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Black Rock Chrome Deposit

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. Economic information about the deposit and operations
  10. Mining district
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10077014
MRDS ID W024364
Record type Site
Current site name Black Rock Chrome Deposit
Related records 10139697

Geographic coordinates

Geographic coordinates: -120.79491, 39.00295 (WGS84)
Elevation 512
Location accuracy 1000(meters)
Relative position Lat. And Long. For Nw, 06, T.13n, R.11e

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Foresthill(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 014N;013N 010E;011E 36;06 SW; NW California

Comments on the location information

  • BOTH DEPOSITS LOCATED IN THE CORNERS OF THEIR RESPECTIVE SECTIONS. ; INFO FROM LAND.ST :UNDETERMINED

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Analytical data

Result 45 - 52 % CR2O3

Nearby scientific data

(1) -120.79491, 39.00295
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Forest Hill Divide Area

Ownership information

  • Type Owner
    Owner R. F. Craig, O. H. Jones
    First year 1918

Comments on the workings information

  • WORKINGS,CONSISTED OF TWO PITS ONE 12 FT, THE OTHER25 FT DEEP (1918)

Reference information

Bibliographic references

  • Deposit

    DOM SR-67,PL 3;BULL 134,PT 3,CH 5,P 200,228,PL 13

  • Production

    CDMG BULL 134, PT. 3, CHAPT. 5, P. 228

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.