No. 31 Thorium Deposit

Occurrence in Lemhi county in Idaho, United States with commodities Thorium, Uranium, Titanium, Lead
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10093633
MRDS ID W015845
MAS/MILS ID 0160590589
Record type Site
Current site name No. 31 Thorium Deposit

Geographic coordinates

Geographic coordinates: -113.4551, 44.96849 (WGS84)
Elevation 2286
Relative position 9 MI E OF TENDOY

Site location context

Political divisions (FIPS codes)

Lemhi(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lemhi Pass(quadrangle 1:24,000 scale)

Leadore(quadrangle 1:100,000 scale)

Dubois(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lemhi(hydrologic unit)

Salmon(hydrologic accounting unit)

Lower Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management ID)

Bureau of Land Management ID BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Salmon-Challis National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Idaho Lemhi

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 019N 025E 14 SWSWSE Idaho

Commodities

Commodity Importance
Thorium Primary
Uranium Tertiary
Titanium Critical Tertiary
Lead Tertiary

Materials information

Materials Type of material
Pyromorphite Ore
Rutile Ore
Thorite Ore
Barite Gangue
Biotite Gangue
Garnet Gangue
Goethite Gangue
Muscovite Gangue
Quartz Gangue
Staurolite Gangue
Tourmaline Gangue

Analytical data

Result 1 GRAB SAMPLE HAD 0.0012% THO2, 0.012%

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Belt Supergroup
    Rock description Challis Volcanics-Basal Conglomerate;Belt Supergroup-Quartzite
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate
    Rock type qualifier Basal Conglomerate
    Rock unit name Challis Volcanics

Nearby scientific data

(1) -113.4551, 44.96849

Economic information

Ore body information

  • General form VEINLETS

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Lemhi Pass Area

Land status

Ownership category National Forest
Area name Salmon National Forest

Comments on the workings information

  • 1 Prospect Pit

Reference information

Bibliographic references

  • Deposit

    Staatz, M. H., 1972, Geology And Description Of Thorium-Bearing Vein, Lemhi Pass Quadrangle, Idaho And Montana: USGS Bull 1351, 94 P

  • Deposit

    V.E. Mitchell, Et. Al; Mines And Prospects Map Series, 1981, Dubois Quad, Location No. 58

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey
Reporter 14-NOV-1983 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

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