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Don Pedro Mine

Past 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. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Production statistics
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10043699
MRDS ID M100602
Record type Site
Current site name Don Pedro Mine

Geographic coordinates

Geographic coordinates: -120.42072, 37.77909 (WGS84)
Elevation 274
Relative position APPROX. 10.3 K SOUTH OF CHINES CAMP, CA.

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chinese Camp(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Tuolumne(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
Mount Diablo 002S;002S;002S 014E;014E;014E 10;10;10 SE OF NE OF NW (10) California

Comments on the location information

  • WORKINGS LOCATED ON THE TOP OF A GENTLE SWELL ABOUT 100 M NE OF A SMALL, INTER MITTENT STREAM IN THE NW 1/4, SECT. 10.

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Analytical data

Result ORE AVERAGED 40% CR2O3.

Host and associated rocks

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

Nearby scientific data

(1) -120.42072, 37.77909
ListMap

Economic information

Ore body information

  • General form POD
    Thickness 25M
    Length 122M
    Width 30M
  • General form POD

Comments on the geologic information

  • THE MINE OCCURS IN A SMALL SILL-LIKE BODY THAT LIES TO THE SOUTH AND ALONG THE TREND OF THE MAJOR NW TRENDING PERIDOTITE MASSES OF TUOLUMNE COUNTY. THE SILL-LIKE BODY IS EXPOSED OVER AN AREA 90 M BY 1000 M.

Economic information about the deposit and operations

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

Mining district

District name Marsh'S Flat Area

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Edyth R. Banta And Nino Chalemor, And The Turlock And Modes To Irrigation District
    Home office 40 Lane Ct., Oakland, Ca. 94611

Production statistics

  • Year 1918
    Period 1916-1918
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^Ore Varied Bet. 36-44% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 40wt-pct

Comments on the workings information

  • WORKINGS CONSIST OF 8-9 SMALL OPEN CUTS AND CAVED SHAFTS WHICH STRIKE N15W OVER A DISTANCE OF 120 M. THE SHAFTS ARE USUALLY 8-15 M DEEP. (1975).

Reference information

Bibliographic references

  • Deposit

    STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED

  • Deposit

    CATER, F.W. JR., 1948, CDMG BULL 134, PART 3, CHAPT. 1, P. 17, 18.

  • Production

    STINSON, 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED

General comments

Subject category Comment text
Deposit FROM THE SIZE AND DISTRIBUTION OF WORKINGS, THE ORE ZONE HAS THE ABOVE DIMENSIONS

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.