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Brereton Ew Year, Old Country

Past 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. Land status
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10031323
MRDS ID M010011
Record type Site
Current site name Brereton Ew Year, Old Country
Related records 10212311

Geographic coordinates

Geographic coordinates: -123.11693, 39.8143 (WGS84)
Elevation 610
Relative position ON THE STEEP N. SIDE OF THE RIDGE SLOPING DOWN TOWARD THE MIDDLE FORK OF THE EEL RIVER TO THE W.

Site location context

Political divisions (FIPS codes)

Mendocino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Newhouse Ridge(quadrangle 1:24,000 scale)

Covelo(quadrangle 1:100,000 scale)

Ukiah(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Fork 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 023N 011W 32 California

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Rhodochrosite Ore

Nearby scientific data

(1) -123.11693, 39.8143
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: ORE OCCURRED IN 3 PLACES SEPARATED BY FAULTING, UNDERLAIN BY THIN BEDDED CHERT AND UNDERLAIN BY THICK BEDDED GRAY IRON STAINED CHERTS AND SHALES. ORE BODY IS GRAY MANGANESE CARBONATE COVERED BY BLACK MANGANESE OXIDE FILMS, AND CUT BY VEINLETS OF PINK RHODOCHROSITE. SOME REDDISH-BROWN ORE (POSSIBLY NEOTOCITE) IS ALSO PRESENT. SANDSTONE, GREENSTONE AND DIABASE ARE FOUND AROUND THE CHERT.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category National Forest

Comments on the production information

  • ABOUT 150 TONS OF ORE MINED DURING WORLD WAR I; WORKINGS ARE NOW CAVED AND MINE IDLE.

Comments on the workings information

  • OPEN CUTS AND STOPES.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOLOGY, V. 49, NO. 4, OCT. 1953, PP. 363, 384

  • Deposit

    D.O.M. BULL. 152, PP. 113-4-5

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.