1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Section 28

Occurrence 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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10033599
MRDS ID M020202
Record type Site
Current site name Section 28

Geographic coordinates

Geographic coordinates: -121.4288, 37.3852 (WGS84)
Relative position ON SAME RIDGE AS MEXICAN PROSPECTS.

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 28 California

Comments on the location information

  • LOCATED IN NE 1/4 SECTION 28 , MAY BE SAME AS BLACKBIRD DEPOSIT, NAME IS UNDETERMINED, UTM APPROX.

Commodities

Commodity Importance
Manganese Critical Primary

Analytical data

Result AVERAGE GRADE 25 PERCENT MANGANESE

Nearby scientific data

(1) Franciscan melange
ListMap

Economic information

Ore body information

  • Strike NW
    Dip 60 SW TO VERTICAL
    Length 21.34M
    Width 1.22M

Comments on the geologic information

  • GEOL.DESC: SILICEOUS MANGANESE OXIDE BED 70 FT LONG, WITH MAXIMUM WIDTH OF 4 FT., AVERAGE WIDTH OF 2 FT. ORE IS DISCONTINUOUS AND VARIABLE IN GRADE, AND IS SOMETIMES FOUND IN POCKETS 2 TO 4 FT. IN DIAMETER. ORE BODY STRIKES N. W., AND DIPS 60 S. W. TO VERTICAL. IT IS TERMINATED ON THE S. BY A FAULT, AND 22 FT. N. OF S. END IS A FAULT WITH 8 FT. OF DISPLACEMENT.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    TRASK, PARKER. NOTES ON THE MANGANESE RESOURCES OF CALIF., 1944 , UNPUB

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.