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La Victoria

Past Producer in Mariposa county in California, United States with commodities Copper, Zinc
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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. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10030899
MRDS ID M009381
Record type Site
Current site name La Victoria
Alternate or previous names Victoire, La Victoire, Tandem
Related records 10163260

Geographic coordinates

Geographic coordinates: -120.20071, 37.6052 (WGS84)
Relative position 11 MILES NORTH OF HORNITOS

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hornitos(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 004S 016E 04,09,10 California

Commodities

Commodity Importance
Copper Primary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Malachite Ore
Hematite Gangue
Limonite Gangue
Quartz Gangue

Analytical data

Result AVG. CU FROM UPPER WORKINGS 5.3 %, FROM LOWER WORKINGS 4.1 %.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
    Rock unit name Amador Group
    Rock description Amador Group

Economic information

Geologic structures

Type of structure Local
Structure description Folds, Faults, Shear Zones: Faults And Shear Zones Two Major Systems; ( 1 ) Faults Which Strike N 60 - 80 W, Dip Northward, Few Dip Southward, ( 2 ) Faults Which Strike North To 50 W, Dip 10 - 50 Ne. Most Prominent Shear Zone From 1st System Is Poupion Shear Zone. Most Prominent In 2nd System Is La Victoria Shear Zone.

Ore body information

  • General form PODS
    Strike N 50 W
    Dip 10 - 45 NE
    Length 4.57M
    Width 0.98M

Controls for ore emplacement

  • Gently Dipping Shear Zones In Hanging Wall Of Steeper Poupion Shear Zone.

Comments on the geologic information

  • GEOL.DESC: AREA UNDERLAIN BY SLIGHTLY METAMORPHOSED VOLCANIC ROCKS AND CHERT. AREA IS NEAR CREST OF LARGE ANTICLINE, TRENDS NW, PLUNGES GENTLY SE. OVERTURNED WEST LIMB OF ANTICLINE IS CUT OFF BY PINEY THRUST.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1864
Year of first production 1864
Year of last production 1917
Production years 1864-1873, 1890S, 1917

Mining district

District name Hunter Valley

Ownership information

  • Type Operator
    Owner Ralph E. And Libbie N. Dailey

Comments on the production information

  • 1864 - 1865 OVER 2,000 TONS OF SORTED ORE AND 2,000 TONS OF ORE TREATED AT THE MINE. NO PRODUCTION REPORTED.

Comments on the reserve resource information

  • ENRICHED 5 % ORE OF MINE IS NEARLY EXHAUSTED. SMALL AMOUNT REMAINS IN PILLARS ABOVE BOTTOM LEVEL. AVG. GRADE OF PRIMARY ORE ON BOTTOM LEVEL IS 4 % CU, 2 % ZN, AND LESS 0.1 OZ AU/TON. OTHER ZONE BELIEVED TO CARRY COPPER ORE IS JUST EAST OF CAVAGNARO SHAFT.

Comments on the workings information

  • DEPOSIT IS DEVELOPED FOR 250 FT. ALONG DIP BY WORKINGS ON 4 LEVELS: ADIT LEVEL ELEV. 1958 FT., INTERMEDIATE LEVEL ELEV. 1931 FT., MAIN LEVEL 1900 FT., AND BOTTOM LEVEL 1858 FT. NUMEROUS PITS, SHALLOW SHAFTS, AND 785 FT. OF DRIFTS, CROSSCUTS AND INCLINES.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E. AND CLIFFTON, G. H., 1957 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY, CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 1 & 2 , P. 66 - 67 .

  • Deposit

    COX, M. W. AND WYANT, D. G., 1948 , LA VICTORIA COPPER MINE, MARIPOSA COUNTY, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 127 - 132 .

General comments

Subject category Comment text
Deposit Discovery Year: APRIL 1864
Deposit ORE ZONE IS EXPOSED 125 FT. ALONG MAIN LEVEL. COPPER - BEARING PART OF SHOOT IS RESTRICTED TO PART OF SHEAR ZONE WHICH STRIKES N 15 W.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JUL-1978 Fraticelli, L. A. (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.