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Sample n° 8840

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
TANTALITE-(Mn) Mn2+Ta2O6 oxides and hydroxides - major
ZIRCON ZrSiO4 nesosilicates - major
Description
Description: brown-pink tantalaite-(Mn) fragments (1-5 cm), and partially sorted coarse concentrates
Origin
  • Country: Rwanda
  • Region: Gisenyi
  • Locality: Buranga
Specification
  • Donors: Varlamoff
    Donation year: 1961
  • Sampling year:
    Registration date:
  • Quantity: 2
    Size: 2
  • Dimension code 1>2>3: 2
    Quality code 1>2>3: 1
  • Holotype: no
    Paratype: no
    Radioactive: no
  • Thin section: no
    Chemical analysis: no
    X-Ray spectra: yes
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