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

Two Sisters Group

Past Producer in Gilpin county in Colorado, United States with commodities Uranium, Vanadium, Gold, Silver, Lead, Zinc
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10191516
MRDS ID D002232
MAS/MILS ID 0080470062
Record type Site
Current site name Two Sisters Group
Related records 10090655

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -105.52448, 39.8086 (WGS84)

Site location context

Political divisions (FIPS codes)

Gilpin(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Central City(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Clear(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Gilpin

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 003 S 073 W 12 Colorado

Commodities

Commodity Importance
Uranium Tertiary
Vanadium Critical Tertiary
Gold Primary
Silver Primary
Lead Primary
Zinc Critical Primary

Materials information

Materials Type of material
Argentite Unknown
Cerussite Unknown
Chalcopyrite Unknown
Galena Unknown
Gold Unknown
Pyrite Unknown
Sphalerite Unknown
Torbernite Unknown
Uraninite Unknown
Zincite Unknown

Nearby scientific data

Ore Body (1) -105.52448, 39.8086
ListMap

Economic information

Ore body information

  • Depth to top 53.4M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 PIPELIKE
    Type of Orebody #2 SHEAR ZONE
    Shape of Orebody #2 IRREGULAR
    Shape of Orebody #3 TABULAR
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control IGNEOUS
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 BLEACHING
    Type of Wallrock Alter. #2 PYRITIZATION
    Strike And Dip N80E:
    Minimum Depth to Top 45.8
    Date of Last Modification 780921

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1953

Mining district

District name Central City

Land status

Ownership category Private

Ownership information

  • Type Unknown
    Owner United Mining And Leasing Corp.
    Home office Colorado
    Year 1975
  • Type Owner
    Owner Robert Gilmore
    Home office Colorado
    Year 1974

Reference information

Bibliographic references

  • Deposit

    REF: MAS FILE

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Minecom U.S. Bureau of Mines
Updater 15-JUN-0007 Melton, Greg 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

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.