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  3. Mineral Resource Data System (MRDS)

Junction Placer

Occurrence in Lemhi county in Idaho, United States with commodities Gold, Tin
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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. 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. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10070546
MRDS ID W013524
MAS/MILS ID 0160590102
Record type Site
Current site name Junction Placer
Alternate or previous names Forney Placers

Geographic coordinates

Geographic coordinates: -114.3147, 45.0203 (WGS84)
Elevation 1676
Relative position 6.5 MILES SW OF COBALT, IDAHO

Site location context

Political divisions (FIPS codes)

Lemhi(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Blackbird Creek(quadrangle 1:24,000 scale)

Bighorn Crags(quadrangle 1:100,000 scale)

Elk City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Salmon-Panther(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 020N 018E 35 Idaho

Comments on the location information

  • Jct. of Panther Creek, Musgrove Creek, and Moyer Creek

Commodities

Commodity Importance
Gold Primary
Tin Critical Tertiary

Materials information

Materials Type of material
Cassiterite Ore

Analytical data

Result SEVERAL HUNDRED CUBIC YARDS OF GRAVEL WASHED - SOME CASSITERITE AND AU REPORTED

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Rock unit name Alluvium-Gravel
    Rock description Alluvium-Gravel
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -114.3147, 45.0203
ListMap

Economic information

Ore body information

  • Thickness 1.83M
    Width 91.44M
    Depth to bottom 3.66M

Economic information about the deposit and operations

Operation type Placer
Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Blackbird District

Land status

Ownership category National Forest
Area name Salmon National Forest

Comments on development

  • Bedrock flume 200 yards long, 1 ditch, 1 floodgate ; Econ.Com: Gravel yielded $0.20 Au/cy, 1 Lb Sn/Cy over a small acreage

Reference information

Bibliographic references

  • Deposit

    Livingston, D. C., 1919, Tungsten, Cinnabar, Manganese, Molybdenum, And Tin Deposits Of Idaho: Univ. Of Idaho Bulletin 2, Vol. 14, 72 P.

  • Deposit

    Lorain, S.H., And Metzger, O.H., 1939, Reconnaissance Of Placer Mining Districts In Lemhi County, Idaho: USBM Inf. Circ. 7082, 81 P.

General comments

Subject category Comment text
Deposit 20 acres

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-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