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  3. Mineral Resource Data System (MRDS)

Geary

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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  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 10031144
MRDS ID M009741
Record type Site
Current site name Geary
Alternate or previous names Geare
Related records 10261307

Geographic coordinates

Geographic coordinates: -120.02154, 37.55437 (WGS84)
Relative position 3 1/2 MI. NNE OF MOUNT BULLION

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bear Valley(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)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 018E 30 California

Comments on the location information

  • SE 1/4 , ADJOINS NUTMEG MINE ON THE SOUTH. UTM EST.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Nearby scientific data

(1) -120.02154, 37.55437
ListMap

Economic information

Ore body information

  • General form TABULAR
    Strike N 20 W
    Dip 80 NE
    Thickness 1.22M

Comments on the geologic information

  • GEOL.DESC: VEIN 3 - 4 FT. THICK; APPARENTLY SEVERAL CUTTER VEINS AND AT LEAST ONE MINOR PARALLEL VEIN. WALL ROCKS ARE SHEARED, SOMEWHAT PLATY PYX ANDESITE GREENSTONES. GEARY VEIN IS THE SAME ONE THAT CROSSES THE NUTMEG MINE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years - 1938

Mining district

District name Whitlock

Ownership information

  • Type Operator
    Owner Permit Mining Co.

Comments on the production information

  • LITTLE RECORD OF EARLY PRODUCTION DURING EXPLORATION IN 1938, A SMALL TONNAGE OF ORE WAS SHIPPED WHICH YIELDED 0.38 OZ. OF GOLD AND ABOUT 0.1 OZ. OF SILVER PER TON. LITTLE WORK HAS BEEN DONE SINCE THAT TIME AND IN 1954 THERE WAS NO EVIDENCE OF ANY RECENT ACTIVITY.

Workings at the site

  • Type of workings Surface/Underground
    Area 8.094HA

Comments on the workings information

  • TWO SHAFTS 160 AND 70 FT. DEEP, RESPECTIVELY, ABOUT 300 FT. APART; DRIFTS. FIRST WORKED BY SERIES OF OPEN CUTS.

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. 101 - 102 , 263 .

  • Deposit

    JULIHN, C. E., & HORTON, F. W., 1940 , MINERAL RESOURCES SURVEY OF THE US: US BUREAU OF MINES BULL. 424 , P. 152 .

  • Production

    BOWEN AND

General comments

Subject category Comment text
Deposit ONE PATENTED CLAIM
Deposit VEINS, ORE SHOOTS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-1979 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.