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Usal Manganese Deposits

Occurrence 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. Links to other databases
  10. Bibliographic references
  11. Reporter information

Geologic information

Identification information

Deposit ID 10033497
MRDS ID M020067
Record type Site
Current site name Usal Manganese Deposits
Related records 10139976

Geographic coordinates

Geographic coordinates: -123.81806, 39.89291 (WGS84)
Relative position 4 MI. BY TRAIL FROM USAL

Site location context

Political divisions (FIPS codes)

Mendocino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Piercy(quadrangle 1:24,000 scale)

Covelo(quadrangle 1:100,000 scale)

Ukiah(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big-Navarro-Garcia(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 023N;024N 018W;018W 01,02;26,35,36 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result ORE GRADE 10 TO 25 PERCENT MANGANESE, 25 TO 35 PERCENT IRON, AND 10 TO 15 PERCENT SILICA.

Nearby scientific data

(1) -123.81806, 39.89291
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: MANGANIFEROUS IRON ORE REPLACING LIMESTONE IN A SERIES OF FELDSPATHIC SANDSTONE AND GREENSTONE. GREENSTONE CONSISTS OF FLOWS, TUFFS AND INTRUSIVE ROCKS OF APPROXIMATELY ANDESITIC COMPOSITION. LIMESTONE IS IN LENSES, AND REPLACEMENT BY MANGANIFEROUS IRON DECREASES TOWARD TOP.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 PP. 146 - 147

  • Deposit

    D.O.M. BULL. 125 1943 P. 141

Reporter information

Type Date Name Affiliation Comment
Reporter 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.