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Bright Star

Past Producer in Calaveras county in California, United States with commodities Gold, Lead
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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 10028947
MRDS ID M006226
Record type Site
Current site name Bright Star
Alternate or previous names Black Cat.
Related records 10138761

Geographic coordinates

Geographic coordinates: -120.63045, 38.33463 (WGS84)
Elevation 488
Relative position 6 MI NE OF MOKELUMNE HILL ON SE SLOPE ABOVE MOKELUMNE RIVER

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mokelumne Hill(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 006N 012E 35 California

Comments on the location information

  • UTM ACC NW 1/4 SEC

Commodities

Commodity Importance
Gold Primary
Lead Tertiary

Comments on the commodity information

  • SULFIDES PRESENT

Materials information

Materials Type of material
Galena Ore
Pyrite 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 Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.63045, 38.33463
ListMap

Economic information

Ore body information

  • Strike NE
    Dip SE
    Thickness 3.66M

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 PRIOR TO AND FROM 1924 TO 1934

Workings at the site

  • Type of workings Underground
    Area 48.564HA

Comments on the workings information

  • DEVELOPMENTS CONSIST OF 2 CROSSCUT TUNNELS DRIVEN SOUTHWARD INTO VEIN, 175 FT AND 425 FT IN LENGTH AND CALLED LEVELS NO. 1 AND 2 RESPECTIVELY. ON NO 2 LEVEL THERE IS A 500 FT DRIFT W AND A 400 FT DRIFT EAST. TWO RAISES HAVE BEED DRIVEN FROM NO. 2 LEVEL TO SURFACE

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. 141 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. OOF MINES, P 245 - 6 AND 299

  • Production

    CLARK ( 1962 ), LOGAN ( 1936 )

General comments

Subject category Comment text
Deposit VEIN, VEIN IS 4 - 12 FT THICK WITH 3 OTHER MINOR N STRIKING & W DIPPING VEINS WHICH AVERAGE 4 FT IN THICKNESS. FOOTWALL IS PORPHYRY, HANGING WALL IS GRANODIORITE IN UPPER WORKINGS AND SLATE IN LOWER WORKINGS
Deposit COMPRISES EIGHT UNPATENTED CLAIMS; BRIGHT STAR, AMERICAN, JULY FIND, GOLD BULGER, JACQUIN, HILL TOP. ; INFO.SRC : 1 PUB LIT

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.