1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

No. 4 Thorium Prospect

Occurrence in Lemhi county in Idaho, United States with commodities Thorium, REE, Lead
Map
XML
JSON
KML
B
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. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10072015
MRDS ID W015822
MAS/MILS ID 0160590755
Record type Site
Current site name No. 4 Thorium Prospect

Geographic coordinates

Geographic coordinates: -113.4828, 44.98459 (WGS84)
Elevation 1939
Relative position 8.5 MI ENE 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)

Geographic areas

Country State County
United States Idaho Lemhi

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 019N 025E 10 NESWSW Idaho

Commodities

Commodity Importance
Thorium Primary
REE Critical Tertiary
Lead Tertiary

Materials information

Materials Type of material
Galena Ore
Monazite Ore
Thorite Ore
Goethite Gangue
Hematite Gangue
Magnetite Gangue
Quartz Gangue
Specularite Gangue

Analytical data

Result 1 CHANNEL SAMPLE FOUND 0.42% THO2

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Belt Supergroup
    Rock description Belt Supergroup-Quartzite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) Challis Volcanic Group.
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure name Lemhi Pass Fault

Ore body information

  • Strike N 70 DEG W
    Dip 75 DEG SW
    Thickness 0.4M
    Length 24.38M

Controls for ore emplacement

  • Fault

Comments on the geologic information

  • Original Structures entry:

    Regional - Lemhi Pass Fault

  • Original ore control entry:

    Lemhi Pass

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 BLM Administrative Area

Reference information

Bibliographic references

  • Deposit

    Staatz, M. H., 1972, Geology And Description Of The Thorium-Bearing Veins, 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. 39

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.

Maps centered on this site