dug by USBM circa WW II. Small test shipment made during World War ll but no production (Anderson, 1945, p. 19-20).
Indication of production None

References

MRDS Number A011866

References

Reporters K.R. Leonard (USGS), R.L. Elliott (USGS), J.M. Schmidt (USGS), S.W. Nelson (USGS retired)
Last report date 5/6/1997