Cosmos Creek

Prospect in Alaska, United States with commodities Asbestos, Gold, Jade

Geologic information

Identification information

Deposit ID 10001170
MRDS ID A011868
Record type Site
Current site name Cosmos Creek

Geographic coordinates

Geographic coordinates: -157.14345, 67.00953 (WGS84)
Relative position 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).??
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Asbestos Primary
Gold Secondary
Jade Secondary

Materials information

Materials Type of material
Chrysotile Ore
Gold Ore
Jade Ore
Nephrite Ore
Tremolite Ore

Mineral occurrence model information

Model code 18
USGS model code 8d
Deposit model name Serpentine-hosted asbestos
Model code 119
USGS model code 39a
BC deposit profile C01. C02
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -157.14345, 67.00953

Comments on the geologic information

  • 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).

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Non-metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Shungnak

Comments on the workings information

  • Workings / Exploration = Four trenches dug by USBM (Heide and others, 1949, p. 21-22) to obtain samples for testing.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011868
USGS Alaska Resource Data File ARDF AR011

Bibliographic references

  • Deposit

    Anderson, Eskil, 1945, Asbestos and jade occurrences in the Kobuk River region, Alaska: Alaska Territorial Department of Mines Pamphlet 3-R, 48 p.

  • Deposit

    Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p.

  • Deposit

    Heide, H.E., Wright, W.S., and Rutledge, F.A., 1949, Investigations of the Kobuk River asbestos deposits, Kobuk district, northwest Alaska: U.S. Bureau of Mines Report of Investigations 4414, 25 p.

  • Deposit

    Reed, I.M., 1931, Report on the placer deposits of the upper Kobuk goldfields: Alaska Territorial Department of Mines Miscellaneous Report 37-1, 57 p

Comments on the references

  • Primary Reference = Anderson, 1947

General comments

Subject category Comment text
Deposit Model Name = Serpentine-hosted asbestos/placer Au

Reporter information

Type Date Name Affiliation Comment
Reporter 04-MAY-1997 K.R. Leonard U.S. Geological Survey
Reporter 04-MAY-1997 R.L. Elliott U.S. Geological Survey
Reporter 04-MAY-1997 J.M. Schmidt U.S. Geological Survey
Reporter 04-MAY-1997 S.W. Nelson U.S. Geological Survey