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Adams and Westendorf

Occurrence in Napa 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. Reporter information

Geologic information

Identification information

Deposit ID 10031632
MRDS ID M010730
Record type Site
Current site name Adams and Westendorf

Geographic coordinates

Geographic coordinates: -122.328, 38.75932 (WGS84)

Site location context

Political divisions (FIPS codes)

Napa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Knoxville(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 Napa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 011N 004W 32 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Economic information

Ore body information

  • Strike N 30 W
    Dip 40 SW
    Thickness 15.24M
    Length 304.8M

Comments on the geologic information

  • GEOL.DESC: MANGANIFEROUS IRON ORE IN ASSOCIATION WITH CHERT IN A BODY OF BASIC LAVAS AND PYROCLASTIC ROCKS OF FRANCISCAN AGE. MANGANIFEROUS BEDS REST ON GREENSTONE, AND ARE OVERLAIN BY FINE GRAINED BASIC LAVA. ORE IS A MIXTURE OF OPAL WITH IRON AND MANGANESE OXIDES. POROUS YELLOW BROWN CHERT COMPOSES 3/4 OF ORE, AND OPALINE IRON MANGANESE MIXTURE COMPOSES 1/4

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Thomas And P. J. Adams

Comments on the production information

  • NO PRODUCTION.

Reference information

Bibliographic references

  • Deposit

    CALIF. BULL. 125, 1943, P. 145

  • Deposit

    BULL. 152, 1950, PP. 154-6

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.