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Blackbird Claim

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 10033584
MRDS ID M020184
Record type Site
Current site name Blackbird Claim
Alternate or previous names Blackhawk
Related records 10165455

Geographic coordinates

Geographic coordinates: -121.42908, 37.3852 (WGS84)
Relative position ON SOME 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 , 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 TO 85 S. W.
    Length 21.34M
    Width 1.22M

Comments on the geologic information

  • GEOL.DESC: SILICEOUS MANGANESE OXIDE BED 70 FT. LONG, MAXIMUM WIDTH OF 4 FT., AND AVERAGE WIDTH OF 2 FT. ORE IS DISCONTINUOUS AND VARIABLE IN GRADE. SOME POCKETS RANGE IN SIZE FROM 2 TO 4 FT. ORE IS RICHEST AT S. END, 30 PERCENT MANGANESE. ORE BODY STRIKES N. W. AND DIPS 60 TO 85 S. W. IT IS OFFSET 8 FT. BY A FAULT 22 FT. N. OF THE S. END, WHICH IS TERMINATED BY ANOTHER FAULT.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 PP. 246 - 247

  • Deposit

    D.O.M. BULL. 125 1943 P. 175

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.