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Sample n° 6192

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Minerals found in the sample
Mineral Formula Category Subcategory Importance
META-AUTUNITE Ca(UO2)2(PO4)2•2-6H2O phosphates - major
TRIANGULITE Al3(UO2)4(PO4)4(OH)5•5H2O phosphates - major
BERYL Be3Al2Si6O18 cyclosilicates - minor
COLUMBITE (Fe,Mg,Mn)Nb2O6 oxides and hydroxides - minor
RANUNCULITE Al(UO2)(PO3OH)(OH)3•4H2O phosphates - minor
TANTALITE (Fe2+,Mn2+)Ta2O6 oxides and hydroxides - minor
THREADGOLDITE Al(UO2)2(PO4)2(OH)•8H2O phosphates - minor
ZIRCON ZrSiO4 nesosilicates - minor
Description
Description: sample with triangular golden-yellow triangulite crystals, meta-autunite as pale yellow crystals and cubic crystals, orange-yellow ranunculite nodules, pink zircon bands in columbite, black columbite
Information: holotype of triangulite (IMA Catalogue of Type Mineral Specimens) // Deliens, M. & Piret, P., 1982. Les phosphates d'uranyle et d'aluminium de Kobokobo. VI. La triangulite, Al3(UO2.PO4)4(OH)5.5H2O, nouveau minéral. Bulletin de Minéralogie 105, 611-614.
Origin
  • Country: Congo (RDC)
  • Region: Kivu
  • Locality: Mwenga, Kobokobo
Specification
  • Donors: MGL
    Donation year: 1958
  • Sampling year:
    Registration date:
  • Quantity: 1
    Size: 10 x 9 cm
  • Dimension code 1>2>3: 2
    Quality code 1>2>3: 1
  • Holotype: yes
    Paratype: no
    Radioactive: yes
  • Thin section: no
    Chemical analysis: no
    X-Ray spectra: yes