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Black Mountain Claims

Occurrence in San Bernardino county in California, United States with commodities Manganese, Iron, Copper
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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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10033531
MRDS ID M020113
Record type Site
Current site name Black Mountain Claims
Alternate or previous names Gallagher
Related records 10115826

Geographic coordinates

Geographic coordinates: -114.70637, 34.95335 (WGS84)
Relative position 8 TO 10 MI. N. W. OF NEEDLES, ON THE S. SLOPES OF THE DEAD MOUNTAINS, 4 TO 5 MI. W. OF THE COLORADO RIVER. 2 TO 4 MI. TO JAVA STATION, THE NEAREST RAILROAD POINT.

Site location context

Political divisions (FIPS codes)

San Bernardino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Needles NW(quadrangle 1:24,000 scale)

Needles(quadrangle 1:100,000 scale)

Needles(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Havasu-Mohave Lakes(hydrologic unit)

Lower Colorado(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

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

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California San Bernardino

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 010N 022E 17,20 California

Commodities

Commodity Importance
Manganese Critical Primary
Iron Tertiary
Copper Tertiary

Materials information

Materials Type of material
Psilomelane Ore
Pyrolusite Ore
Calcite Gangue

Analytical data

Result AVERAGE GRADE 35 PERCENT MANGANESE, 5 TO 15 PERCENT IRON OXIDES, 15 TO 25 PERCENT CALCIUM CARBONATE, 5 TO 15 PERCENT SILICA.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Late Cambrian

Economic information

Ore body information

  • Length 3.05M
    Width 0.91M

Comments on the geologic information

  • GEOL.DESC: ORE OCCURS AS SMALL SCATTERED LENS-SHAPED BODIES IN GRANODIORITE GNEISS. ORE BODIES ARE IRREGULAR AND DISCONTINUOUS, USUALLY LESS THAN 10 FT. LONG, AND 6 INCHES TO 3 FT. WIDE. THE CONTACT WITH GNEISS IS SHARP, WITH ORE ENCASED IN A THIN SELVEDGE OF CREAM COLORED LIME CARBONATE. THE ORE IS MAINLY PSILOMELANE WITH CALCITE, AND POSSIBLY SOME PYROLUSITE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Mining district

District name Ibex

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 PP. 191 - 192

  • Deposit

    D.O.M. BULL. 125 1943 P. 160

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1977 Killman, K.; Albers, 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.