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  3. Mineral Resource Data System (MRDS)

El Dorado

Past Producer in Plumas county in California, United States with commodities Copper, Lead, Silver
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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. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Land status
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10103003
MRDS ID M020833
Record type Site
Current site name El Dorado
Alternate or previous names Dufay
Related records 10116183

Geographic coordinates

Geographic coordinates: -120.14102, 39.90099 (WGS84)
Elevation 1859
Relative position 8 MILES NORTH OF CHILCOOT

Site location context

Political divisions (FIPS codes)

Plumas(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Frenchman Lake(quadrangle 1:24,000 scale)

Portola(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Fork Feather(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Plumas National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Plumas

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 024N 016E 25 California

Commodities

Commodity Importance
Copper Primary
Lead Secondary
Silver Secondary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Galena Ore
Malachite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -120.14102, 39.90099
ListMap

Economic information

Ore body information

  • Strike EAST
    Dip 55 N
    Thickness 1.22M
    Length 914.4M

Controls for ore emplacement

  • Fissures

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1909 , 1915

Land status

Ownership category National Forest

Comments on the production information

  • ONLY RECORDED PRODUCTION WAS SMALL SHIPMENT IN 1915 , CONTAINING 5.56 % PB, AND 2.23 OZ AG/TON. 1909 , ONE CAR OF ORE ASSAYED 56 % CU, IT WAS SHIPPED.

Workings at the site

  • Type of workings Underground
    Length 73.15M
    Overall depth 15.24M

Comments on the workings information

  • 60 FT. CROSS CUT TUNNEL WHICH CUTS VEIN 50 FT. BELOW OUTCROP. A DRIFT TO THE EAST FOLLOWED VEIN FOR 155 FT. 500 FT. SOUTH OF MAIN WORKINGS IS A VEIN WITH A 25 FT. TUNNEL.

Reference information

Bibliographic references

  • Deposit

    GOODWIN, J.G., 1957 , LEAD AND ZINC OF CALIF.; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NOS. 3 & 4 ; DIV. OF MINES, P. 595

  • Deposit

    MAC BOYLE, E., 1920 , PLUMAS COUNTY; 16 TH REPT. STATE MIN.; CALIF. MIN. BUR., P. 55

  • Production

    GOODWIN, J.G., 1957

General comments

Subject category Comment text
Deposit DEPOSIT CONSISTS OF A SERIES OF QUARTZ FISSURE - VEINS
Deposit MOHAWK MINES ADJOIN ON THE NORTH. COMPRISED OF 100 ACRES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1978 Fraticelli, L. A. (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.