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  3. Mineral Resource Data System (MRDS)

Georgetown Area

Occurrence in El Dorado county in California, United States with commodity Nickel
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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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10033776
MRDS ID M020421
Record type Site
Current site name Georgetown Area

Geographic coordinates

Geographic coordinates: -120.74908, 38.88212 (WGS84)
Relative position GEORGETOWN IS ABOUT 1.5 MI. FROM N. PART OF AREA, AREA ACCESSIBLE VIA NUMEROUS PAVED AND GRADED DIRT ROADS.

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tunnel Hill(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Eldorado National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 012N 011E 01,12,13,24,30,31 California

Comments on the location information

  • UTM APPROX. LOC.

Commodities

Commodity Importance
Nickel Critical Tertiary

Analytical data

Result ASSAYS 0.02 PERCENT NICKEL

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Pyroxenite
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -120.74908, 38.88212
ListMap

Economic information

Ore body information

  • Thickness 3.05M

Comments on the geologic information

  • GEOL.DESC: SERPENTINITE AND PARTIALLY SERPENTINIZED PYROXENITE FORM NARROW N. TRENDING 8 MI. LONG BELT SITUATED 1 MT. E. OF GEORGETOWN. RED LATERITIC SOIL OCCURS IN PATCHES ON THE SERPENTINITE, AVERAGES A FEW FT. IN DEPTH, UP TO 10 FT. DEEP IN SECTION 12 . LATERITE AGGREGATE AREA IS PERHAPS MORE THAN 150 ACRES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1849

Ownership information

  • Type Owner
    Owner Fee Land And Open Ground

Reference information

Bibliographic references

  • Deposit

    BRIGHT, J.H., 1974 ( 1958 ), PRIVATE COMMUNICATION.

  • Deposit

    CATER, FRED W. JR., RYNEARSON, G.A. AND DOW, DONALD H., 1951 , CHROMITE DEPOSITS OF EL DORADO COUNTY, CALIF: CALIF. D.O.M. BULL. 134 , PT. 111 , CH. 4 , P. 107 - 167

  • Deposit

    CLARK, WILLIAM B., 1970 , GOLD DISTRICTS OF CALIF: CALIF. D.O.M. BULL. 193 , P. 51

  • Deposit

    CHESTERMAN, C.W., 1976 , WRITTEN COMMUNICATION.

General comments

Subject category Comment text
Deposit Discovery Year: NICKEL-BEARING LATERITE NOTED IN 1950'S, GOLD WAS FIRST MINED IN GEORGETOWN AREA IN 1849 , AND MINING CONTINUED INTO 1930'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1978 Killman, K.; 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.