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  3. Mineral Resource Data System (MRDS)

Valpariso

Past Producer in Amador 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. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10028188
MRDS ID M005039
Record type Site
Current site name Valpariso
Alternate or previous names Black Metal
Related records 10260310

Geographic coordinates

Geographic coordinates: -120.75407, 38.31047 (WGS84)
Elevation 299
Relative position ABOUT 4 1/2 MILE S OF JACKSON

Site location context

Political divisions (FIPS codes)

Amador(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Jackson(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 005N 011E 03,10 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.75407, 38.31047
ListMap

Economic information

Controls for ore emplacement

  • Faulted Zone Along Contact.

Comments on the geologic information

  • GEOL.DESC: GOLD OCCURS IN POCKETS, QUARTZ VEINS AND STRINGERS BOTH IN GREENSTONE AND SLATE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years PRIOR TO 1888 UNTIL 1931 ; 1937 ; INTERMITTANTLY FROM 1937 TO 1939 .

Mining district

District name "Black Metal Belt"/East Belt

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Valparaiso Mining Co

Comments on the production information

  • WORKED PRIOR TO 1888 AND UNTIL 1898. FROM 1898-1931 PRODUCED $100,000 IN GOLD. PRODUCED $600 IN 1937. FROM 1937-1939 APPROX. $5000 IN GOLD PRODUCED FROM SMALL POCKETS. IDLE SINCE 1939. HOLDINGS OF 36 ACRES

Workings at the site

  • Type of workings Underground
    Area 14.569HA
    Length 396.24M

Comments on the workings information

  • ADIT 1300 FT., WINZE 130 FT. ALMOST 700 FT. FROM PORTAL.

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. 194

  • Deposit

    LOGAN, C.A., 1934 , MOTHER LODE GOLD BELT OF CAL.: CDM BULL. 108 , P. 123

  • Deposit

    TUCKER, W.B., 1914 , AMADOR COUNTY: CMB REPT. 14 , P. 52

  • Production

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

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.

External references

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.