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  3. Mineral Resource Data System (MRDS)

Skylark Prospect

Occurrence in Lemhi county in Idaho, United States with commodities Thorium, REE
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10071957
MRDS ID W015747
Record type Site
Current site name Skylark Prospect

Geographic coordinates

Geographic coordinates: -113.4751, 44.98629 (WGS84)
Elevation 2225
Relative position 12 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

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

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 10 Idaho

Comments on the location information

  • On Same Sw-Facing Slope As The Sparky But Lies To The NE And In Part Is Higher On The Slope

Commodities

Commodity Importance
Thorium Primary
REE Critical Tertiary

Comments on the commodity information

  • Parts Of Vein Filling Strongly Radioactive

Materials information

Materials Type of material
Feldspar Gangue
Quartz Gangue
Specularite Gangue

Host and associated rocks

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

Nearby scientific data

(1) -113.4751, 44.98629
ListMap

Economic information

Geologic structures

Type of structure Local
Structure name Cleavage

Ore body information

  • Strike N 60 DEG W
    Dip 90 DEG
    Thickness 0.61M
    Length 30.48M

Comments on the geologic information

  • Quartzitic Beds Strike N 30 Deg W, Dip 25 Deg Ne;
  • Original Structures entry:
    Local - Cleavage Strikes N 60 Deg W, Dips 45 Deg Sw

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 National Forest
Area name Salmon National Forest

Reference information

Bibliographic references

  • Deposit

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

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1974 Miller, Pat J. U.S. Geological Survey

Beyond USGS

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

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