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  3. Mineral Resource Data System (MRDS)

California Gold and Copper

Past Producer in Nevada county in California, United States with commodities Copper, Gold, Silver
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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. Mining district
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10102941
MRDS ID M010811
Record type Site
Current site name California Gold and Copper

Geographic coordinates

Geographic coordinates: -121.25798, 39.15878 (WGS84)
Elevation 183
Relative position 2 MILES NORTH UP SPENCEVILLE

Site location context

Political divisions (FIPS codes)

Nevada(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Smartsville(quadrangle 1:24,000 scale)

Yuba City(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Bear(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Nevada

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 006E 12,13 California

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary

Materials information

Materials Type of material
Bornite Ore
Malachite Ore
Quartz Gangue

Analytical data

Result REPORTED CONTENT OF 6 % CU, SOME AU, AG

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) -121.25798, 39.15878
ListMap

Economic information

Ore body information

  • Strike N
    Dip E
    Thickness 1.22M

Economic information about the deposit and operations

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

Mining district

District name Spenceville

Ownership information

  • Type Operator
    Owner D. L. Evans
    First year 1941

Comments on the production information

  • NO PRODUCTION REPORTED

Comments on the workings information

  • SIXTEEN TO ONE CLAIM: 30 FT. SHAFT ON A 20 FT. VEIN, CARRYING 7 - 14 % CU. JACKSON CLAIM: 450 FT. TUNNEL ON LEDGE, CARRYING 8 % CU, $10 AU; VEIN IS 6 - 7 FT. IN THICKNESS. CROPPINGS ARE FOUND BEYOND THE BREAST OF THE TUNNEL, ANOTHER SHAFT 50 FT. DEEP IN ORE

Reference information

Bibliographic references

  • Deposit

    AUBURY, L.E., 1908 , COPPER RESOURCES IN CALIFORNIA BULL. 50 ; CALIF. MIN. BUR., P. 195 , 197 , 203

  • Deposit

    MAC BOYLE, E., 1918 , MINES AND MINERAL RESOURCES OF NEVADA COUNTY, 16 TH REPT. STATE MINERALOGIST: CA. MIN. BUR., P. 84

General comments

Subject category Comment text
Deposit COMPRISES 65 ACRES. IN 1908 THE HOLDINGS INCLUDED THE JACKSON. SAN FRANCISCO, AMERICAN, ST. LOUIS, PHILADEPHIA, AND SIXTEEN TO ONE CLAIMS. FROM THE ACREAGE NOW SHOWN IT IS APPARENT SOME OF THE CLAIMS HAVE PASSED INTO OTHER HANDS. THE ORE WAS COMPOSED OF MALACHITE, BORNITE, CHALCOPYRITE, IRON PYRITE & QUARTZ.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-NOV-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.