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Mapes-O:Hara Lease Occurrence, Beckwith Ranch Mines

Producer in Tuolumne 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. Host and associated rocks
  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. Reporter information

Geologic information

Identification information

Deposit ID 10077962
MRDS ID W026050
Record type Site
Current site name Mapes-O:Hara Lease Occurrence, Beckwith Ranch Mines
Related records 10190057

Geographic coordinates

Geographic coordinates: -120.48989, 37.8827 (WGS84)
Elevation 427
Relative position APPROX. 4 MILES W OF CHINESE CAMP, CA.

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sonora(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Stanislaus(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
001S 013E 01 California

Comments on the location information

  • PREVIOUS QUAD DESIGNATION = SAN JOSE 1:250000

Commodities

Commodity Importance
Chromium Critical Primary

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -120.48989, 37.8827
ListMap

Economic information

Ore body information

  • General form IRREG

Comments on the geologic information

  • THE DEPOSIT OCCURS IN THE NORTHERN PART OF THE WEST ERNMOST OF TWO SERPENTINE BELTS THAT TREND NW ACROSS THE COUNTY. THE BELT IS EXPOSED OVER AN AREA OF 30KM BY 6KM.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Chinese Camp Area

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner R. B. Beckwith

Comments on the workings information

  • WORKINGS CONSISTED OF SMALL PITS AND SHAFTS LESS THAN 25 FT DEEP.

Reference information

Bibliographic references

  • Deposit

    CATER, F.W.JR., 1948, CDMG BULL 134, PART 3, CHAPT. 1, P.20

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1982 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.