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C. W. Johnson Prospect

Occurrence in Mendocino county in California, United States with commodity Chromium
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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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10031332
MRDS ID M010022
Record type Site
Current site name C. W. Johnson Prospect
Related records 10237129

Geographic coordinates

Geographic coordinates: -123.16803, 38.97126 (WGS84)
Relative position 3 MI. W, THEN 1 MI. S OF HOPLAND

Site location context

Political divisions (FIPS codes)

Mendocino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Yorkville(quadrangle 1:24,000 scale)

Point Arena(quadrangle 1:100,000 scale)

Santa Rosa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Russian(hydrologic unit)

Northern California Coastal(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mendocino

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 013N 012W 22 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -123.16803, 38.97126
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: CHROMITE GRAINS IN LAYERS IN SHEARED SERPENTINE PODS. INFERRED RESERVES ARE A FEW HUNDRED TONS, 15% CR2O3 - SMALL, LOW GRADE E-TRENDING SHEAR ZONE - LANDSLIDES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    DMEA REPT. 4525 BY J. D. WARNE (USBM) AND D. B. TETLOCK (USGS), DEC. 1956

General comments

Subject category Comment text
Deposit PATENTED - ABOUT 480 ACRES. TWO BULLDOZED TRENCHES 10' DEEP IN 1954.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 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.