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  3. Mineral Resource Data System (MRDS)

Williams Prospect

Occurrence in El Dorado county in California, United States with commodity Tungsten
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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. Reporter information

Geologic information

Identification information

Deposit ID 10094235
MRDS ID D000899
Record type Site
Current site name Williams Prospect
Related records 10162438

Geographic coordinates

Geographic coordinates: -120.71769, 38.66657 (WGS84)
Relative position 1 MILE NW OF BUCK'S BAR

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Camino(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Cosumnes(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 009N 011E 01 California

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Pyrite Ore
Scheelite Ore
Calcite Gangue
Epidote Gangue
Garnet Gangue
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.71769, 38.66657
ListMap

Economic information

Ore body information

  • General form PINCH AND SWELL

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on the production information

  • 1956, SEVERAL TONS OF ORE WERE MINED FOR MILLING TEST. ANALYSES SHOW PART OF DEPOSIT TO CONTAIN 1-2% WO3

Comments on the workings information

  • OPEN CUT 20 FT. LONG, 20 FT. WIDE AND 15 FT. HIGH

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B. AND CARLSON, D.W., 1956; MINES AND MINERAL RESOURCES, EL DORADO COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 52, NO. 4; DIV. OF MINES, P. 440.

  • Deposit

    LEMMON, D.M. AND TWETO, O.L., 1962; TUNGSTEN IN THE US; USGS MAP, MR-25.

  • Production

    CLARK AND CARLSON, 1956

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1974 Elliott, James E. U.S. Geological Survey
Updater 01-MAR-1979 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 09-JUN-1995 Mosier, Dan 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.