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  3. Mineral Resource Data System (MRDS)

Rho B

Occurrence in San Bernardino county in California, United States with commodities Boron-Borates, Arsenic
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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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10023814
MRDS ID I003006
Record type Site
Current site name Rho B

Geographic coordinates

Geographic coordinates: -117.54005, 34.4989 (WGS84)
Relative position ABOUT 30 MILES W OF BARSTOW AND 7 MILES E OF BORON, CALIF.

Site location context

Political divisions (FIPS codes)

San Bernardino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Phelan(quadrangle 1:24,000 scale)

San Bernardino(quadrangle 1:100,000 scale)

San Bernardino(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Mojave(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California San Bernardino

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 011N 006W 29 SW California

Commodities

Commodity Importance
Boron-Borates Primary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Colemanite Ore
Calcite Gangue

Analytical data

Result ARSENIC VALUES MAY BE SIMILAR TO ADJACENT RHO A DEPOSIT AND THUS TOO HIGH FOR GLASS MANUFACTURING.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone > Claystone
    Rock unit name Tropico Group
    Rock description Tropico Group
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

(1) -117.54005, 34.4989
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Medium
Significant No
Discovery year 1957
Discoverer U.S. Geological Survey

Mining district

District name East Kramer Colemanite Area

Ownership information

  • Type Owner
    Owner Tenneco Mining Inc.
    First year 1976

Reserves and resources

  • Type In-situ
    Estimate year 1976
    Total resources 4988000mt ore
    Commodity Subtype Grade units Group Importance Year
    Boron-Borates B2O3 5 wt-pct Boron Major 1976

Comments on the reserve resource information

  • FIGURES ARE BROKEN OUT BY ORE ZONE.

Reference information

Bibliographic references

  • Deposit

    EVANS, J.R., AND ANDERSON, T.P., 1976, COLEMANITE DEPOSITS NEAR KRAMER JUNCTION, SAN BERNARDINO COUNTY, CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY SPECIAL PUBLICATION 50, 8 P

  • Other Database

    CIMRI

  • Reserve-Resource

    EVANS AND ANDERSON, 1976.

General comments

Subject category Comment text
Deposit DEPOSIT HAS UPPER AND LOWER OREBODIES SEPARATED BY 25-50 FT OF SHALE AND SANDSTONE. UPPER ZONE: AREA = 3,200,000 SQ FT; DEPTH FROM SURFACE TO MIDDLE OF ZONE = 715-975 FT; THICKNESS = 0-95 FT (50 FT AVERAGE); LENGTH/WIDTH = 2300 FT X 1400 FT. LOWER ZONE: AREA = 3,220,000 SQ FT; DEPTH FROM SURFACE TO MIDDLE OF ZONE = 775-1150 FT; THICKNESS = 45-175 FT (125 FT AVERAGE); LENGTH/WIDTH = 2300 FT X 1400 FT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1993 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative California resources

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