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Black Oak

Past Producer in Mariposa county in California, United States with commodities Gold, Silver, 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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Land status
  11. Ownership information
  12. Production statistics
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10031293
MRDS ID M009965
Record type Site
Current site name Black Oak
Related records 10261457

Geographic coordinates

Geographic coordinates: -119.80848, 37.51215 (WGS84)
Relative position 3 MI. E OF DARRAH

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Buckingham Mountain(quadrangle 1:24,000 scale)

Yosemite Valley(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

Sierra National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005S 020E 08 California

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Secondary

Materials information

Materials Type of material
Copper Ore
Gold Ore
Silver Ore
Quartz Gangue

Nearby scientific data

(1) -119.80848, 37.51215
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1933 - 1936

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner M. Kane Golden Opportunity Inc.
    First year 1927

Production statistics

  • Year 1936
    Period - 1936
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^100 Lb/Ton Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Copper Copper 45180g/mt
  • Year 1936
    Period - 1936
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^.36 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 10g/mt
  • Year 1936
    Period - 1936
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^.9 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 25g/mt

Comments on the production information

  • LAST PERIOD OF ACTIVITY WAS 1933-36 DURING WHICH TIME 153 TONS OF ORE WAS MILLED WHICH YIELDED 144.33 OZ. OF GOLD, 37 OZ. OF SILVER AND 1507 LBS. OF COPPER.

Comments on the workings information

  • NO DATA ON WORKINGS.

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. 242 .

  • Deposit

    LAIZURE, C. MCK., 1928 , S. F. FIELD DIV. - MARIPOSA COUNTY: 24TH REPORT STATE MINERALOGIST, VOL. 24 , NO. 2 , P. 130 .

  • Deposit

    D.O.M. BULL. 144, PT. 3, 1948, P. 265

  • Production

    BOWEN & GRAY, 1953 .

General comments

Subject category Comment text
Deposit VEIN
Deposit UNPATENTED CLAIM (1927)

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.

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.