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Ventura Mine

Occurrence in Ventura county in California, United States with commodities Nickel, Copper
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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. 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 10033786
MRDS ID M020431
Record type Site
Current site name Ventura Mine
Related records 10255989

Geographic coordinates

Geographic coordinates: -118.7923, 34.19751 (WGS84)
Elevation 445
Relative position IN DENSELY BRUSH COVERED ROLLING HILLS LOW ON S.W. SLOPE OF SIMI PEAK OF THE SIMI HILLS. 8 MI. TO THOUSAND OAKS BY PAVED AND UNIMPROVED DIRT ROADS.

Site location context

Political divisions (FIPS codes)

Ventura(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Thousand Oaks(quadrangle 1:24,000 scale)

Los Angeles(quadrangle 1:100,000 scale)

Los Angeles(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Calleguas(hydrologic unit)

Ventura-San Gabriel Coastal(hydrologic accounting unit)

Southern California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Ventura

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 001N 018W 05 California

Comments on the location information

  • LOCATED IN SW 1/4 SECTION 5

Commodities

Commodity Importance
Nickel Critical Tertiary
Copper Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Cuprite Ore
Malachite Ore
Millerite Ore
Pentlandite Ore
Pyrrhotite Ore

Analytical data

Result SAMPLES RANGE BETWEEN 0.13 AND 1.75 PERCENT NICKEL. DMEA SAMPLES FROM 1940'S RANGED 0.13 TO 0.34 PERCENT NICKEL.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -118.7923, 34.19751
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: NICKEL AND COPPER BEARING MINERALS OCCUR IN SHEAR ZONE BETWEEN CRETACEOUS SANDSTONE AND INTRUSIVE TERTIARY BASALT LOW ON S.W. SLOPE OF SIMI PEAK. BASALT OCCURS AS SILL WHOSE EXPANDED LENGTH IS ABOUT 600 FT., ESTIMATED 300 FT. THICK. SILL HAS WESTERLY TREND AND DIPS 20 N., INTO HILLSIDE. MINERALIZATION ZONE SURROUNDS SILL, AND IS AS MUCH AS 500 FT. WIDE, TRACED ALONG STRIKE 800 FT. NICKEL-BEARING MINERALS ARE MILLERITE, PENTLANDITE, PYRRHOTITE, AND ASSOCIATED COPPER MINERALS ARE CHALCOPYRITE, MALACHITE, AZURITE, AND CUPRITE. ORE BODY IS ABOUT 800 FT. LONG, AVERAGES 300 FT. WIDE, AND 300 FT. THICK

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1932

Ownership information

  • Type Owner
    Owner Fee Land, Said To Be Owned By Prudential Life Insurance Co.

Reference information

Bibliographic references

  • Deposit

    TROXEL, B.W., 1975 ( 1963 ), PRIVATE COMMUNICATION.

  • Deposit

    TUCKER, W.B. AND SAMPSON, R.J., 1932 , VENTURA COUNTY IN MINING IN CALIF: CALIF. D.O.M. REPT. 28 , PP. 247 - 277

  • Deposit

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

General comments

Subject category Comment text
Deposit Discovery Year: PRESENCE OF NICKEL AND COPPER KNOWN PRIOR TO EARLY 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.

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.