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  3. Mineral Resource Data System (MRDS)

Valley Springs Area

Occurrence in Calaveras 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. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10033762
MRDS ID M020407
Record type Site
Current site name Valley Springs Area
Related records 10138416

Geographic coordinates

Geographic coordinates: -120.79184, 38.21435 (WGS84)
Relative position 2 MI. TO VALLEY SPRINGS BY PAVED ROAD

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Valley Springs(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004N 011E 08 California

Comments on the location information

  • LOCATED IN W 1/2 SECTION 8

Commodities

Commodity Importance
Nickel Critical Tertiary

Materials information

Materials Type of material
Chrysoprase Ore
Garnierite Ore

Analytical data

Result SAMPLES ASSAYED BETWEEN 0.14 AND 9.42 PERCENT NICKEL OXIDE WITH AVEAGE OF 1.0 PERCENT.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -120.79184, 38.21435
ListMap

Economic information

Ore body information

  • Thickness 30.48M

Comments on the geologic information

  • GEOL.DESC: NICKEL-BEARING LATERITIC MANTLE IS FOUND ON TOPS OF SERPENTINE HILLS, WHICH FOLLOWS CONTOURS OF PRESENT TOPOGRAPHY. MANTLE CAN BE DIVIDED INTO 2 ZONES WHICH GRADE INTO ONE ANOTHER: (1) SILICIFIED ZONE, AND (2) THE MAGNESITE ZONE. GARNIERITE AND CHRYSOPRASE ARE MAIN NICKEL MINERALS FOUND AT BASE OF LATERITIC MANTLE AS VEINS IN FRACTURED SERPENTINE OR CONTAINED WITHIN BOXWORK OF SILICIFIED ZONE SERPENTINE SEEMS TO HAVE BEEN DERIVED FROM PERIDOTITE AND PYROXENITE. BASE OF MANTLE HAS AVERAGE ELEVATION OF 1050 FT. RANGE OF THICKNESS IS 20 TO 100 FT., AVERAGING 50 FT.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1954

Ownership information

  • Type Owner
    Owner Open Land

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B. AND P.A. LYDON, 1962 , CALIF. DIV. OF MINES AND GEOL., COUNTY REPT. 2

  • Deposit

    CLEVELAND, G., 1954 ( 1974 ), PRIVATE COMMUNICATION

  • Deposit

    CHESTERMAN, C. W., 1976 , WRITTEN COMMUNICATION

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.

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.