Republican Group Mine

Past Producer in Custer county in Idaho, United States with commodities Gold, Silver, Copper, Lead, Zinc
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. Mineral rights holdings
  16. Land status
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10070940
MRDS ID W014090
MAS/MILS ID 10159420
Record type Site
Current site name Republican Group Mine
Alternate or previous names Idaho Claim, Bull Dog Claim, Republican Claim, Buck Horn Claim

Geographic coordinates

Geographic coordinates: -115.15565, 44.59158 (WGS84)
Elevation 2438
Relative position 27 MI NNW OF STANLEY

Site location context

Political divisions (FIPS codes)

Custer(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Soldier Creek(quadrangle 1:24,000 scale)

Pistol Creek(quadrangle 1:100,000 scale)

Challis(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Middle Fork 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 015N 011E 32 NWSW Idaho

Commodities

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

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Pyrite Gangue
Pyrrhotite Gangue
Quartz Gangue

Alteration

  • (Local) Sericitization

Analytical data

Result AVG. GRADE EST. 0.006 OZ AU/TON, 1.3 OZ AG/TON, 0.01 % CU, 0.9 % PB ALONG SHEAR ZONE
Result VEIN SAMPLES AVG. 0.008 OZ AU/TON, 0.5 OZ AG/TON, 2.7 % PB, TRACE CU
Result ASSAYS AS HIGH AS 4.7 % PB, 30.5 OZ AG/TON, 0.8 % ZN, 0.10 OZ AU/TON

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Idaho Batholith-Granite
    Rock description Idaho Batholith-Granite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -115.15565, 44.59158

Economic information

Ore body information

  • General form Tabular and lenticular
    Strike N 55 DEG W
    Dip 75 DEG S
    Thickness 1M
    Length 76.2M
    Width 3.66M

Controls for ore emplacement

  • Shear Zone

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900

Mining district

District name Seafoam District

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category National Forest
Ownership category National Primitive Area
Area name Idaho Primitive Area

Workings at the site

  • Type of workings Surface/Underground
    Length 18.59M

Comments on development

  • INCLUDES REPUBLICAN, BUCKHORN, BULLDOG, AND IDAHO PATENTED CLAIMS. THE REPUBLIC GROUP CONSISTS OF 4 PATENTED CLAIMS AND IS ADJOINED BY THREE OTHER CLAIMS. AVERAGE GRADE OF THE SHEAR ZONE IS ESTIMATED TO BE 0.21 GRAM GOLD AND 44.6 GRAM SILVER PER METRIC TON, 0.01 PERCENT COPPER AND 0.9 PERCENT LEAD.

Reference information

Bibliographic references

  • Deposit

    CATER, F. W., AND OTHERS, 1973, MINERAL RESOURCES OF THE IDAHO PRIMITIVE AREA AND VICINITY, IDAHO: U. S. GEOLOGICAL SURVEY BULL. 1304, 431 P

  • Deposit

    1973 RECON CATER, F. W., AND OTHERS, BULL. 130

  • Production

    CATER, F. W., AND OTHERS, 1973, USGS BULL. 1304, 431 P.

General comments

Subject category Comment text
Deposit REPUBLICAN VEIN STRIKES N 18 DEG W, DIPS 80 TO 87 DEG S.
Deposit Discovery Year: 1900; 1956

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1974 Miller, Pat J. U.S. Geological Survey
Reporter 30-OCT-1992 Weldin, Robert U.S. Bureau of Mines

Beyond USGS

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