Colorada Group

Past Producer in Yuma county in Arizona, United States with commodities Lead, Silver, Fluorine-Fluorite, Molybdenum, Barium-Barite
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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10060289
MRDS ID TC10305
Record type Site
Current site name Colorada Group
Alternate or previous names Colorado Group, Lincoln, La Colorado, Modesti Property
Related records 10210182

Geographic coordinates

Geographic coordinates: -114.16661, 33.00285 (WGS84)

Site location context

Political divisions (FIPS codes)

Yuma(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Castle Dome Peak(quadrangle 1:24,000 scale)

Trigo Mountains(quadrangle 1:100,000 scale)

Salton Sea(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Gila(hydrologic unit)

Lower Gila(hydrologic accounting unit)

Lower Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Yuma

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 005S 019W 12 E2 Arizona

Commodities

Commodity Importance
Lead Primary
Silver Primary
Fluorine-Fluorite Critical Secondary
Molybdenum Tertiary
Barium-Barite Critical Tertiary

Materials information

Materials Type of material
Fluorite Ore
Galena Ore
Wulfenite Ore
Barite Gangue
Calcite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale

Nearby scientific data

(1) -114.16661, 33.00285

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Significant No

Mining district

District name Castle Dome District

Land status

Ownership category
Area name Kofa National Wildlife Refuge

Comments on the production information

  • ROUGH ESTIMATE FOR TOTAL PRODUCTION OF ENTIRE CASTLE DOME DISTRICT (SEVEN MINE SITES). FLUORSPAR PRODUCTION IS PROBABLY A BY-PRODUCT OF LEAD MINING.

Reference information

Bibliographic references

  • Deposit

    "MINERAL AVAILABILITY SYSTEMS: ARIZONA FLUORSPAR", ARIZONA DMR, MARCH 1976.

  • Deposit

    VAN ALSTINE, R.E., 1969, "FLUORSPAR", IN ABM BULLETIN 180, USGS BULLETIN 871, P. 354.

  • Deposit

    PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERAL CARD FILES.

  • Deposit

    PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit GREEN, PURPLE, AND ROSE-COLORED FLUORITE ASSOCIATED WITH CALCITE, BARITE, GALENA, AND WULFENITE OCCURS IN VEINS WHERE MESOZOIC SHALE, IMPURE LIMESTONE, SILTSTONE, AND SCHIST HAVE BEEN INTRUDED BY RHYOLITE PORPHYRY AND DIORITE PORPHYRY. MAIN HOST ROCK IS CRETACEOUS SHALE. VEINS SPLIT AND BRANCH BUT ARE TRACEABLE FOR 4000 FT. FLUORITE ORE USUALLY LESS THAN 5 FT THICK. VEINS LOCALLY CONTAIN 40-60 PERCENT FLUORITE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1991 Carbonaro, Marguerite M. U.S. Geological Survey
Updater 01-DEC-1992 Orris, Greta J. U.S. Geological Survey
Updater 01-MAY-1995 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

Authoritative Arizona resources

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