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Douglas Mine

Producer in Alameda 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. Land status
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10109082
MRDS ID M004671
Record type Site
Current site name Douglas Mine

Geographic coordinates

Geographic coordinates: -121.62103, 37.55297 (WGS84)
Relative position SW 1/4 NEAR SUMMIT OF CEDAR MTN

Site location context

Political divisions (FIPS codes)

Alameda(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cedar Mountain(quadrangle 1:24,000 scale)

Stockton(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Francisco Bay(hydrologic unit)

San Francisco Bay(hydrologic accounting unit)

San Francisco Bay(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Alameda

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 003E 26 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -121.62103, 37.55297
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Gerald F. Lafon
    First year 1950

Comments on the production information

  • PRODUCTION REPORTED TO HAVE BEEN ABOUT 3000 TONS PRIOR TO 1888, WHICH SEEMS QUITE LARGE SINCE THESE DEPOSITS WERE NOT DISCOVERED UNTIL 1882 OR LATER; POSSIBLY THIS MINE MAY BE THE SAME AS THE NEWMAN (CEDAR MTN., MENDENHALL)

Comments on the workings information

  • SERIES OF TUNNELS AND OPEN CUTS

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 46, NO.2, APRIL, 1950, P.342, PL.58

  • Deposit

    DOM BULL. 134, PT.2, CHAP, 2, P.52 & 79, PL.1

General comments

Subject category Comment text
Deposit IF THE DOUGLAS IS THE SAME AS THE NEWMAN, THERE IS SOME DISCREPANCY, AS THE SAME AUTHOR SAYS THE NEWMAN IS IN THE SE 1/4 ALL REFERENCES SEEM SOMEWHAT CONFUSED IN THE LOCATIONS OF THE MINES AND PROSPECTS IN THIS SECTION

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. 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.