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  3. Mineral Resource Data System (MRDS)

Eureka

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. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10077933
MRDS ID W026013
Record type Site
Current site name Eureka
Alternate or previous names Eureka & Grizzly
Related records 10165961

Geographic coordinates

Geographic coordinates: -120.2771, 37.8227 (WGS84)
Elevation 572
Relative position ABOUT 1/2 MILE N.W. OF PRIEST, BETWEEN OLD PRIEST GRADE AND STATE HWY 120 .

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 35 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Pyrite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.2771, 37.8227
ListMap

Economic information

Ore body information

  • Strike NW
    Dip 80 - 90 NE
    Thickness 0.61M

Comments on the geologic information

  • GEOL.DESC: GOLD ORE FOUND IN BLACK SLATE, AT CONTACT OR NEAR FELSITE DIKES WHICH CUT THE FORMATION. CONSIDERABLE ORE ALSO FOUND ALONG A FAULT THAT DISLOCATED A SMALL QUARTZ VEIN.

Economic information about the deposit and operations

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

Comments on the workings information

  • SEVERAL ADITS THE LONGEST WAS 300 FT.; SEVERAL SHORT DRIFTS, WINZES, AND STOPES.

Reference information

Bibliographic references

  • Deposit

    CRAWFORD, J.J., 1896 , THIRTEENTH REPT. OF THE STATE MINERALOGIST: CMB REPT. 13 , P. 480

  • Deposit

    LOGAN, C.A., 1949 , MINES AND MIN. RES. OF TUOLUMNE COUNTY: CDMG REPT. 45 , P. 65

General comments

Subject category Comment text
Deposit THE TWO CLAIMS ON THIS MINE ARE EUREKA AND GRIZZLY, BOTH LOCATED IN 1894 . WORK WAS INTERMITTANT.
Deposit POCKET MINE

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.

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.