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F. J. Long

Prospect 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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Ownership information
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10031367
MRDS ID M010083
Record type Site
Current site name F. J. Long
Related records 10116018

Geographic coordinates

Geographic coordinates: -123.37583, 39.96124 (WGS84)

Site location context

Political divisions (FIPS codes)

Mendocino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Updegraff Ridge(quadrangle 1:24,000 scale)

Covelo(quadrangle 1:100,000 scale)

Ukiah(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower 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 024N 014W 01 California

Commodities

Commodity Importance
Manganese Critical Primary

Analytical data

Result ORE GRADE 35 TO 40 PERCENT MANGANESE

Nearby scientific data

(1) -123.37583, 39.96124
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: BLACK MANGANESE OXIDE ORE IN THIN BEDDED WHITE AND BUFF CHERT. ORE HAS CORES AND PATCHES OF WHITE SILICA. ORE IN SECOND PIT IS MORE SILICEOUS. GREENSTONE IS EXPOSED S. AND E. OF THE PROSPECT, AND QUARTZ MICA SCHIST IS EXPOSED TO THE W.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Terry

Comments on the production information

  • NO PRODUCTION RECORDED. ABOUT 10 TONS OF MANGANESE ORE OBTAINED FROM ONE CUT IS PILED BY ITS SIDE;IT IS BLACK OXIDE ORE WITH CORES AND PATCHES OF WHITE SILICA, ESTIMATED TO CONTAIN 35 TO 40 PERCENT MANGANESE.

Comments on the workings information

  • OPEN CUTS

Reference information

Bibliographic references

  • Deposit

    CALIF. DIV. OF MINES BULL. 125, P. 137

  • Deposit

    D.O.M. BULL. 152, P. 130

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.