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Tyro

Past Producer in Mariposa county in California, United States with commodities Gold, Copper
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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 10030860
MRDS ID M009323
Record type Site
Current site name Tyro
Alternate or previous names Rittershoffen
Related records 10236644

Geographic coordinates

Geographic coordinates: -120.20488, 37.69353 (WGS84)
Elevation 701
Relative position 1.5 MI SW 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)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 003S 016E 09,10 California

Commodities

Commodity Importance
Gold Primary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Covellite Ore
Gold Ore
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.20488, 37.69353
ListMap

Economic information

Ore body information

  • Strike N 20 W
    Dip 60 - 70 NE
    Thickness 2.13M
    Depth to top 0M

Comments on the geologic information

  • CONTINUATION OF SAME VEIN SYSTEM THAT CROSSES MALVIN A GROUP.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1853

Mining district

District name Coulterville

Ownership information

  • Type Owner
    Owner Louise A. Ward, Laurence Eaton

Comments on the production information

  • ORE ON 700 FT LEVEL RAN $20 TO AS HIGH AS $500 AU/TON.

Workings at the site

  • Type of workings Underground
    Length 783.34M
    Overall depth 213.36M

Comments on the workings information

  • SHAFT W/6 LEVELS, DRIFTS, STOPES

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , P. 175 - 176 312

  • Deposit

    LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION, IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 119

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit VEIN, 2 - 7 FT THICK
Deposit PATENTED 20.15 AC ; INFO.SRC : 1 PUB LIT
Deposit Discovery Year: EARLY 1850'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Bowman, J. And 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.