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Mammoth

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. Economic information about the deposit and operations
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10006830
MRDS ID C007393
Record type Site
Current site name Mammoth
Related records 10115117

Geographic coordinates

Geographic coordinates: -120.98603, 38.75212 (WGS84)
Elevation 366
Relative position 1 MI. NW OF DEER VALLEY SCHOOL

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Coloma(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)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 010N 009E 03,04 California

Comments on the location information

  • UTM ACC NW 1/4 SEC 3 NE 1/4 SEC 4

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • POCKET VEIN, 3 - 4 FT THICK PRODUCED IN 1860

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Analytical data

Result 1 1/2 - 2 % SULFIDES

Host and associated rocks

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

Nearby scientific data

(1) -120.98603, 38.75212
ListMap

Economic information

Ore body information

  • Strike NE
    Dip NW
    Thickness 1.22M
    Length 60.96M
    Depth to top 0M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1860

Comments on the production information

  • ACTIVE 1860 , DUMP WORKED IN 1934

Workings at the site

  • Type of workings Underground
    Area 3.642HA
    Length 60.96M

Comments on the workings information

  • DEVELOPED BY 75 FT CROSSCUT ADIT AND 120 FT DRIFT ON PORPHYRY VEIN

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 516 AND PL 10 .

  • Deposit

    CRAWFORD, J. J., 1896 , EL DORADO COUNTY: CALIF. MIN. BUR. 13TH REPT. STATE MINERALOGIST, P 150 .

  • Deposit

    LOGAN, C. A., 1938 , MIN. RESOURCES OF EL DORADO CO.: CALIF. JOUR. OF MINES AND GEOL., VOL. 34 , NO. 3 , PG. 237 , 264 AND PL II.

  • Production

    CLARK ( 1956 )

General comments

Subject category Comment text
Deposit VEIN, 3 - 4 FT. THICK , ANOTHER 5 FT. THICK STRIKES W, DESCRIBED AS POSPHYRY VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Mateik, R.; 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.