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  3. Mineral Resource Data System (MRDS)

Commodore

Past Producer in Calaveras 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. Workings at the site
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10102657
MRDS ID M006080
Record type Site
Current site name Commodore
Alternate or previous names Golden Gate
Related records 10211508

Geographic coordinates

Geographic coordinates: -120.69879, 38.20991 (WGS84)
Elevation 247
Relative position 1 MI NE OF SAN ANDRES

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Andreas(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Calaveras(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 004N 012E 07 California

Comments on the location information

  • UTM ACC SW 1/4 SEC

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Dolomite Ore
Gold Ore
Ankerite Gangue
Quartz Gangue
Serpentine Gangue

Analytical data

Result ORE AVERAGED $4 PER TON AU (MILL TEST 1900)

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) -120.69879, 38.20991
ListMap

Economic information

Comments on the geologic information

  • COMMODORE EAST VEIN IS REPORTED AS A QTZ DIORITE INTRUSIVE, SECTION FROM W TO E: AMPHIBOLITE SCHIST, ANKERITE, A QUARTZ VEIN; WIDE BODY OF ANKERITE; SERPENTINE A MINERALIZED QUARTZ DIORITE INTRUSION WHICH IS COMMODORE VEIN; SERPENTINE AND DIABASE. ON HANGING WALL SIDE OF QTZ-DIORITE IS A 4 FT ZONE OF CRUSHED MATERIAL FROM WHICH RHOMBIC XTALS OF DOLOMITE CONTAIDED VISIBLE GOLD PARTICLES

Economic information about the deposit and operations

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

Comments on the production information

  • WORKED 1899 - OCT. 1900 , JULY 1933 - SEPT 1934 $7 PER TON ORE ENCOUNTED TO NORTH AT 300 FT LEVEL NO PRODUCTION RECORD FOUND

Workings at the site

  • Type of workings Underground
    Area 7.689HA

Comments on the workings information

  • DEVELOPED BY 300 FT SHAFT WITH SEVERAL LEVELS, DRIFTS AND CROSS CUTS WHICH INCLUDE 450 FT ADIT, 80 , 200 & 300 FT LEVELS WITH WORKINGS SHAFT VERTICLE FOR FIRST 80 FT, REMAINDER IS 75 DEG DIP

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 51 , 145 , AND PL B

  • Deposit

    LOGAN, C. A., 1934 , THE MOTHER LODE GOLD BELT OF CALIF: CALIF DIV. OF MINES, BULL. 108 , P 137 - 138

  • 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 243 & 301

  • Production

    CLARK ( 1962 )

General comments

Subject category Comment text
Deposit VEIN, COMMODORE E VEIN IS REPORTED AS A QTZ DIORITE INTRUSIVE, A SECTION FROM W TO E; AMPHIBOLITE SCHIST, ANKERITE A QUARTZ VEIN, WIDE BODY OF ANKERITE, SERPENTINE, A MINERALIZED QUARTZ DIORITE INTRUSION WHICH IS COMMODORE VEIN, SERPENTINE AND DIABASE. ON HANGING WALL SIDE OF QTZ-DIORITE IS A 4 FT ZONE OF CRUSHED MATERIAL FROM WHICH RHOMBIC XTALS OF DOLOMITE CONTAINED VISIBLE PARTICLES OF GOLD

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Mateik, R.; Albers, John P. U.S. Geological Survey MODIFIED LAT-LONG BASED UPON TOWNSHIP, RANGE, SECTION CONVERSION PROGRAM
Updater 27-JAN-1998 Boyce, E. G. 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.