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  3. Mineral Resource Data System (MRDS)

Alma

Past Producer in Amador 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. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10028254
MRDS ID M005127
Record type Site
Current site name Alma
Related records 10187031

Geographic coordinates

Geographic coordinates: -120.78435, 38.34379 (WGS84)
Elevation 457
Relative position ABOUT 1/4 MILE W. OF JACKSON

Site location context

Political divisions (FIPS codes)

Amador(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Jackson(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Mokelumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Amador

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 006 011E 29 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.78435, 38.34379
ListMap

Economic information

Ore body information

  • Depth to top 0M

Comments on the geologic information

  • GEOL.DESC: QUARTZ VEIN BETWEEN SLATE HANGING WALL, DIABASE FOOTWALL; DIABASE BRECCIATED; SLATE BEDDING 200 FT THICK SURROUNDED BY DIABASE; VEIN BRANCHES, CROPPING OUT IN TWO LOCATITES ON THE SURFACE.

Economic information about the deposit and operations

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

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Ralph Mcgee

Comments on the production information

  • NO PRODUCTION RECORDED.

Comments on the workings information

  • VERTICAL SHAFT 420 FT., AT 375 FT. 60 DEGREE INCLINED SHAFT 600 FT., DRIFTS AT BOTTOM OF VERTICAL SHAFT 500 FT.

Reference information

Bibliographic references

  • Deposit

    CRAWFORD, J.J., 1894 , TWELFTH REPT. OF THE STATE MINERALOGIST: CMB REPT. 12 , P. 70 .

  • Deposit

    CRAWFORD, J.J., 1896 , THIRTEENTH REPT. OF THE STATE MINERALOGIST: CMB REPT. 13 , P 66 - 67

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. U.S. Geological Survey
Updater 01-APR-1978 Tatkin, T.; 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.