Frenchy's Mine

Past Producer in Adams county in Idaho, United States with commodities Copper, Gold, Molybdenum, Silver
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. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Mineral rights holdings
  17. Land status
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10070215
MRDS ID W012966
MAS/MILS ID 0160030042
Record type Site
Current site name Frenchy's Mine
Alternate or previous names Trenchy's, Great Eastern, John D., Rocky Fellow, Henry Ford

Geographic coordinates

Geographic coordinates: -116.6252, 45.09517 (WGS84)
Elevation 1676
Relative position 1 MI. N. OF BEAR RANGER STATION. 3 1/4 MI. E. OF CUPRUM.

Site location context

Political divisions (FIPS codes)

Adams(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cuprum(quadrangle 1:24,000 scale)

Riggins(quadrangle 1:100,000 scale)

Grangeville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Brownlee Reservoir(hydrologic unit)

Middle Snake-Powder(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Payette 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 Adams

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 020N 002W 06,07 NESESW (06) Idaho

Comments on the location information

  • Bear Cr. Slope Of Smith Mt.

Commodities

Commodity Importance
Copper Primary
Gold Tertiary
Molybdenum Tertiary
Silver Tertiary

Comments on the commodity information

  • Sulfide Bunches Value $8 - $12/Ton.

Materials information

Materials Type of material
Quartz Ore
Chalcopyrite Ore
Gold Ore
Molybdenite Ore
Calcite Gangue
Iron Gangue
Pyrite Gangue

Alteration

  • (Local) Epidotization

Analytical data

Result FS MIN EXAM 1957 PLUMB ASSAY 1957 BLACK AND DEASON SALT LAKE CITY

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Seven Devils Volcanics-Tuffaceous Andesite
    Rock description Seven Devils Volcanics-Tuffaceous Andesite
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -116.6252, 45.09517

Economic information

Geologic structures

Type of structure Local
Structure description Gouge Seam

Ore body information

  • General form SHATTERED, BANDED, BUNCHES,
    Strike N. 10 DEG. W.
    Dip 60 DEG. E.
    Length 76.2M
    Width 10.67M

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 1880
Discoverer Arthur David

Mining district

District name Seven Devils District

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest
Area name Payette National Forest

Workings at the site

  • Type of workings Underground
    Length 114.3M
    Overall depth 22.86M

Comments on development

  • 6 Unpatented Claims Worked Intermittently From 1881 - 1920.

Reference information

Bibliographic references

  • Deposit

    Livingston, D. C., And Laney, F. B., 1920, The Copper Deposits Of The Seven Devils And Adjacent Districts: Idaho Bureau Of Mines And Geology, Bulletin 1, P. 33 - 35

  • Deposit

    1920 Compile Idaho Bureau Of Mines And Geol., Bulletin

  • Production

    Livingston, D. C., And Laney, F. B., 1920, Idaho Bureau Of Mines And Geology Bulletin 1, 105 P.

  • Deposit

    V.E. Mitchell, Et. Al; Mines And Prospects Map Series, 1981, Grangeville Quad, Location No. 183

General comments

Subject category Comment text
Deposit Great Eastern Vein Described Above; The John D. Vein Strikes N 40 Deg W And Dips Steeply Ne

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1975 Murphy, Lyn S.; Miller, Pat U.S. Geological Survey
Reporter 01-AUG-1976 Meier, M. Lorrie U.S. Geological Survey
Reporter 16-MAY-1995 Winters, Dick U.S. Bureau of Mines
Reporter 11-SEP-1995 Hughes, Curt A. U.S. Bureau of Mines

Beyond USGS

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