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Dorn

Producer in Mendocino county in California, United States with commodity Manganese
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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. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10031347
MRDS ID M010047
Record type Site
Current site name Dorn
Related records 10237429

Geographic coordinates

Geographic coordinates: -123.19166, 39.47042 (WGS84)
Relative position W. SIDE OF FOSTER MOUNTAIN

Site location context

Political divisions (FIPS codes)

Mendocino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Foster Mountain(quadrangle 1:24,000 scale)

Ukiah(quadrangle 1:100,000 scale)

Ukiah(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Eel(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 019N 012W 28 California

Comments on the location information

  • LOCATED IN S 1/2 SE 1/4 SECTION 28

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore
Pyrolusite Ore
Wad Ore

Nearby scientific data

(1) -123.19166, 39.47042
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: LARGE BLOCKS OF MANGANESE STAINED CHERT. ORE OCCURS AS FRAGMENTS AND SMALL BLOCKS OF SOFT OXIDE ORE SURROUNDED BY LEACHED CHERT. ORE IS IMPURE PSILOMELANE, PYROLUSITE AND WAD.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Ownership information

  • Type Operator
    Owner Fahle, William A. And Roy O.

Comments on the production information

  • SMALL PRODUCTION. IDLE. NO ORE FOUND IN UPPER CUT BUT SOME GOOD ORE HAS BEEN FOUND IN THE LOWER CUTS, OCCURRING AS FRAGMENTS AND SMALL BLOCKS OF SOFT, EARTHY ORE, CONSISTING OF IMPURE PSILOMELANE, PYROLUSITE AND WAD. ABOUT 15 TONS OF ORE HAS BEEN MINED HERE.

Comments on the workings information

  • FEW OPEN CUTS.

Reference information

Bibliographic references

  • Deposit

    CALIFORNIA JOURNAL OF MINES & GEOLOGY, V. 49, NO. 4 OCT., 1953, P. 385

  • Deposit

    D.O.M. BULL. 152, P. 119

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-DEC-1977 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.