O'Connell Mine

Past Producer in Santa Clara county in California, United States with commodities Chromium, Iron
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. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10165116
MAS/MILS ID 0060850049
Record type Site
Current site name O'Connell Mine
Alternate or previous names O'Connell Number 1, Greenwalt, Greenwalls Property, O'Connell Ranch Mine

Geographic coordinates

Point of reference Trench
Geographic coordinates: -121.68912, 37.19682 (WGS84)
Elevation 201
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Santa Clara(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Morgan Hill(quadrangle 1:24,000 scale)

San Jose(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Coyote(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 008 S 003 E 31 NWSENW California

Commodities

Commodity Importance
Chromium Critical Tertiary
Iron Tertiary

Materials information

Materials Type of material
Chromite Unknown
Magnesite Unknown
Serpentine Unknown
Ulexite Unknown

Nearby scientific data

Trench (1) -121.68912, 37.19682

Economic information

Ore body information

  • Length 45M
    Width 0.5M
    Area 3HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 LENTICULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONITIZATION
    Type of Wallrock Alter. #2 SILICIFICATION
    Strike And Dip N50W:
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 3
    Date of Last Modification 830316

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1953

Mining district

District name Coyote District

Mineral rights holdings

Type of mineral rights Private Lease

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Lake Anderson Corp.
    Interest 100
    Home office California
    Year 1976
    First year 1976
  • Type Operator
    Owner Palo Alto Mining Co.-Last Operators 1955
    Home office California
    Year 1976

Workings at the site

  • Type of workings Surface
    Area 3HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Avg. Overburden Thickness 0
    Primary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 80
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1976

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL VOL.50,NO.2, APR.1954, PP.339,402.

  • Deposit

    1954

General comments

Subject category Comment text
Deposit CALCULATED AVERAGE GRADE OF CONCENTRATE SHIPPED FROM 1953 TO WAS 44.67 PERCENT CR2O3,12.89 PERCENT FE,2.37 TO 1 CR/FE RAT M USBM PRODUCTION RECORD RESERVES ESTIMATED TO BE 280 LONGTONS OF 20 PERCENT CR2O3. FUTURE HOUSING DEVELOPMENT LIKELY INADEQUATE RESOURCES FOR CO YSIS. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-DISSEMIN E,NORTH PIT=S102 5.40,CR2O3 47.50,FEO 13.70,TOTAL FE 16.08,A .34,MGO 11.61,CR/FE 2.60.DISSEMINATED ORE,MIDDLE PIT=S102 8. 3 49.33,FEO 9.92,TOTAL FE 14.47,AL203 10.39,MGO 11.61,CR/FE SSEMINATED ORE SOUTH PIT=S102 6.70,CR2O3 45.67,FEO 11.36,TOT 6.00,AL203 9.45,MGO 12.02,CR/FE 2.50.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Stinson U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.