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  3. Mineral Resource Data System (MRDS)

Twenty Grand Mine

Past Producer in Mono county in California, United States with commodities Copper, Gold, Lead, Silver
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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. Land status
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10140431
MAS/MILS ID 0060510076
Record type Site
Current site name Twenty Grand Mine
Alternate or previous names White Mountains Rare Ii Area

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -118.33314, 37.48574 (WGS84)
Elevation 2145
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Mono(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Laws(quadrangle 1:24,000 scale)

Bishop(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Crowley Lake(hydrologic unit)

Mono-Owens Lakes(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Federal lands

LG(Federal land areas administered by LG)

Geographic areas

Country State County
United States California Mono

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005 S 034 E 19 SWSW California

Commodities

Commodity Importance
Copper Tertiary
Gold Primary
Lead Tertiary
Silver Tertiary

Nearby scientific data

Ore Body (1) -118.33314, 37.48574
ListMap

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Land status

Ownership category National Forest

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 36, 1940, P. 139-140.

  • Deposit

    U.S. BUREAU OF MINES OPEN-FILE REPORT MLA 94-83, 1983, TABLE 4,

  • Deposit

    NO. 96, P. 49.

Reporter information

Type Date Name Affiliation Comment
Reporter 31-MAR-1991 Schmauch, Steven W. U.S. Bureau of Mines

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.