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Montana Mine

Past Producer in Custer county in Idaho, United States with commodities Gold, Silver, Copper, Zinc, Lead
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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. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10105694
MRDS ID W014280
MAS/MILS ID 0160370270
Record type Site
Current site name Montana Mine
Alternate or previous names Old Montana, Montana Group

Geographic coordinates

Geographic coordinates: -114.70653, 44.44379 (WGS84)
Elevation 2195
Relative position 4 MI N OF BONANZA

Site location context

Political divisions (FIPS codes)

Custer(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Custer(quadrangle 1:24,000 scale)

White Cloud Peaks(quadrangle 1:100,000 scale)

Challis(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Salmon(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 Custer

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 013N 015E 21 NW Idaho

Comments on the location information

  • S Slope Estes Mtn.

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Tertiary
Zinc Critical Tertiary
Lead Tertiary

Materials information

Materials Type of material
Argentite Ore
Chalcopyrite Ore
Galena Ore
Gold Ore
Sphalerite Ore
Chalcedony Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Hydrothermal Alteration

Analytical data

Result ORE ASSAYED $2000 - 3500 AU/TON.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Rock unit name Challis Volcanics-Tuff
    Rock description Challis Volcanics-Tuff
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff

Nearby scientific data

(1) -114.70653, 44.44379
ListMap

Economic information

Ore body information

  • General form CHUTE , CHIMNEY-LIKE
    Strike NE
    Dip 60 DEG SW
    Length 7.62M
    Width 5.18M
    Depth to bottom 161.54M

Controls for ore emplacement

  • Fissure

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1877
Year of first production 1877

Mining district

District name Yankee Fork District

Land status

Ownership category Private

Production statistics

  • Year 1915
    Material ORE
    Description Ap_Grade: ^8 - 23 Oz Au, 23 - 100 Oz Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Gold Gold 490g/mt
    Trace Ore Silver Silver 1945g/mt

Comments on the production information

  • Production Value $396,000 Total ; Production Above Intermittent: Production In 1877 - 1890'S, 1905 - 1907 , 1913 - 1917 ; Production Above Intermittent: Production In 1877 - 1890'S, 1905 - 1907 , 1913 - 1917 . Production Years: Late 1870'S - 1890'S, 1905 - 1907 , 1913 - 1917 .

Workings at the site

  • Type of workings Underground
    Overall depth 172.21M

Comments on the workings information

  • 6 Tunnels and Levels

Reference information

Bibliographic references

  • Deposit

    Umpleby, J. B., 1913, Some Ore Deposits In Northwestern Custer County, Idaho: USGS Bulletin 539, 104 P.

  • Deposit

    Anderson, A. L., 1949, Silver - Gold Deposits Of The Yankee Fork District, Custer County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 83, 37 P.

  • Deposit

    Bell, R. N., 1935, The Gold Resources Of Idaho: Mining And Contracting Review, V. 33, No. 37, P. 6 - 7.

  • Deposit

    Stiles, C. A., 1976 , Geology And Alteration Of The West Fork Mayfield Creek Area, Custer County, Idaho: Moscow, Idaho, Univ. Of Idaho M.S. Thesis, P. 103 - 106 .

  • Deposit

    5) Ross, C. P., 1927 , Ore Deposits In The Tertiary Lava In The Salmon River Mountains, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 25 , 20 P.

  • Deposit

    1913 Geolmap Umpleby, J. B., Bulletin 539

  • Deposit

    1949 Recon Idaho Bureau Of Mines And Geology Pamphlet 83

  • Deposit

    U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-3, No. 474, P. 218.

  • Production

    Anderson, A. L., 1949, Idaho Bureau Of Mines And Geology Pamphlet 83; Item 2, Bell, R. N., 1935, Mining And Contracting Review, V. 33, No. 37

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey
Reporter 05-NOV-1992 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