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  3. Mineral Resource Data System (MRDS)

Twin Sister Mine

Past Producer in Boise county in Idaho, United States with commodities Gold, Antimony, 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. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10105548
MRDS ID W007585
Record type Site
Current site name Twin Sister Mine
Related records 10265296

Geographic coordinates

Geographic coordinates: -115.88376, 43.91068 (WGS84)
Elevation 1463
Relative position 3 MI. E. OF OLD CENTERVILLE.

Site location context

Political divisions (FIPS codes)

Boise(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Placerville(quadrangle 1:24,000 scale)

Idaho City(quadrangle 1:100,000 scale)

Hailey(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Boise-Mores(hydrologic unit)

Middle Snake-Boise(hydrologic accounting unit)

Middle Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management ID)

Bureau of Land Management ID BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Idaho Boise

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 007N 005E 33 Idaho

Comments on the location information

  • NEAR THE HEAD OF MILL CR.

Commodities

Commodity Importance
Gold Primary
Antimony Critical Tertiary
Zinc Critical Tertiary
Lead Tertiary

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Fe Stains, Scorodite

Host and associated rocks

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

Nearby scientific data

(1) -115.88376, 43.91068
ListMap

Economic information

Ore body information

  • General form LENSES
    Strike N 70 DEG W
    Dip 45 DEG SW
    Thickness 2.13M

Controls for ore emplacement

  • Fissure

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Idaho City

Land status

Ownership category BLM Administrative Area

Comments on the production information

  • $50,000 OF AU (?) ORE IN THE EARLY DAYS PLUS 1,000 TONS ORE IN 1934.

Reference information

Bibliographic references

  • Deposit

    ANDERSON, ALFRED L., 1947, GEOLOGY AND ORE DEPOSITS OF BOISE BASIN, IDAHO, U. S. GEOL. SUR. BULL. 944 - C, P. 242

  • Deposit

    1947 GEOLMAP ANDERSON, A. L., BULL. 944 -

  • Production

    ANDERSON, A. L. 1947. USGS BULL. 944 - C, P. 242.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1975 Steigner, William D. U.S. Geological Survey
Updater 01-SEP-1976 Siefken, Robert R. U.S. Geological Survey

Beyond USGS

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

External references

Maps centered on this site