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  3. Mineral Resource Data System (MRDS)

Duffield

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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10034534
MRDS ID M021351
Record type Site
Current site name Duffield
Related records 10190781

Geographic coordinates

Geographic coordinates: -120.23128, 37.99881 (WGS84)
Elevation 960
Relative position AT ARRASTRAVILLE, 2 1/2 MILE NE OF TUOLUMNE.

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tuolumne(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 002N 016E 28 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.23128, 37.99881
ListMap

Economic information

Ore body information

  • Strike N
    Dip 75 W
    Thickness 0.46M

Comments on the geologic information

  • GEOL.DESC: GRANODIORITE FOOTWALL, SLATE ON HANGING WALL. VEIN HAS AVERAGE THICKNESS OF 12 INCHES.

Economic information about the deposit and operations

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

Workings at the site

  • Type of workings Underground
    Area 14.165HA

Comments on the workings information

  • ADIT 130 FT. TO N. DRIFT 325 FT.; WINZE 80 FT. ON VEIN BELOW ADIT.

Reference information

Bibliographic references

  • Deposit

    CRAWFORD, J.J., 1896 , THIRTEENTH REPT. OF THE STATE MINERALOGIST: CMB REPT. 13 , P 477

  • Deposit

    TUCKER, W.B., 1914 , TUOLUMNE COUNTY: CMB REPT. 14 , P. 144

Reporter information

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