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  3. Mineral Resource Data System (MRDS)

Stone Mine

Producer in Calaveras 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. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10109155
MRDS ID M006015
Record type Site
Current site name Stone Mine
Alternate or previous names Coffer, Trask, Longton
Related records 10235775

Geographic coordinates

Point of reference Centroid
Geographic coordinates: -120.6041, 38.0113 (WGS84)
Relative position Original record had no geographic coordinates; these coordinates were derived from the PLSS description provided.

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Angels Camp(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Calaveras(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002N 012E 23,24 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

Centroid (1) -120.6041, 38.0113
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: LENSES OF ORE; COUNTRY ROCK IS SHEARED, TALCOSE SERPENTINE; ORE FROM DUMP IS MASSIVE, MEDIUM-TO COARSE-GRAINED CHROMITE. ALL ORE BODIES ARE NEAR E CONTACT OF THE SERPENTINE.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Mining district

District name Black Creek Area

Comments on the production information

  • 92 LONG TONS; RESERVES PROBABLY SMALL LAST ACTIVE DURING WWI. 5 SHAFTS AND 2 DRIFTS.

Reference information

Bibliographic references

  • Deposit

    CALIF. B. 134, PT. III, CH. 2, P. 46 AND PL. 5

  • Deposit

    CALIF. SP. REPT. 41, PL. 3 AND P. 52

  • Deposit

    COUNTY REPT. NO. 2, P. 130 AND PL. D

General comments

Subject category Comment text
Deposit ADD. REF. NO.4. USGS MAP GP-561

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-72 Gere, W. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.