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Oro Y Plata

Past Producer in Calaveras county in California, United States with commodities Gold, Silver, Copper, Lead, Tin, Zinc, Mercury
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  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 10040656
MRDS ID M055510
Record type Site
Current site name Oro Y Plata
Alternate or previous names Blue Wing, Red Wing Willard, Silver Star, Oro-Plata Ext., Pay Rock

Geographic coordinates

Geographic coordinates: -120.46906, 38.14574 (WGS84)
Relative position 1 MI NW OF MURPHYS

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Murphys(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Stanislaus(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 003N 014E 05,06 California

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Secondary
Lead Secondary
Tin Critical Tertiary
Zinc Critical Tertiary
Mercury Tertiary

Comments on the commodity information

  • MOSTLY LOW GRADE AU ORE ORE ON N SIDE OF HILL, PAY ROCK & ORO PLATA VEINS, CONSISTS MAINLY OF GALENA, W AG - AU RATIO OF 6 : 1 ; WHILE ORE FROM S SIDE OF HILL, BLUE WING, HAS TETRAHEDRITE W NO GALENA & AG - AU RATIO OF 1 : 1 . OCCASIONAL BUNCHS OF STIBNITE OBSERVED. W SMALL VALUES OF AU & AG.

Materials information

Materials Type of material
Cinnabar Ore
Gold Ore
Stibnite Ore
Dolomite Gangue
Quartz Gangue

Alteration

  • (Local) Mineralization Of Network Of Igneus Rx.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -120.46906, 38.14574
ListMap

Economic information

Ore body information

  • Name RED WING
    Strike N85W}N85W}N 75 E}N 75 E}N 85 W}N 85 W}N 78 W
    Dip N}90}75 SE}75 SE}NE}54 NE}SW
    Thickness 3.05M
    Width 30.48M
  • Name ORO PLATA
    Strike N85W}N85W}N 75 E}N 75 E}N 85 W}N 85 W}N 78 W
    Dip N}90}75 SE}75 SE}NE}54 NE}SW
    Thickness 0.76M
    Width 22.86M
  • Name BLUE WING EAST ORE SHOOT
    Strike N85W}N85W}N 75 E}N 75 E}N 85 W}N 85 W}N 78 W
    Dip N}90}75 SE}75 SE}NE}54 NE}SW
    Thickness 0.61M
    Width 48.77M
  • Name BLUE WING WEST ORE SHOOT
    Strike N85W}N85W}N 75 E}N 75 E}N 85 W}N 85 W}N 78 W
    Dip N}90}75 SE}75 SE}NE}54 NE}SW
  • Name BLUE WING NORTH BRANCH VEIN
    Strike N85W}N85W}N 75 E}N 75 E}N 85 W}N 85 W}N 78 W
    Dip N}90}75 SE}75 SE}NE}54 NE}SW
  • Name WHITE WING
    Strike N85W}N85W}N 75 E}N 75 E}N 85 W}N 85 W}N 78 W
    Dip N}90}75 SE}75 SE}NE}54 NE}SW
  • Name PAY ROCK VEIN
    Strike N85W}N85W}N 75 E}N 75 E}N 85 W}N 85 W}N 78 W
    Dip N}90}75 SE}75 SE}NE}54 NE}SW

Comments on the geologic information

  • LENSES OF RECRYSTALLIZED LS AND DOLOMITE.

Economic information about the deposit and operations

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

Ownership information

  • Type Owner
    Owner Mary Bess Norton
    First year 1962

Comments on the production information

  • AT 1888 CLOSING, ORE WAS MOSTLY LOW GRADE. ORE VARIES FROM .25 - 1.10 OZ/TON AU.

Workings at the site

  • Type of workings Surface/Underground
    Area 61.919HA
    Overall depth 96.62M

Comments on the workings information

  • OPEN CUTS, ADITS, GLORY HOLE, & NUMBER OF SHAFTS INCLUDING 286 & 317 FT SHAFTS, DRIFTS.

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. 172 , 65

  • Deposit

    LOGAN, C. A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS CO.: CDM CALIF. JOUR. MINES & GEOL., VOL. 32 , NO. 3 , P. 278 , 279 , 315

  • Deposit

    GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIF.: CALIF. DIV. MINES. VOL. 53 , NOS. 3 & 4 , P 434

  • Production

    LOGAN, 1936 ; CLARK, 1962

General comments

Subject category Comment text
Deposit VEINS. PRINCIPAL VEINS ARE RED WING, ORO PLATA, BLUE WING AND WHITE WING ON THE CONTACT BETWEEN SEVERAL NW TRENDING DIORITE BODIES IN LS. RED WING VEIN STRIKES N 85 W, DIPS N & MAY BE MINERALIZED DIKE, 100 FT THICK W LENSES OF QZ & IGN RX INTERSPERSED W GOUGE. THE ORO PLATA VEIN, N OF RED WING, BETWEEN DIKE ROCK AND LS, STRIKE N 85 W, VERT DIP. BLUE WING VEIN TO S, BRANCHS FROM RED WING, W LS WALLS, STRIKES N 75 E & DIPS 75 SE, AND HAS TWO ORE SHOOTS - E IS 8 - 10 FT THICK, WIDTH 75 FT; W IS 2.5 FT THICK, 160 FT WIDE. NORTH BRANCH OF BLUE WING STRIKES N 85 W W VERT OR SLIGHT NE DIP & PARALLELS RED WING. TWO PARALLEL PAY ROCK VEINS OCCUR IN LS N. OF RED WING, STRIKING N 78 W, DIPPING SW, 2 FT THICK. WHITE WING, SOUTH OF BLUE WING, STRIKES N 85 W, DIPS 54 NE.
Deposit IN 1962 ADIT FOR TOURIST ATTRACTION WAS BEING DEVELOPED - CLARK, 1962 ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Editor 14-MAR-1994 Mosier, D.L. U.S. Geological Survey CORRECTED LAT.-LONG, DEPOSIT TYPE, ADDED HOST ROCK TYPE.
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.

External references

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.