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Eureka I

Past Producer in Mariposa 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. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10102922
MRDS ID M009916
Record type Site
Current site name Eureka I
Alternate or previous names Eureka 1 & 2

Geographic coordinates

Geographic coordinates: -119.86126, 37.52354 (WGS84)
Elevation 914
Relative position 6 1/2 MI. NE OF MARIPOSA

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Buckingham Mountain(quadrangle 1:24,000 scale)

Yosemite Valley(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 019E 02 California

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • SAMPLES AVE. 1.26 OZ/TON. RICH STREAK IN CENTER OF VEIN.

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

Economic information

Ore body information

  • Strike E
    Dip NEAR VERT
    Thickness 0.61M

Comments on the geologic information

  • GEOL.DESC: VEIN 18 IN. TO 2 FT. THICK

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1927 - 1940

Ownership information

  • Type Operator
    Owner Russell G. Fournier

Comments on the production information

  • PRODUCED SEVERAL HUNDRED TONS OF ORE BETWEEN 1927 AND 1940 THAT AVERAGED 0.845 OZ. OF GOLD AND 0.32 OZ. OF SILVER PER TON.

Comments on the workings information

  • 3 ADITS, THE LOWEST 150 FT. BELOW HIGHEST, EXTENDS 410 FT. THE 2ND, 100 FT. BELOW TOP ADIT, EXTENDS 300 FT. TOP ADIT EXTENDS 30 FT.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., & GRAY, H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIF.: CALIF. JOUR. MINES & GEOL., VOL. 53 , NOS. 1 & 2 , P. 258 .

  • Deposit

    JULIHN, C. E., & HORTON, F. W., 1940 , MINERAL RESOURCES SURVEY OF THE US: US BUREAU OF MINES BULL. 424 , P. 153 .

  • Deposit

    LAIZURE, C. MCK., 1935 , CURRENT MINING ACTIVITIES IN THE SAN FRANCISCO DISTRICT WITH SPEC. REF. TO GOLD: CALIF. JOUR. MINES & GEOL., VOL. 31 , NO. 1 , P. 32 - 33 .

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-1979 Hayden, F. (Albers, J.) 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.