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  3. Mineral Resource Data System (MRDS)

Unnamed (south of Inland Lake)

Occurrence in Alaska, United States with commodities Thorium, Uranium
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10003164
MRDS ID A015698
Record type Site
Current site name Unnamed (south of Inland Lake)

Geographic coordinates

Geographic coordinates: -159.7423, 66.32751 (WGS84)
Relative position This occurrence is at an elevation of about 100 feet about 5 miles south of Inland Lake. This site is in the SW1/4 section 21, T. 11 N., R. 5 W., of the Kateel River Meridian. Barker (1985), figure 7, anomalous area 4.

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Selawik B-2(quadrangle 1:63,360 scale)

Shungnak SW(quadrangle 1:100,000 scale)

Selawik(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Selawik Lake(hydrologic unit)

Kobuk-Selawik Rivers(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Selawik 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
Thorium Primary
Uranium Primary

Comments on the commodity information

  • Ore Material = Radioactive minerals

Materials information

Materials Type of material
Fluorite Gangue

Nearby scientific data

(1) -159.7423, 66.32751
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The country rocks in the area of this occurrence consist of the Cretaceous Inland Lake alkaline intrusive complex. The occurrence consists of locally abundant purple fluorite as matrix and breccia filling in syenite rubble. The fluorite is similar to that associated with the radioactive zones near VAMB Saturday at the Uranium 2 and 3 occurrences (ARDF number SE005 and SE006) (Barker, 1985). A sample of fluorite-bearing pulaskite, possibly a dike, from the Inland Lake alkaline complex contained 31 ppm U and 178 ppm Th, but no radioactive minerals or alteration zones were identified.
  • Age = Cretaceous.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Selawik

Comments on the workings information

  • Workings / Exploration = The site was visited briefly and sampled by U.S. Bureau of Mines in 1984.

Reference information

Bibliographic references

  • Deposit

    Miller, T.P. and Bunker, C.M., 1975, Uranium, thorium and potassium analyses of selected plutonic rocks from west central Alaska: U.S. Geological Survey Open-File Report 75-216, 5p.

  • Deposit

    Cobb, E.H., and Miller, T.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Hughes, Kotzebue, Melozitna, Selawik and Shungnak quadrangles, west-central Alaska: U.S. Geological Survey Open-File Report 81-847-A, 14 p.

  • Deposit

    Barker, J.C., 1985, Sampling and analytical results of a mineral reconnaissance in the Selawik Hills area, northwestern Alaska: U.S. Bureau of Mines Open-File Report 43-85, 67 p.

Comments on the references

  • Primary Reference = Miller and Bunker, 1975

General comments

Subject category Comment text
Deposit Model Name = Radioactive minerals in fluorite-bearing pulaskite.
Deposit Other Comments = the occurrence is located within the Selawik National Wildlife Refuge.

Reporter information

Type Date Name Affiliation Comment
Reporter 02-DEC-99 Williams, Anita 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.