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  3. Mineral Resource Data System (MRDS)

Union Springfield

Occurrence in El Dorado 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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Ownership information
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10092081
MRDS ID M007696
Record type Site
Current site name Union Springfield

Geographic coordinates

Geographic coordinates: -120.8238, 38.64684 (WGS84)
Relative position CTR. W1/2 OF SEC.

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Placerville(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Cosumnes(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

USBR(Federal land areas administered by USBR)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 009N 010E 12 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -120.8238, 38.64684
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner El Dorado Mining Co.

Comments on the production information

  • RICH SURFACE OUTCROPS WORKED IN EARLY 1850'S AND SOON AFTER A SHAFT WAS SUNK. WORKED WITH CHURCH MINE PRIOR TO 1868 AND COMBINED PRODUCTION EXCEEDED $600,000. UNION WORKED 1871-1886; 1896-1909; 1914-15. REOPENED IN 1934 AND WORKED 1936-37; OPERATIONS SPORADIC AND INCONSEQUENTIAL 1937-1940. IDLE SINCE. THIS MINE CONSIDERED TO HAVE BEEN LARGEST SOURCE OF LODE GOLD IN THIS COUNTY. HOWEVER, AS FEW PRODUCTION FIGURES HAVE BEEN MADE AVAILABLE, TOTAL OUTPUT IS UNKNOWN BUT ESTIMATED VALUE RANGES FROM $2,700,000 TO $5,000,000. AREA COMPRISES 41.32 ACRES.

Comments on the workings information

  • A 2000-FT. VERTICAL MAIN SHAFT; ABOUT 750 FT. NORTH ANOTHER 900-FT. SHAFT AND 200 FT. BEYOND ANOTHER 500-FT. SHAFT. SEVERAL CROSSCUT ADITS.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, PP. 427-28, 536, PL. 10; V. 34, NO. 3, PL. II

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. 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.