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Keller

Producer in Santa Clara 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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Land status
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10077449
MRDS ID W025091
Record type Site
Current site name Keller
Related records 10164842

Geographic coordinates

Geographic coordinates: -121.4588, 37.37686 (WGS84)
Elevation 756

Site location context

Political divisions (FIPS codes)

Santa Clara(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Boardman(quadrangle 1:24,000 scale)

San Jose(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Francisco Bay(hydrologic unit)

San Francisco Bay(hydrologic accounting unit)

San Francisco Bay(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Santa Clara

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 006S 005E 32 California

Comments on the location information

  • LOCATED IN NW 1/4 SECTION 32

Commodities

Commodity Importance
Manganese Critical Primary

Analytical data

Result AVERAGE GRADE 45 PERCENT MANGANESE

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -121.4588, 37.37686
ListMap

Economic information

Ore body information

  • Strike N 30 W
    Dip NEAR VERTICAL
    Length 10.67M

Comments on the geologic information

  • ORE HOSTED IN FRANCISCAN COMPLEX--L. TO L. ; GEOL.DESC: ORE BODY TRENDS N 30 W, IS NEARLY VERTICAL, AND IS ALMOST PINCHED OUT AT A DEPTH OF 35 FT. ORE BODY WAS SEPARATED FROM WALL ROCK, WHICH CONSISTED OF LEACHED THIN-BEDDED CHERT. A FINE CLAY ZONE ALONG WALLS SUGGESTS THE ORE BODY IS LIMITED BY FAULTS. CHERT ZONE IN WHICH ORE IS FOUND CAN BE TRACED FOR 100 YARDS S., WHERE IT ABUTS A LARGE MASS OF GLAUCOPHANE SCHIST. ORE CONSISTS OF BLACK MANGANESE OXIDE.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Large
Significant No

Land status

Ownership category Private

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES AND GEO. V. 50 , NO. 2 , APR. 1954 , P. 413

  • Deposit

    D.O.M. BULL. 152 1950 P. 253

  • Deposit

    U.S. BUREAU OF MINES R.I. 5254

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1978 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.