Mineralogy Database

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Sample n° 4192

Minerals found in the sample
Mineral Formula Category Subcategory Importance
COLUMBITE (Fe,Mg,Mn)Nb2O6 oxides and hydroxides - major
TANTALITE (Fe2+,Mn2+)Ta2O6 oxides and hydroxides - major
Description
Description: concentrate
Origin
  • Country: Congo (RDC)
  • Region: Katanga
  • Locality: Bukena eluvium
Specification
  • Donors: Rollet
    Donation year: 1954
  • Sampling year:
    Registration date:
  • Quantity: 1 tube
    Size: 3
  • Dimension code 1>2>3: 2
    Quality code 1>2>3: 1
  • Holotype: no
    Paratype: no
    Radioactive: yes
  • Thin section: no
    Chemical analysis: no
    X-Ray spectra: no
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