Crescent Copper Group

Past Producer in Riverside county in California, United States with commodities Copper, Silver, Gold
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. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10077109
MRDS ID W024546
Record type Site
Current site name Crescent Copper Group
Alternate or previous names Badger State Group, Eagle Nest
Related records 10115994, 10164624

Geographic coordinates

Geographic coordinates: -114.75913, 33.86894 (WGS84)
Elevation 463
Relative position 7 MILES SW OF INCA SIDING, EAST SLOPE OF MCCOY MTS.

Site location context

Political divisions (FIPS codes)

Riverside(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Inca(quadrangle 1:24,000 scale)

Blythe(quadrangle 1:100,000 scale)

Salton Sea(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Imperial Reservoir(hydrologic unit)

Lower Colorado(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Riverside

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 004S 020E 29,30 California

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Chalcocite Ore
Cuprite Ore
Malachite Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -114.75913, 33.86894

Economic information

Ore body information

  • Strike N 20 E
    Dip 70 E
    Width 0.61M

Controls for ore emplacement

  • Shear Zone, Fractures

Comments on the geologic information

  • GEOL.DESC: SCHIST BETWEEN GRANITE WALLS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1907 - 1909 , 1916

Mining district

District name Ironwood

Production statistics

  • Year 1909
    Period - 1909
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^Au .4 Oz/Ton, Ag: 8 Oz/Ton Cu: 23.42 % Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Gold Gold 226g/mt
    Major Ore Copper Copper 23wt-pct
    Minor Ore Silver Silver 11g/mt

Comments on the production information

  • TOTAL PRODUCTION HAS BEEN $7000

Workings at the site

  • Type of workings Underground
    Length 914.4M

Comments on the workings information

  • PRINCIPAL DEVELOPMENT ON EAGLE NEST NO. 7 CLAIM: TUNNEL DRIVEN EAST FOR 200 FT. CUT A SERIES OF PARALLEL VEINS 75 FT. FROM PORTAL. NUMEROUS OTHER WORKINGS ON PROPERTY TOTALING 3000 FT.

Reference information

Bibliographic references

  • Deposit

    ERIC, J.H., 1948 : COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 292

  • Deposit

    TUCKER, W.B. AND SAMPSON, R.J., 1945 ; MINERAL RESOURCES, RIVERSIDE COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 41 , NO. 3 ; DIV. OF MINES, P. 124 - 125

  • Deposit

    OF INCA SIDING, ON THE SANTA FE RRELEV 1000-1500 . ASO IN SEC 30 4S/20E

  • Production

    TUCKER, W.B., 1945 , P. 124 - 125

General comments

Subject category Comment text
Deposit SHEAR ZONE IN GRANITE 20 - 30 FT. WIDE ZONE STRIKES N 70 W, DIPS 35 N , HAS LENGTH ON SURFACE OF 12,000 FT. MINERALIZATION OCCURS IN SERIES OF CROSS FRACTURES WITHIN SHEAR ZONE. VEINS ARE OF QUARTZ-CALCITE.
Deposit SAID TO HAVE FAVORABLE POSSIBILITIES

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1979 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.

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.