1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Dean Mine

Producer in Calaveras county in California, United States with commodity Chromium
Map
XML
JSON
KML
C
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. Reporter information

Geologic information

Identification information

Deposit ID 10109076
MRDS ID M004642
Record type Site
Current site name Dean Mine
Related records 10235709

Geographic coordinates

Geographic coordinates: -120.55211, 37.95158 (WGS84)
Relative position 1100' NW OF MAYFLOWER MINE ABOUT HALF WAY UP NW SLOPE FROM BOTTOM OF BEAN GULCH IN THE NW1/4 NW1/4 SEC.

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

New Melones Dam(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)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001N 013E 09 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -120.55211, 37.95158
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: DEPOSIT CONSISTS OF A FEW SMALL PODS OF MASSIVE CHROMITE IN GRAY SERPENTINE; ORE IS BLACK, NEARLY PURE,MEDIUM-GRAINED CHROMITE CONTAINING MINOR AMOUNTS OF KAMMERERITE. NUMEROUS SMALL VEINS OF MAGNESITE AND OPAL CUT THE SURROUNDING SERPENTINE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Mining district

District name French Creek Area

Comments on the production information

  • ABT. 10 TONS CONTAINING 45% CHROMIC OXIDE

Comments on the workings information

  • OPERATED DURING FIRST WORLD WAR; NO WORK DONE SINCE THAT TIME. WORKINGS CONSIST OF 3 SMALL OPEN-CUTS & A DRIFT

Reference information

Bibliographic references

  • Deposit

    CALIF. B.134, PT.III, CH. 2, P. 42 AND PL. 5; B. 145, PL. 2; REPT. 21, P. 165

  • Deposit

    CALIF. COUNTY REPT. NO. 2, P. 129 AND PL. D

  • Deposit

    MAP GP-561(PLOTTED ON LINE BY SEC.4&9)

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.