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  3. Mineral Resource Data System (MRDS)

Golden Key Group

Past Producer in Mariposa county in California, United States with commodity Gold
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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. Ownership information
  13. Production statistics
  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 10102898
MRDS ID M009738
Record type Site
Current site name Golden Key Group
Alternate or previous names Austin Group

Geographic coordinates

Geographic coordinates: -120.0132, 37.55021 (WGS84)
Elevation 788
Relative position 3 1/2 MI. NE OF MOUNT 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 29,32 California

Comments on the location information

  • SW 1/4 29 NW 1/4 32

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • SPECIMEN ORE FROM CUTTER. GOOD SIZED ORE SHOOTS DEVELOPED IN THE MAIN VEINS.

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -120.0132, 37.55021
ListMap

Economic information

Ore body information

  • Strike N
    Dip 40 - 65 E
    Thickness 0.1M

Comments on the geologic information

  • GEOL.DESC: 4 CUTTER VEINS AT RIGHT ANGLES INTERSECT TWO PARALLEL MAIN VEINS - LOCAL NAMES REGAN AND HAYSEED. META-ANDESITE GREENSTONE WALL ROCKS. QTZ. VEIN VARIES FROM 4 - 6 IN THICK.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1912 - 1913 , 1933 - 1949

Ownership information

  • Type Operator
    Owner Golden Key Mining Co.
    Home office C/O J. E. Macdonald

Production statistics

  • Year 1913
    Period - 1913
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^ .05 Oz/Ton Ag.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Silver Silver 1g/mt
  • Year 1913
    Period - 1913
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^1.8 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 51g/mt

Comments on the production information

  • GOLDEN K GROUP EST TOTAL YIELD $154,000 BY 1949 . UNDER MANY DIFFERENT PRODUCTION NAMES.

Workings at the site

  • Type of workings Underground
    Overall depth 91.44M

Comments on the workings information

  • GREENSTONE TUNNEL 700 FT LONG WITH DRIFTS AND STOPES. HAYSEED SHAFT HAS LEVELS AT VERT DEPTHS OF 110 , 220 , 250 & 300 FT W. 650 + FT DRIFTS.

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. 266 .

  • Deposit

    LAIZURE, C. MCK., 1935 , CURRENT MINING ACTIVITIES IN THE SAN FRANCISCO DISTRICT WITH SPEC. REF. TO GOLD: CALIF. JOUR. MINES & GEOL., VOL. 31 , NO. 1 , P. 33 .

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit SIX PATENTED CLAIMS, THE CORONADO NO. 2, DUSENBERRY, GOLDEN GATE, HAYSEED, HAYWIRE FRACTION AND REGAN, AND 3 MILL SITES. MUCH SPECIMEN ORE HAS BEEN TAKEN FROM THE CUTTER VEINS BUT SEVERAL GOOD SIZED ORE SHOOTS HAVE BEEN DEVELOPED IN THE MAIN VEINS.
Deposit VEIN, ORE SHOOTS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-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.

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.