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  3. Mineral Resource Data System (MRDS)

Calaveras - Columbus

Past Producer in Calaveras county in California, United States with commodities Gold, Silver, 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. 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 10102802
MRDS ID M006872
Record type Site
Current site name Calaveras - Columbus
Alternate or previous names Amador - Columbus, Columbus
Related records 10187344

Geographic coordinates

Geographic coordinates: -120.56823, 38.4138 (WGS84)
Elevation 640
Relative position BY MOKELUMNE RIVER 2 1/2 MI NW OF WEST POINT

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

West Point(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 Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 007N 013E 32 California

Comments on the location information

  • UTM ACC CTR OF S 1/2 SEC

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Tertiary

Comments on the commodity information

  • SOME OF ORE IS HIGH GRADE, ABUNDANT SULFIDES

Materials information

Materials Type of material
Gold Ore
Pyrrhotite Ore
Quartz Gangue

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) -120.56823, 38.4138
ListMap

Economic information

Ore body information

  • Strike N
    Dip 70 W
    Thickness 1.52M

Economic information about the deposit and operations

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

Comments on the production information

  • ACTIVE 1892 - 1910 , 1921 - 1927 , 1932 - 1935 . NO PRODUCTION RECORD FOUND.

Workings at the site

  • Type of workings Underground
    Area 32.376HA

Comments on the workings information

  • DEVELOPED BY 500 FT CROSSCUT EASTWARD TO VEIN WITH 400 FT N. DRIFT AND 400 FT S. DRIFT. 90 FT WINZE ON N DRIFT WITH 50 FT N. DRIFT AND 150 FT S. DRIFT OFF WINZE

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B., LYDON, P.A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF.; COUNTY REPORT 2 ; CALIF. DIV. OF MINES AND GEOLOGY, P. 38 - 39 , 142 AND PL B

  • Deposit

    LOGAN, C.A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 32 , NO. 3 ; DIV. OF MINES, P. 246 - 7 , 301

  • Production

    CLARK ( 1962 )

General comments

Subject category Comment text
Deposit VEIN, 2 - 5 FT THICK

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.