Unnamed (northeast of Solsmunket Lake)

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

Geologic information

Identification information

Deposit ID 10003075
MRDS ID A015600
Record type Site
Current site name Unnamed (northeast of Solsmunket Lake)

Geographic coordinates

Geographic coordinates: -156.02331, 66.10953 (WGS84)
Relative position This occurrence is at an elevation of about 2,000 feet, in the saddle of a ridge 3 miles northeast of Solsmunket Lake. The map site is in section 12, T. 8 N., R. 13E., of the Kateel River Meridian. Cobb (1972, MF-448), location 12.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Shungnak A-1(quadrangle 1:63,360 scale)

Shungnak SE(quadrangle 1:100,000 scale)

Shungnak(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Koyukuk National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Tungsten Critical Primary
REE Critical Secondary
Thorium Secondary
Uranium Secondary

Comments on the commodity information

  • Ore Material = uranothorianite

Materials information

Materials Type of material
Thorite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Monzonite

Nearby scientific data

(1) -156.02331, 66.10953

Economic information

Comments on the geologic information

  • Geologic Description = This occurrence consists of a tungsten-bearing quartz vein, and of radioactive minerals, in monzonite (Miller and Ferrians, 1968). The quartz vein is 1 to 3 feet wide. It assayed 7,000 ppm W, but no tungsten mineral was noted. Samples of monzonite from the border facies of the Cretaceous Zane Hills pluton, which is mainly granodiorite, contained 14 to 33 ppm U and 75 to 199 ppm Th. The radioactivity apparently is mainly in uranothorianite, thorite, betafite, allanite, zircon and sphene.
  • Age = Cretaceous.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Shungnak

Comments on the workings information

  • Workings / Exploration = Site visited and sampled by U.S. Geological Survey (Miller and Ferrians, 1968).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Miller and Ferrians, 1968

General comments

Subject category Comment text
Deposit Model Name = Tungsten-bearing quartz vein and disseminated radioactive minerals in monzonite.

Reporter information

Type Date Name Affiliation Comment
Reporter 16-DEC-99 Williams, Anita U.S. Geological Survey

Beyond USGS

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

Authoritative Alaska resources

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