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Crown Lead

Past Producer in Mariposa 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. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10030881
MRDS ID M009351
Record type Site
Current site name Crown Lead
Related records 10163538

Geographic coordinates

Geographic coordinates: -120.16766, 37.63825 (WGS84)
Elevation 610
Relative position 5 MI. S OF COULTERVILLE

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Coulterville(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Merced(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(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 Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 003S 016E 26,35,36 California

Comments on the location information

  • SE 1/4 26 ; NE CORNER 35 ; NW 1/4 36 . UTM EST.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Ankerite Gangue
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.16766, 37.63825
ListMap

Economic information

Ore body information

  • General form PINCH & SWELL
    Strike N 45 W
    Dip STEEPLY NE
    Thickness 3.05M

Comments on the geologic information

  • GEOL.DESC: QUARTZ VEIN 3 TO 10 FT. THICK ON CONTACT BETWEEN A SERPENTINE INTRUSION AND SLATE OF THE UPPER JUR MARIPOSA FM.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1864

Mining district

District name Coulterville

Ownership information

  • Type Operator
    Owner Joseph And Emilie Kopf

Comments on the production information

  • OPERATED AT VARIOUS TIMES IN CONJUNTION WITH THE CROWN PEAK AND RED BANK OR STEVENSON GROUP OF CLAIMS. HAS A LONG RECORD OF INTERMITTENT ACTIVITY BUT ONLY A SMALL RECORD OF PRODUCTION. IDLE.

Workings at the site

  • Type of workings Underground
    Area 18.098HA
    Overall length 1676.4M

Comments on the workings information

  • 50 FT. INCLINED SHAFT AND A TUNNEL OF UNKNOWN LENGTH NOW CAVED.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., & GRAY, H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIF.: CALIF. JOUR. MINES & GEOL., VOL. 53 , NOS. 1 & 2 , P. 253

  • Deposit

    LOGAN, C. A., 1934 , MOTHER LODE GOLD BELT OF CALIF.: CDM BULL. 108 , PL. 10 (LOC.).

General comments

Subject category Comment text
Deposit QUARTZ VEIN
Deposit PATENTED PROPERTY. CLAIM EXTENDS FOR MORE THAN 5500 FT. ALONG A BRANCH OF THE MOTHER LODE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-DEC-1978 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.