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Jade Mountain

Mine, Inactive

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Commodities and mineralogy

Main commodities Jade
Other commodities Asbestos
Ore minerals chrysotile; nephrite (jade); tremolite

Geographic location

Quadrangle map, 1:250,000-scale AR
Quadrangle map, 1:63,360-scale A-5
Latitude 67.21
Longitude -158.05
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located on south slope of Jade Mountain above Jade Creek in T. 21 N., R. 4 E., Kateel River Meridian. Shown as locality 14 in Mayfield and Grybeck (1978) and accurate to within 2000 ft. (600 m).

Geologic setting

Geologic description

2 sq. mi. (3.2 square km) area of highly serpentinized ultramafic rock contains residual inclusions of nephrite jade and schistose nephrite containing 0.25-0.5 in. (0.5 -1 cm) wide veinlets of chrysotile and tremolite asbestos; some slip - fiber chrysotile in fibers up to 5 in. (11 cm) long (Anderson, 1945, p. 22-25).
Geologic map unit (-158.052805300023, 67.2094365771472)
Mineral deposit model Serpentine-hosted asbestos (Cox and Singer, 1986; model 8d).
Mineral deposit model number 8d

Production and reserves

Workings or exploration Short tunnel driven on asbestos veins many years prior to USBM study (Heide and others, 1949).
Indication of production Yes; small

Additional comments

There also has been minor production of nephrite jade from stream gravels of Jade Creek.

References

MRDS Number A011862

References

Anderson, Eskil, 1945, Asbestos and jade occurrences in the Kobuk River region, Alaska: Alaska Territorial Department of Mines Pamphlet 3-R, 26 p.
Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p.
Reporters K.R. Leonard (USGS), R.L. Elliott (USGS), J.M. Schmidt (USGS)
Last report date 10/26/1992