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Mammoth Group

Past Producer in Mariposa county in California, United States with commodities Gold, Copper
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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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Workings at the site
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10102909
MRDS ID M009830
Record type Site
Current site name Mammoth Group
Related records 10114933

Geographic coordinates

Geographic coordinates: -120.0132, 37.25271 (WGS84)
Relative position ADJOINS GOODVIEW ON SOUTH

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Illinois Hill(quadrangle 1:24,000 scale)

Merced(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 008S 018E 08,09 California

Commodities

Commodity Importance
Gold Primary
Copper Secondary

Host and associated rocks

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

Nearby scientific data

(1) -120.0132, 37.25271
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1905 , 1907

Ownership information

  • Type Operator
    Owner Leonard And Sidney
    First year 1907

Comments on the production information

  • SOME SULFIDE ORE SHIPPED RAN 20 - 22 % CU. NO PRODUCTION REPORTED

Workings at the site

  • Type of workings Underground
    Length 53.34M
    Overall depth 24.38M

Comments on the workings information

  • 1908 ; EAST VEIN HAD SHAFT 80 FT. DEEP, MIDDLE VEIN HAD SHAFTS 20 AND 25 FT. DEEP, WEST VEIN HAD ONE SHAFT 50 FT. DEEP.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E. AND CLIFFTON, G. H., 1957 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY, CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 1 & 2 , P. 229 .

  • Deposit

    ERIC, J. H., 1948 , COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 268

  • Production

    %RIC, J. H., 1948 , P. 268 (SEE REF.)

General comments

Subject category Comment text
Deposit THREE STEEPLY DIPPING VEINS WITHIN ZONE 600 FT. WIDE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JUL-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.