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Last Chance Occurrence

Past Producer in Lemhi county in Idaho, United States with commodities Gold, Thorium, Copper
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10071967
MRDS ID W015760
MAS/MILS ID 0160590663
Record type Site
Current site name Last Chance Occurrence

Geographic coordinates

Geographic coordinates: -113.5594, 45.0092 (WGS84)
Elevation 1646
Location accuracy 250(meters)
Relative position 10.5 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

Goldstone Mountain(quadrangle 1:24,000 scale)

Salmon(quadrangle 1:100,000 scale)

Dillon(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

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 024E 01 NESW Idaho

Comments on the location information

  • On Upper Pattee Creek about Mi above mouth of Poison Gulch and across creek from Idaho Thorium No. 3 ; Info From Land.St :(1978)

Commodities

Commodity Importance
Gold Primary
Thorium Tertiary
Copper Tertiary

Comments on the commodity information

  • Weak radioactivity

Materials information

Materials Type of material
Thorite Ore
Feldspar Gangue

Alteration

  • (Local) Sericitization

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Yellowjacket Formation
    Rock description Yellowjacket
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -113.5594, 45.0092
ListMap

Economic information

Ore body information

  • General form STRINGERS

Controls for ore emplacement

  • Shear Zone

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Mcdevitt District

Land status

Ownership category National Forest
Area name Salmon National Forest

Ownership information

  • Type Owner
    Owner Tony Schwartz, Pete Samora

Comments on the workings information

  • Both old cuts and adits

Reference information

Bibliographic references

  • 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

    Mines And Prospect Of The Dillon Quad, IBMG Mine And Prospect Map Series, V E Mitchel, Et Al

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1974 Miller, Pat J. U.S. Geological Survey
Updater 01-MAR-1983 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey
Reporter 15-OCT-1990 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