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  3. Mineral Resource Data System (MRDS)

Bluepoint Claim, Marsh Flats Chrome Assoc. Properties

Occurrence 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. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10043696
MRDS ID M100598
Record type Site
Current site name Bluepoint Claim, Marsh Flats Chrome Assoc. Properties

Geographic coordinates

Geographic coordinates: -120.36433, 37.80603 (WGS84)

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Moccasin(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)

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 001S 015E 31 California

Comments on the location information

  • APPROX. 2,000 FT SOUTH BY EAST OF THE MUM CLAIM (M100197) ON SAME RIDGE, AT A POINT 100-150 FT BELOW THE CREST OF A SOUTH FACING SLOPE.

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore
Talc Gangue
Uvarovite Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.36433, 37.80603
ListMap

Economic information

Ore body information

  • General form POD

Comments on the geologic information

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

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Marsh'S Flat Area

Land status

Ownership category Federal

Ownership information

  • Type Owner
    Owner J. L. Whitney Estate
    First year 1948

Comments on the workings information

  • WORKINGS CONSIST OF THREE SMALL OPEN CUTS SPACED 50-60 FT APART ALONG A LINE TRENDING N 70 W.

Comments on development

  • A SMALL AMT. OF UNMINED ORE REMAINS IN THE PITS AND 10-12 TONS OF ORE MINED IN 1918 IS STACKED ON THE DUMP.

Reference information

Bibliographic references

  • Deposit

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

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.