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Mead

Occurrence in Lake 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. Ore body information
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10030669
MRDS ID M008985
Record type Site
Current site name Mead
Related records 10139528

Geographic coordinates

Geographic coordinates: -122.71329, 38.76544 (WGS84)
Relative position ON THE RIDGE BETWEEN BEAR CANYON AND GUNNING CREEKS. IT IS 5 MI. BY ROAD AND 1 MI. BY TRAIL N.W. OF MIDDLETOWN, AND 20 MI. N-NE OF CALISTOGA.

Site location context

Political divisions (FIPS codes)

Lake(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Whispering Pines(quadrangle 1:24,000 scale)

Healdsburg(quadrangle 1:100,000 scale)

Santa Rosa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Lake

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 011N 008W 35 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result ORE GRADE ABOUT 15 PERCENT MANGANESE

Nearby scientific data

(1) -122.71329, 38.76544
ListMap

Economic information

Ore body information

  • Strike E
    Dip 50 S

Comments on the geologic information

  • GEOL.DESC: OUTCROP ON RIDGE OF MANGANIFEROUS CHERT STRIKES E. AND DIPS 50 S. BEST ORE IS SOFT BLACK MANGANESE OXIDE THAT IS 35 PERCENT MANGANESE. MOST ORE IS SILICEOUS AND CUT BY NUMEROUS SMALL QUARTZ VEINS, AND IS ABOUT 15 PERCENT MANGANESE. THE OXIDES FORM THIN FILMS ALONG FRACTURES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Ray Mead

Comments on the production information

  • NO PRODUCTION. MANGANIFEROUS CHERT.

Reference information

Bibliographic references

  • Deposit

    CALIF. B. 125, 1943, P. 126

  • Deposit

    CALIF. BULL. 152, P. 94

General comments

Subject category Comment text
Deposit THE BEST ORE IS A SOFT BLACK MANGANESE OXIDE CONTAINING ABOUT 35% MANGANESE. THE AMOUNT OF THIS ORE IS SMALL.AVERAGE GRADE OF ALL ORE IN SIGHT IS PROBABLY 15% MANGANESE.

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.