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

Geologic information

Identification information

Deposit ID 10043705
MRDS ID M100610
Record type Site
Current site name Phoenix Mine

Geographic coordinates

Geographic coordinates: -120.49989, 37.91964 (WGS84)
Elevation 305
Relative position APPROX. 10.5 MILES SW OF SONORA, 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)

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 Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001N 013E 24 S2 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Alteration

  • (Local) Serpentinization Of Host Rock

Analytical data

Result ORE WAS 34 AND 37.2% CR2O3

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
    Stratigraphic age (youngest) Late Jurassic

Economic information

Ore body information

  • General form LENSE
    Strike N 80 E
    Dip 90

Comments on the geologic information

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

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1918

Mining district

District name Peoria Flat Area

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Hastings Brothers
  • Type Owner
    Owner Rosasco

Comments on the workings information

  • WORKINGS CONSISTED OF A CAVED SHAFT AND SEVERAL SMALL OPEN CUTS.

Reference information

Bibliographic references

  • Deposit

    CATER, F.W. JR., 1948, CDMG BULL 134, PART 3, CHAPT. 1, P. 30

General comments

Subject category Comment text
Deposit CHROMITE OCCURRED AS A HIGH GRADE STREAK IN LOW GRADE BANDED DISSEM. ORE.

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.