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  3. Mineral Resource Data System (MRDS)

Petticoat Etal

Past Producer in Calaveras 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. Mining district
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10029345
MRDS ID M006820
Record type Site
Current site name Petticoat Etal
Related records 10235209

Geographic coordinates

Geographic coordinates: -120.50962, 38.34908 (WGS84)
Relative position 3 1/2 MI SSE OF WEST POINT

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rail Road Flat(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Calaveras(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 006N 013E 26 California

Comments on the location information

  • UTM EST NE 1/4

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -120.50962, 38.34908
ListMap

Economic information

Ore body information

  • Strike N 15 W
    Dip 65 NE
    Thickness 2.13M

Comments on the geologic information

  • 2 - 7 FT THICK VEIN IN GRAPHITIC SCHIST & QTZ-MICA SCHIST

Economic information about the deposit and operations

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

Mining district

District name Railroad Flat

Comments on the production information

  • TOTAL OUTPUT IN EXCESS OF $150,000 . IN 1867 ONE 42 - TON LOT OF ORE YIELDED OVER $2500 .

Workings at the site

  • Type of workings Underground
    Area 23.877HA

Comments on the workings information

  • SHAFT W INCLINED DEPTH OF 680 FT., 2ND SHAFT 1200 FT NORTH IS 210 FT DEEP. BOTH CAVED

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B., & LYDON, P.A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF.: CALIF. DIV. MINES & GEOL., COUNTY REPORT 2 , P. 38 , 39 , 66 , 173 , PL B

  • Deposit

    LOGAN, C.A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS CO.: CDM CALIF. JOUR. MINES & GEOL., VOL. 32 , NO. 3 , P. 315

  • Production

    CLARK, 1962

General comments

Subject category Comment text
Deposit VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1979 Hayden, F. (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.