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Sebastapol

Past Producer in Sierra county in California, United States with commodity Gold
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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 10086605
MRDS ID X025593
Record type Site
Current site name Sebastapol
Alternate or previous names Extension, Star
Related records 10237508

Geographic coordinates

Geographic coordinates: -120.59547, 39.65821 (WGS84)

Site location context

Political divisions (FIPS codes)

Sierra(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Clio(quadrangle 1:24,000 scale)

Portola(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yuba(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe 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 Sierra

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 021N 012E 23 California

Comments on the location information

  • LAT/LONG ESTIMATED AT CENTER OF LOCAL ACTIVITY.; LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Analytical data

Result LESS THAN 1 PERCENT SULFIDES

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock
  • Host or associated Host
    Rock type Plutonic Rock

Nearby scientific data

(1) -120.59547, 39.65821
ListMap

Economic information

Ore body information

  • Strike E
    Dip 70 N
    Thickness 6.1M

Comments on the geologic information

  • LODE 12 - 20 FT. THICK, NO WELL DEFINED VEIN OF QTZ. AUGITE-PORPHYRY FOOTWALL ALTERED NEAR VEIN. HANGING WALL SAID TO BE THE SAME. 250 FT. WIDE ORE SHOOT.

Economic information about the deposit and operations

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

Comments on the production information

  • BEFORE VEIN DISCOVERED, IN 1912 , IT WAS A RICH PLACER MINE. NO OTHER PRODUCTION RECORD FOUND.

Workings at the site

  • Type of workings Surface/Underground
    Area 24.282HA
    Length 1371.6M
    Overall depth 27.43M

Comments on the workings information

  • 50 FT. X CUT, 250 FT. DRIFT, 1 RAISE 60 FT. TO SURFACE.

Reference information

Bibliographic references

  • Deposit

    AVERILL, C. V., 1942 , MINES AND MINERAL RESOURCES OF SIERRA CO.: CDM CALIF. JOUR. MINES AND GEOL., VOL. 38 , NO. 1 , P. 64 .

  • Deposit

    MACBOYLE, E., 1920 , MINES AND MINERAL RESOURCES SIERRA CO.: CSMB 16TH REPORT STATE MINERALOGIST, DEC. 1918 , P. 116 , 117 .

  • Production

    MACBOYLE, 1920

General comments

Subject category Comment text
Deposit VEIN, ORE SHOOT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1979 Hayden, F. (Albers, J.) U.S. Geological Survey REPLACING LOST LOCATION.
Updater 12-NOV-1997 Oland, G. P. (Orris, Greta J.) U.S. Geological Survey OLAND AND ORRIS MERGED RECORDS
Editor 08-MAY-1998 Mason, George 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.