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  3. Mineral Resource Data System (MRDS)

Black Ledge

Occurrence in Nevada county in California, United States with commodity Manganese
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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. Economic information about the deposit and operations
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10031791
MRDS ID M011419
Record type Site
Current site name Black Ledge
Related records 10115551

Geographic coordinates

Geographic coordinates: -120.92047, 39.16628 (WGS84)
Relative position 6 MI. NE OF COLFAX.

Site location context

Political divisions (FIPS codes)

Nevada(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chicago Park(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Bear(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Nevada

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 009E 12 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Materials information

Materials Type of material
Rhodonite Ore

Analytical data

Result AVERAGE GRADE 25 PERCENT MANGANESE

Nearby scientific data

(1) -120.92047, 39.16628
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: ORE OCCURS IN BED 30 FT. LONG, 6 FT. THICK, AND 20 FT. DEEP. IT IS A TYPICAL CENTRAL SIERRA NEVADA RHODONITE DEPOSIT WEATHERED TO OXIDE AT THE SURFACE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner J. H. Bastiani, Lavina Richards

Comments on the production information

  • NO PRODUCTION RECORDED.

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 125, P. 147

  • Deposit

    BULL. 152, 1950, P. 162

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 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.