1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Jumbo

Past Producer in Amador county in California, United States with commodities Gold, Copper
Map
XML
JSON
KML
C
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. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10028346
MRDS ID M005263
Record type Site
Current site name Jumbo
Related records 10138328

Geographic coordinates

Geographic coordinates: -120.51768, 38.43408 (WGS84)
Relative position ABOUT 2 MILES S.E. OF BUCKHORN LODGE

Site location context

Political divisions (FIPS codes)

Amador(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

West Point(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Mokelumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Amador

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 007N 013E 26 California

Comments on the location information

  • SW 1/4 OF SEC 26

Commodities

Commodity Importance
Gold Primary
Copper Tertiary

Comments on the commodity information

  • GOLD OCCURS WITH QUARTZ, SOME PYRITE, AND LESS CHALCOPYRITE AND MALACHITE.

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Malachite Ore
Pyrite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -120.51768, 38.43408
ListMap

Economic information

Ore body information

  • Strike N
    Dip 90
    Thickness 1.83M
    Length 914.4M
    Depth to top 0M

Comments on the geologic information

  • GEOL.DESC: QUARTZ STRINGERS 1 TO 3 IN AND QUARTZ POCKETS IN 6 FT WIDE MINERALIZED ZONE; THE VEIN OUTCROPS FOR 3000 FT., IS VERTICAL BUT DIPS WEST AT THE NORTH END OF THE EXPOSURE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1950

Ownership information

  • Type Operator
    Owner Behrend Deecher, George Viscovich, Steve Miloservich

Comments on the production information

  • NO PRODUCTION RECORDED, BUT GOLD ASSAY VALUES WERE $ 12 / TON ON PARTS OF VEIN IN SECOND ADIT, $ 12 / TON IN OPEN CUT, AND $ 121 / TON IN MAIN ZONE IN LOWER LEVEL. HANGING WALL SAMPLES IN GRANITE VARIED BETWEEN $ 14 AND $ 28 / TON.

Workings at the site

  • Type of workings Underground
    Length 25.91M

Comments on the workings information

  • 4 CLAIMS; 2 ADITS 20 , 65 FT., OPEN-CUT 20 FT.

Reference information

Bibliographic references

  • Deposit

    CARLSON, D.W. AND CLARK, W.B., 1954 , MINES AND MIN. RES. OF AMADOR COUNTY, CAL: CJMG VOL. 50 , P. 182

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. U.S. Geological Survey
Updater 01-APR-1978 Tatkin, T.; 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.