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Bear River Chrome Mine

Past Producer in Placer county in California, United States with commodity Chromium
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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. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10043540
MRDS ID M100322
Record type Site
Current site name Bear River Chrome Mine
Alternate or previous names Sullivan Chrome Mine, Sullivan-Hemphill-Nobel Mine 1917-22, Becky Mine ?, Central Pacific Lease, Black Nugget Mine World War Ii

Geographic coordinates

Geographic coordinates: -120.78714, 39.24295 (WGS84)
Location accuracy 1000(meters)
Relative position Assumed Spot Center Ne Of Nw, 19

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Dutch Flat(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 Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 016N 011E 19 NE OF NW California

Comments on the location information

  • MINE LOCATED NEAR THE CENTER OF THE NORTH EDGE OF NE OF NW, SECT. 19

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Economic information

Ore body information

  • General form LENSE
    Width 0.61M

Comments on the geologic information

  • DEPOSIT OCCURS IN THE EASTERNMOST OF 3 SUBPARALLEL BELTS OF ULTRAMAFIC ROCKS THAT TREND NORTHWARD ACROSS PLACER CO.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1885
Discoverer Cap Gallatin
Year of first production 1885
Year of last production 1920

Mining district

District name Dutch Flat Area

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Pacific Gas And Electric Co.
    First year 1949

Comments on the workings information

  • WORKINGS CONSISTED OF TWO ADITS, A CROSSCUT, A SHORT RAISE AND NUMEROUS OPEN CUTS AND PITS

Reference information

Bibliographic references

  • Deposit

    RYNEARSON, G.A., 1953, CDMG BULL 134, PT. 3, CHAPT. 5, P. 199, 200, 204, 306

  • Production

    CDMG BULL 134, PT. 3, CHAPT. 5, P. 200, 204

General comments

Subject category Comment text
Deposit DEPOSIT CONSISTED OF A SERIES OF LENSES AND BOULDER FLOAT
Deposit Discovery Year: 1880'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-83 Oster, Karel L. (Albers, John P.) 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.