Poison Gulch Radioactive Occurrence

Occurrence in Lemhi county in Idaho, United States with commodity Thorium
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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Controls for ore emplacement
  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 10093627
MRDS ID W015756
MAS/MILS ID 0160590740
Record type Site
Current site name Poison Gulch Radioactive Occurrence
Alternate or previous names Idaho Thorium Showing No. 5.

Geographic coordinates

Geographic coordinates: -113.5478, 44.98549 (WGS84)
Elevation 1920
Relative position 10 MI NE OF LEMHI

Site location context

Political divisions (FIPS codes)

Lemhi(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Agency Creek(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 024E 12 SESE Idaho

Comments on the location information

  • On High Sharp Ridge Between 2 Prominent Gulches Tributary To Poison Gulch; 1 Mi E Of Pattee Creek

Commodities

Commodity Importance
Thorium Primary

Comments on the commodity information

  • Weak Radioactivity; Mineralization Not Detected By Unaided Eye

Host and associated rocks

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

Nearby scientific data

(1) -113.5478, 44.98549

Economic information

Geologic structures

Type of structure Regional
Structure name Laramide Thrust Zone

Controls for ore emplacement

  • Shear Zone

Comments on the geologic information

  • Original Structures entry:
    Regional - Broad Se-Trending Laramide Thrust Zone
  • Original tectonic setting entry:
    Edge Of Cratonic Shelf Or Hinge Belt
  • Original concentration process entry:
    Hydrothermal Activity
  • Original ore control entry:
    Shear Zone

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Mcdevitt District

Land status

Ownership category BLM Administrative Area

Reference information

Bibliographic references

  • Deposit

    Anderson, A. L., 1961, Geology And Mineral Resources Of The Lemhi Quadrangle, Lemhi County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 124, 111 P.

  • Deposit

    Anderson, A. L., 1958, Uranium, Thorium, Columbium, And Rare Earth Deposits In The Salmon Region, Lemhi County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 115, 81 P.

  • Deposit

    V.E. Mitchell, Et. Al; Mines And Prospects Map Series, 1981, Dubois Quad, Location No. 14.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1974 Miller, Pat J. 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.