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Cosmos Creek

Prospect in Alaska, United States with commodities Asbestos, Gold, Jade
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

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).??

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ambler River A-3(quadrangle 1:63,360 scale)

Ambler River SE(quadrangle 1:100,000 scale)

Ambler River C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Kobuk River(hydrologic unit)

Kobuk-Selawik Rivers(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

NANA Regional Corporation, Incorporated(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

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
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
ListMap

Economic information

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 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

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

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.