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Contini

Past Producer in Amador county in California, United States with commodities Gold, Lead, 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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10028313
MRDS ID M005214
Record type Site
Current site name Contini
Alternate or previous names Mikado
Related records 10260043

Geographic coordinates

Geographic coordinates: -120.66518, 38.38797 (WGS84)
Relative position 1.8 MILES S.W. OF PINE GROVE

Site location context

Political divisions (FIPS codes)

Amador(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pine Grove(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)

Geographic areas

Country State County
United States California Amador

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 006N 012E 09 California

Comments on the location information

  • W 1/2 SECTION

Commodities

Commodity Importance
Gold Primary
Lead Tertiary
Copper Tertiary

Comments on the commodity information

  • COARSE GOLD OCCURS IN QUARTZ VEIN WITH PYRITE, SMALL AMOUNTS OF CHALCOPYRITE AND GALENA.

Materials information

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

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -120.66518, 38.38797
ListMap

Economic information

Ore body information

  • General form TABULAR, PINCH AND SWELL
    Strike NE
    Dip 60 - 70 SE
    Thickness 3.66M

Comments on the geologic information

  • GEOL.DESC: QUARTZ VEIN VARIES FROM 6 TO 12 FT. IN THICKNESS; COUNTRY ROCK CONSISTS OF BLOCKY GREENSTONE, CUT BY GRANITIC DIKES

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1935 - 1939 , 1950 , 1951 - 52

Ownership information

  • Type Operator
    Owner Bert Contini

Comments on the production information

  • WORKED IN 1889-1890 IN CONJUNCTION WITH THE WHEELING MINE 1 MILE EAST; RELOCATED BY CONTINI IN 1932 AND WORKED 1935-1939 AND AGAIN IN 1950. PRODUCED ABOUT $16,000 IN GOLD 1935-39, SMALL AMOUNTS IN 1950 AND DURING WINTER OF 1951-52 ABOUT 20 TONS OF ORE SHIPPED. TWO UNPATENTED MINING CLAIMS, THE IXL AND THE THREE HORSEMEN. THE MAIN ADIT IS ON THE IXL CLAIM. THE VEIN IS 6-12 FEET WIDE IN BLOCKY GREENSTONE CUT BY GRANITIC DIKES. THERE IS NO EQUIPMENT ON THE PROPERTY.

Comments on the workings information

  • 2 CLAIMS; ADIT 250 FT., INCLINE SHAFT 60 TO 70 DEGREES WITH NOW-CAVED WINZE, CROSSCUTS ABOUT 200 FT.

Reference information

Bibliographic references

  • Deposit

    CARLSON, D.W. AND CLARK, W.B., MINES AND MIN. RES. OF AMADOR COUNTY, CAL.: CJMG VOL. 50 , P. 177

  • Production

    CARLSON, D.W. AND CLARK, W.B., 1954

General comments

Subject category Comment text
Deposit MINOR QUANTITIES OF GOLD AND SILVER RECOVERED FROM GOLD ORE AMALGAMATED FROM THIS MINE IN 1955 - U.S. BUR. MINES MIN. YEARBOOK 1955, V. 3, P. 207

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.