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Pocahontas

Occurrence in Plumas 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. Land status
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10034134
MRDS ID M020842
Record type Site
Current site name Pocahontas
Related records 10139979

Geographic coordinates

Geographic coordinates: -121.25022, 39.77349 (WGS84)
Elevation 1280
Relative position 7 MILES NE OF BRUSH CREEK

Site location context

Political divisions (FIPS codes)

Plumas(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Soapstone Hill(quadrangle 1:24,000 scale)

Chico(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Fork Feather(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Plumas National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Plumas

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 022N 006E 12 California

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Primary

Materials information

Materials Type of material
Copper Ore
Millerite Ore
Silver Ore
Quartz Gangue

Analytical data

Result $5 AU, $3 AG AND $6 CU FROM VARIOUS OPENINGS.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -121.25022, 39.77349
ListMap

Economic information

Ore body information

  • Strike NE
    Dip 80 E
    Thickness 1.22M
    Length 914.4M

Comments on the geologic information

  • GEOL.DESC: FOOTWALL IS CALAVERAS SLATES, HANGING WALL-PORPHYRY (POSSIBLY SCHISTS), ROCK IN WHICH COPPER BODIES ARE FOUND IS LARGELY EPIDOTE FILLED WITH SMALL GRAINS OF NATIVE COPPER. THE KIDNEYS SHOW LARGE LUMPS OF NATIVE COPPER, WITH RED OXIDE AND CARBONATES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Mining district

District name Granite Basin

Land status

Ownership category National Forest

Comments on the workings information

  • 30 FT. SHAFT AND 40 FT. TUNNEL ON THE POCAHONTAS CLAIM, A 40 FT. INCLINE ON THE MINNEHAHA CLAIM. OTHER WORKS CONSISTS OF SEVEN OPEN CUTS AT INTERVALS OF 100 FT.

Reference information

Bibliographic references

  • Deposit

    CRAWFORD, J.J., 1894 , PLUMAS COUNTY: 12TH REPT. STATE MINERALOGIST; CALIF. MIN. BUR., P. 69

  • Deposit

    MACBOYLE, E., 1918 , PLUMAS COUNTY; 16TH REPT. STATE MIN.; CALIF. MIN. BUR., P. 158

General comments

Subject category Comment text
Deposit FISSURE VEIN WITH GOUGE ON BOTH WALLS.
Deposit MOURNING STAR, GRANITE BASIN, AND COQUETTE MINES ADJOIN. COMPRISED OF 60 ACRES.

Reporter information

Type Date Name Affiliation Comment
Reporter 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.