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Sample n° 6192

Pictures
         
triangulite
Minerals found in the sample
Mineral Formula Category Subcategory Importance
META-AUTUNITE Ca(UO2)2(PO4)2•2-6H2O phosphates, arsenates and vanadates phosphates major
TRIANGULITE Al3(UO2)4(PO4)4(OH)5•5H2O phosphates, arsenates and vanadates phosphates major
BERYL Be3Al2Si6O18 cyclosilicates beryl minor
COLUMBITE (Mn,Fe,Mg)(Nb,Ta)2O6 oxides and hydroxides - minor
RANUNCULITE Al(UO2)(PO3OH)(OH)3•4H2O phosphates, arsenates and vanadates phosphates minor
TANTALITE (Fe,Mn)Ta2O6 oxides and hydroxides - minor
THREADGOLDITE Al(UO2)2(PO4)2(OH)•8H2O phosphates, arsenates and vanadates 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: Katanga       Locality: Kobokobo
Specification
Donors MGL Sampling year
Donation year 1958 Registration date
 
Quantity 1 Dimension code 1>2>3 2
Size 10 x 9 cm Quality code 1>2>3 1
 
Holotype yes Thin section no
Paratype no Chemical analysis no
Radioactive yes X-Ray spectra yes