1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Combination

Past Producer in Mariposa 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. Economic information about the deposit and operations
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10030999
MRDS ID M009535
Record type Site
Current site name Combination
Related records 10163707

Geographic coordinates

Geographic coordinates: -120.1496, 37.62686 (WGS84)
Relative position 6 1/2 MI SE OF COULTERVILLE

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Coulterville(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Merced(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(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 Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 003S 017E 31 California

Comments on the location information

  • SW 1/4 UTM EST

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • POCKETS OF HIGH GRADE ORE

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -120.1496, 37.62686
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1933 - 1949

Ownership information

  • Type Operator
    Owner George W. And Bessie L. Welch.

Comments on the production information

  • INTERMITTENT MODERATE PRODUCTION 1933-49, CHIEFLY FROM POCKETS OF HIGH-GRADE ORE. INACTIVE IN SEPT. 1954.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., & GRAY, H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIF.: CALIF. JOUR. MINES & GEOL., VOL. 53 , NOS. 1 & 2 , P. 251

  • Production

    BOWEN AND GRAY, 1957

General comments

Subject category Comment text
Deposit POCKET, VEIN
Deposit PROPERTY CONSISTS OF THREE UNPATENTED CLAIMS. USGS QUAD. COULTERVILLE SHOWS 2 UNIDENTIFIED PROSPECTS IN APPROX. SW1/4 NW1/4 & ONE IN SE1/4 NE1/4 (NOT STANDARD SECTION).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-DEC-1978 Hayden, F. (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.