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  3. Mineral Resource Data System (MRDS)

Mammoth

Past Producer in Tuolumne county in California, United States with commodity Gold
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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. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10077882
MRDS ID W025951
Record type Site
Current site name Mammoth
Alternate or previous names Webster, Orcutt
Related records 10287247

Geographic coordinates

Geographic coordinates: -120.38544, 37.85381 (WGS84)
Elevation 229
Relative position ABOUT 3 MILES S.E. OF CHINESE CAMP, ON THE E. SIDE OF WOODS CREEK, JUST N. OF WHERE IT ENTERS DON REDRO RESERVOIR

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chinese Camp(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)

Geographic areas

Country State County
United States California Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001S 014E 13 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Economic information

Ore body information

  • Strike N 45 W
    Dip 65 NE
    Thickness 9.14M

Comments on the geologic information

  • GEOL.DESC: HANGING WALL IS SLATE, FOOTWALL IS GREENSTONE; GOUGE SEAMS UP TO 6 FT. THICK; MASSIVE QUARTZ VEIN AS THICK AS 30 FT.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Mother Lode

Comments on the workings information

  • 4 CROSSCUT ADITS ABOVE ONE ANOTHER, THE LOWEST AND LONGEST BEING 675 FT., 500 FT BELOW OUTCROP; WINZE 430 FT ON THIS ADIT, ALONG GOUGE AND MASSIVE QUARTZ ON HANGING WALL.

Reference information

Bibliographic references

  • Deposit

    CRAWFORD, J.J., 1896 , THIRTEENTH REPT. OF THE STATE MINERALOGIST: CMB REPT. 12 , P. 484

  • Deposit

    LOGAN, C.A., 1934 , MOTHER LODE GOLD BELT OF CAL: CDM BULL. 108 , P. 168

General comments

Subject category Comment text
Deposit THIS MINE WAS INCLUDED IN THE HOLDINGS WITH THE REPUBLICAN MINE IN LATER YEARS. PRINCIPAL DEVELOPMENT WAS IN THE MID 1890'S.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1978 Albers, J.; Tatkin, T. 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.