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  3. Mineral Resource Data System (MRDS)

Armstrong and Roberts

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. Links to other databases
  10. Bibliographic references
  11. Reporter information

Geologic information

Identification information

Deposit ID 10092246
MRDS ID M008543
Record type Site
Current site name Armstrong and Roberts
Related records 10115468

Geographic coordinates

Geographic coordinates: -120.56407, 38.60379 (WGS84)
Relative position 3 MI. S. OF GRIZZLY FLAT. LOCATED AT HENRY DIGGINGS.

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Omo Ranch(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)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 009N 013E 29 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -120.56407, 38.60379
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on the production information

  • ACTIVE 1894

Comments on the workings information

  • DRIFT MINE - 600-FT. ADIT.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, P. 541

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.