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  3. Mineral Resource Data System (MRDS)

French

Past Producer in El Dorado 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. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10006850
MRDS ID C007595
Record type Site
Current site name French
Alternate or previous names Nagler
Related records 10162854

Geographic coordinates

Geographic coordinates: -120.91742, 38.896 (WGS84)
Relative position JUST W OF GREENWOOD

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Greenwood(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(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 012N 009E 13 California

Commodities

Commodity Importance
Gold Primary

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

Nearby scientific data

(1) -120.91742, 38.896
ListMap

Economic information

Ore body information

  • Width 60.96M
    Depth to top 0M

Controls for ore emplacement

  • Best Ore From Intersection Of Cross Vein With Ore Vein

Comments on the geologic information

  • SEAM DEPOSIT WITH PORPHYRY TO W AND SLATE TO E

Economic information about the deposit and operations

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

Comments on the production information

  • TOTAL OUTPUT IN EXCESS OF $500,000 , ACTIVE PRIOR 1874 AND DURING 1890'S

Workings at the site

  • Type of workings Surface/Underground
    Area 0.809HA
    Overall length 182.88M

Comments on the workings information

  • SHALLOW SHAFT SUNK IN EARLY DAYS AT VEIN INTERSECTION THEN DEVELOPED BY HYDRAULICKING IN PIT 80 FT. DEEP

Reference information

Bibliographic references

  • Deposit

    CLARK, W. B., AND CARLSON, D. W., 1956 , MINES AND MINERAL RESOURCES OF EL DORADO CO., CALIF.: CALIF. JOUR. OF MINES AND GEOL., VOL. 52 , NO. 4 , PG. 567 .

  • Deposit

    LOGAN, C. A., 1935 , MOTHER LODE GOLD BELT OF CALIF.: CALIF. DIV. OF MINES, BULL. 108 , PG. 45 .

  • Deposit

    LOGAN, C. A., 1938 , MIN. RESOURCES OF EL DORADO CO.: CALIF. JOUR. OF MINES AND GEOL., VOL. 34 , NO. 3 , PG. 261 .

  • Production

    CLARK ( 1956 )

General comments

Subject category Comment text
Deposit SEAM DEPOSIT, SEAM ZONE VEIN - VEIN SHOWED MINERALIZED SCHIST WITH 2 FT. OF SOLID QUARTZ

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Mateik, R.; Albers, John P. U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-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.