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  3. Mineral Resource Data System (MRDS)

El Dorado

Past Producer in Amador 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. Land status
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10076471
MRDS ID W023489
Record type Site
Current site name El Dorado
Related records 10211643

Geographic coordinates

Geographic coordinates: -120.81824, 38.42407 (WGS84)
Elevation 305
Relative position AT AMADOR CITY, ON AMADOR CREEK

Site location context

Political divisions (FIPS codes)

Amador(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Amador City(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Mokelumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Amador

Public Land Survey System information

Meridian Township Range Section Fraction State
007N 010E 36 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Analytical data

Result ORE CARRIES LARGE PERCENTAGE OF SULFIDES ASSAYING FROM $50 TO $80/TON
Result ORE SAID TO BE LOW-GRADE ASSAYING $4 + $6/TON.

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

Nearby scientific data

(1) -120.81824, 38.42407
ListMap

Economic information

Ore body information

  • General form PINCH AND SWELL TO TABULAR
    Thickness 1.83M

Comments on the geologic information

  • GEOL.DESC: QUARTZ VEIN 4 TO 6 FT THICK; SLATE FOOTWALL, GREENSTONE HANGING WALL

Economic information about the deposit and operations

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

Land status

Ownership category Private

Comments on the workings information

  • INCLINED SHAFT 45 DEGREES, 300 FT.

Reference information

Bibliographic references

  • Deposit

    IRELAND, WM. JR., 1890 , TENTH REPT. OF THE STATE MINERALOGIST: CMB REPT. 10 , P. 99 .

  • Deposit

    TUCKER, W.B., 1914 , AMADOR COUNTY: CMB REPT. 14 , P. 27

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-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.