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

Speculation Mine

Past Producer in Lemhi county in Idaho, United States with commodities Gold, Silver
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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. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10071587
MRDS ID W015066
MAS/MILS ID 0160590602
Record type Site
Current site name Speculation Mine
Alternate or previous names Brittannic Mining Co., Kentuck

Geographic coordinates

Geographic coordinates: -114.29843, 45.36818 (WGS84)
Elevation 1082
Relative position .87 MI SW OF SHOUP

Site location context

Political divisions (FIPS codes)

Lemhi(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pine Creek Rapids(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 024N 018E 35,36 Idaho
Boise 023 N 018 E 03 NENE Idaho

Comments on the location information

  • On Hillside Above Brittannic Mine

Commodities

Commodity Importance
Gold Primary
Silver Tertiary

Materials information

Materials Type of material
Pyrite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock type qualifier Gneissic Granite
    Rock description Gneissic Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -114.29843, 45.36818
ListMap

Economic information

Ore body information

  • Strike N 75 DEG E
    Dip 73 DEG SE
    Width 0.15M

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1887

Mining district

District name Mineral Hill District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Brittannic Mining Co.

Comments on the production information

  • $25000 Production Value Includes Production From Brittannic And Margaret Mines

Comments on development

  • Speculation Mine, Along With The Brittannic Mine And Margaret Mine, Was Worked Under The Name Of Brittannic Mining Co.

Reference information

Bibliographic references

  • Deposit

    Gray, F. A., 1927, Ore Deposits Of The Mineral Hill District, Lemhi County, Idaho: Minneapolis, Minnesota, Univ. Of Minnesota, Phd Thesis

  • Production

    Gray, F. A., 1927, Univ Of Minnesota, Phd Thesis

  • Deposit

    Mines And Prospects Of The Elk City Quad., Idmb Mines And Prospects Map Series, Ve Mitchell, Et Al.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1977 Siefken, Robert R. (Miller, Pat) 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