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Kelly

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

Geologic information

Identification information

Deposit ID 10095036
MRDS ID M004658
Record type Site
Current site name Kelly
Related records 10114492

Geographic coordinates

Geographic coordinates: -121.67131, 37.61685 (WGS84)
Elevation 442

Site location context

Political divisions (FIPS codes)

Alameda(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mendenhall Springs(quadrangle 1:24,000 scale)

Stockton(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 Alameda

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 003E 05 California

Comments on the location information

  • LOCATED IN SE 1/4 NW 1/4 SECTION 5

Commodities

Commodity Importance
Manganese Critical Tertiary

Materials information

Materials Type of material
Psilomelane Ore

Nearby scientific data

(1) -121.67131, 37.61685
ListMap

Economic information

Ore body information

  • Thickness 2.13M

Comments on the geologic information

  • GEOL.DESC: TWO ORE BODIES OF MASSIVE SILICEOUS ORE LIE PARALLEL TO THE BEDDING OF THE ENCLOSING GREEN CHERT AND SHALE. THE STRIKE IS N 65 W AND ARE NEAR VERTICAL ON A HIGH ANGLE TO THE NORTH. PSILOMELANE IS THE PRINCIPLE METALLIFEROUS CONSTITUENT OF THE ORE BUT NEAR THE SURFACE A SMALL QUANTITY OF MANGANESE DIOXIDE IS PRESENT.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Owner
    Owner John M. Kelly And May K. Devany
    First year 1950

Comments on the production information

  • NO PRODUCTION. THE NORTHERN ORE BODY IS 5-7 FT. THICK AND THE SOUTHERN ORE BODY , SEPARATED FROM THE FIRST BY 6 FT. OF BARREN CHERT, IS AT LEAST 3 FT. THICK. ORE MINERALS ARE OXIDES OF MANGANESE, CARRYING A VARIABLE QUANTITY OF WHITE GRANULAR SILICA IN IRREGULAR PATCHES. PSILOMELANE IS PRINCIPAL METALLIFEROUS CONSTITUENT OF THE ORE BUT NEAR THE SURFACE A SMALL QUANTITY OF MANGANESE DIOXIDE IS PRESENT. MOST OF THE ORE IS TOO HIGH IN SILICA TO BE MARKETED WITHOUT RESORT TO SOME PROCESS OF CONCENTRATION

Comments on the workings information

  • A 25FT.SHAFT;SURFACE TRENCHING

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 46, NO.2, APRIL 1950, P.344, PL. 58

  • Deposit

    DOM BULL. 125, P.100

  • Deposit

    BULL. 152, P.22

  • Deposit

    BULL. 140 P. 68 , PL. 1

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. U.S. Geological Survey
Updater 01-APR-1977 Von Dohlen, E.; 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.