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Our Chance

Past Producer in Mariposa county in California, United States with commodities Gold, Copper, Lead, Manganese, Silver
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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. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10031137
MRDS ID M009732
Record type Site
Current site name Our Chance
Alternate or previous names Clark Mines, Albert Austin Gp
Related records 10260702

Geographic coordinates

Geographic coordinates: -120.00292, 37.54993 (WGS84)
Elevation 610
Relative position SHERLOCK CK, 4 MI NE MT BULLION.

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

  • UTM EST NW1/4 NW1/4

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Lead Secondary
Manganese Critical Secondary
Silver Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -120.00292, 37.54993
ListMap

Economic information

Ore body information

  • Strike NW
    Dip 27 NE
    Thickness 1.22M
    Depth to top 0M

Comments on the geologic information

  • 4 - 6 FT GRANITIC DIKE ABOVE VEIN

Economic information about the deposit and operations

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

Mining district

District name Whitlock

Ownership information

  • Type Operator
    Owner Arthur Clark
    First year 1932
    Last year 1946

Production statistics

  • Year 1946
    Period 1932 - 1946
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^.53 Oz Au/Ton, .087 Oz Ag/Ton Avg. $18.60/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 3g/mt
    Major Ore Gold Gold 15g/mt

Comments on the production information

  • MORE THAN 2000 OZ RECOVERED FROM POCKETS NEAR EXPOSED SURFACE OF VEIN. ONE POCKET YIELDED $17,000

Workings at the site

  • Type of workings Surface/Underground
    Length 1005.84M
    Overall depth 60.96M

Comments on the workings information

  • ADIT W/2500 FT DRIFTS, STOPES, WINZES

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

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit MINE NOTED FOR SPECIMENS OF CRYSTALLIZED & ARBORESCENT GOLD. ; INFO.SRC : 1 PUB LIT
Deposit VEIN, AVG 14 IN, VARYING FROM 4 INCHES - 4 FT

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.