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Stanislaus River Chrome Mine

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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Production statistics
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10111219
MRDS ID W025926
Record type Site
Current site name Stanislaus River Chrome Mine
Related records 10214823

Geographic coordinates

Geographic coordinates: -120.52628, 37.93074 (WGS84)
Elevation 183

Site location context

Political divisions (FIPS codes)

Tuolumne(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

USBR(Federal land areas administered by USBR)

Geographic areas

Country State County
United States California Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001N 013E 22 California

Comments on the location information

  • MINE APPROX. 100 FT ABOVE THE STANISLAUS RIVER.; PREVIOUS QUAD DESIGNATION = SAN JOSE 1:250000

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Analytical data

Result ORE AVG. 45 % CR2O3

Host and associated rocks

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

Nearby scientific data

(1) -120.52628, 37.93074
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Host Rock Is Highly Sheared.

Ore body information

  • General form LENSE

Comments on the geologic information

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

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1915
Discoverer William Laughlin

Mining district

District name Bean Gulch - French Creek Area Of Calaveras Co.

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner P. Mertz, S. Rosenthal, H. Kiaupat ( Ww I)
  • Type Owner
    Owner Laughlin, William

Production statistics

  • Year 1918
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^45% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Ore Chromium Chromium 45wt-pct

Comments on the workings information

  • WORKINGS CONSISTED OF A 60 FT LONG OPEN CUT AND A TUNNEL 40 FT LONG.

Reference information

Bibliographic references

  • Deposit

    CATER; F.W.JR., 1948, CDMG BULL 134, PART 3, CHAPT.1, P. 30,31

  • Production

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

General comments

Subject category Comment text
Deposit Discovery Year: WW I
Deposit DEPOSIT CONSISTED OF ONE LARGE AND SEVERAL SMALL LENSES.

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.