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Black Arrow Ranch 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. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10032068
MRDS ID M012220
Record type Site
Current site name Black Arrow Ranch Deposit
Related records 10286153

Geographic coordinates

Geographic coordinates: -121.08631, 38.97628 (WGS84)

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Auburn(quadrangle 1:24,000 scale)

Sacramento(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

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 013N 008E 16 S2 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -121.08631, 38.97628
ListMap

Economic information

Ore body information

  • General form LENSE

Comments on the geologic information

  • GEOL.DESC: ORE OCCURRED AS SMALL LENSES 6 INCHES TO 3 1/2 FT. WIDE. ORE EXPOSED IN WORKINGS IN 1918 CONSISTED OF "LEOPARD ORE" (NODULAR ORE) CONTAINING ABOUT 40% CR2O3 BUT SOME MASSIVE ORE FOUND IN THE CUTS AND AS FLOAT. SOME OF THE BLOCKS OF FLOAT WERE AS MUCH AS 3 FT. IN DIAMETER.

Economic information about the deposit and operations

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

Mining district

District name Dry Creek Area

Ownership information

  • Type Operator
    Owner F. W. Mcnear
    First year 1918
  • Type Owner
    Owner Black Arrow Ranch Co.
    First year 1918

Comments on the workings information

  • WORKED BY INCLINED SHAFT 50 FT. DEEP AND SEVERAL SMALL OPEN CUTS.

Reference information

Bibliographic references

  • Deposit

    DOM BULL. 134, PT. 3, CHAP. 5, P. 200, 233, PL. 13

  • Production

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

General comments

Subject category Comment text
Deposit ORE CONSISTED OF "LEOPARD ORE " (NODULAR ORE), MASSIVE ORE AND BLOCKS OF FLOAT, SOME 3 FT DIAMETER. ORE OCCURRED AS SMALL LENSES 6 IN TO 3.5 FT WIDE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-1983 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.