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Diltz

Past Producer in Mariposa county in California, United States with commodities Gold, Silver, Copper, Lead
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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. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10102896
MRDS ID M009729
Record type Site
Current site name Diltz
Alternate or previous names Diltz and Mann, W.Y.O.D.
Related records 10163501

Geographic coordinates

Geographic coordinates: -120.00792, 37.55799 (WGS84)
Elevation 869
Relative position 6 MI. NW OF MARIPOSA

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bear Valley(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 018E 29 California

Comments on the location information

  • E 1/2 NR. CTR. OF SEC. UTM ACC.

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Tertiary
Lead Tertiary

Comments on the commodity information

  • CHIEF ORE MINERAL IS ARSENOPYRITE

Materials information

Materials Type of material
Galena Ore
Gold Ore
Tetrahedrite Ore
Calcite 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 > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -120.00792, 37.55799
ListMap

Economic information

Ore body information

  • Strike N 10 E
    Dip 37.5 E
    Thickness 6.1M

Comments on the geologic information

  • GEOL.DESC: PYROXENE ANDESITE GREENSTONE OF PROBABLE PAL AGE. PRINCIPAL VEIN AVERAGES 2 1/2 FT. IN THICKNESS. NEAR OLD OPEN WORKINGS NE OF MAIN SHAFT, THE VEIN FLATTENS OR ROLLS AND FEATHERS OUT INTO WALL ROCKS IN PLACES BECOMING 15 - 2 FT. THICK. DIFFERENCE IN HANGING WALL AND FOOTWALL GREENSTONE MAY INDICATE CONSIDERABLE THROW ALONG THE FAULT.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1865
Production years 1860 - 1895 , 1924 - 1954

Mining district

District name Whitlock

Ownership information

  • Type Operator
    Owner Diltz Mines (Allen F. Grant, Et Al.)

Production statistics

  • Year 1954
    Period - 1954
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^.24 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Gold Gold 7g/mt
  • Year 1954
    Period - 1954
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^ .03 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Silver Silver 1g/mt

Comments on the production information

  • TOTAL ESTIMATED PRODUCTION BETWEEN $750,000 AND $1,000,000. FROM 1924-1954 THE MINE PRODUCED 81,657 TONS OF ORE YIELDING 21,135 OZ. OF GOLD AND 3395 OZ. OF SILVER; FIGURES DO NOT INCLUDE PERIOD 1860-1895 NOR MANY MASSES OF SPECIMEN GOLD OF CONSIDERABLE VALUE WHICH DID NOT PASS THROUGH THE GOV'T MINT. MINE AND MILL HAVE BEEN LARGELY IDLE SINCE 1952.

Comments on the workings information

  • PRINCIPAL WORKING IS A 625-FT. INCLINED SHAFT SERVING 6 LEVELS AGGREGATING 4700 FT. OF DRIFTS; THERE ARE ALSO SEVERAL SHALLOW INCLINED SHAFTS AND TUNNELS.

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. 91 - 94 , 255 .

  • Deposit

    LAIZURE, C. MCK., 1928 , S. F. FIELD DIV. - MARIPOSA COUNTY: 24TH REPORT STATE MINERALOGIST, VOL. 24 , NO. 2 , P. 85 .

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit Discovery Year: 1860'S
Deposit VEINS
Deposit COMPRISES 2 PATENTED CLAIMS, THE DILTZ AND W.Y.O.D. AND 6 UNPATENTED CLAIMS (3 FULL & 3 FRACTIONAL).

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.

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.