1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Star & Excelsior Mine

Occurrence in Calaveras county in California, United States with commodities Copper, Gold, Zinc
Map
XML
JSON
KML
C
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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10028629
MRDS ID M005719
Record type Site
Current site name Star & Excelsior Mine
Related records 10211313

Geographic coordinates

Geographic coordinates: -120.72879, 37.91491 (WGS84)
Relative position 6 1/2 MILES SW. OF COPPEROPOLIS, 1 MILE SOUTH OF NAPOLEON MINE.

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Copperopolis(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower San Joaquin River(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 001N 011E 24 California

Commodities

Commodity Importance
Copper Primary
Gold Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Chrysocolla Ore
Malachite Ore
Pyrite Ore
Sphalerite Ore
Barite Gangue

Alteration

  • (Local) Kaolinization, Pyritization, Silicification

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -120.72879, 37.91491
ListMap

Economic information

Ore body information

  • Strike N 30 W
    Dip 75 E
    Thickness 15.24M
    Length 106.68M

Controls for ore emplacement

  • Shear - Brecciated Zone In Porphyry

Comments on the geologic information

  • GEOL.DESC: WORKINGS IN QUARTZ AND FELDSPAR PORPHYRY WITHIN FEW HUNDRED FEET OF CONTACT WITH GREENSTONE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on the production information

  • ACTIVE 1914 AND 1920'S

Comments on the workings information

  • OLD CAVED 100 FT. SHAFT, AND A NEWER SHALLOWER OPEN SHAFT. TWO OPEN WEST - EXTENDING CROSSCUT ADITS TO THE SOUTH, AND OPEN CUTS.

Reference information

Bibliographic references

  • Deposit

    CLARK, W. B. AND LYDON, P. A., 1962 , MINES AND MINERALS RESOURCES OF CALAVERAS COUNTY, CALIFORNIA; COUNTY REPT. 2 ; CALIF. DIV. MINES AND GEOLOGY, P. 32 .

  • Deposit

    HEYL, G. R., 1948 , ZINC - COPPER MINES OF THE QUAIL HILL AREA, CALAVERAS COUNTY, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 125 - 126 .

General comments

Subject category Comment text
Deposit DEPOSIT CONSISTS OF A ZONE OF PYRITIZATION, KAOLINIZATION AND SILICIFICATION CAPPED BY GOSSAN. ANOTHER ZONE IS 200 FT. EAST.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. U.S. Geological Survey
Updater 01-JUN-1978 Fraticelli, L. A. (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.