Madagascar volcanic provinces linked to the Gondwana break-up: geochemical and isotopic evidences for contrasting mantle sources
Mineralogy Database
Search | About the mineralogy database | Contact| Sample n° 9852 |
Minerals found in the sample
| Mineral | Formula | Category | Subcategory | Importance |
|---|---|---|---|---|
| PHURALUMITE | Al2(UO2)3(PO4)2(OH)6•10H2O | phosphates, arsenates and vanadates | phosphates | major |
| RANUNCULITE | Al(UO2)(PO3OH)(OH)3•4H2O | phosphates, arsenates and vanadates | phosphates | major |
| COERULEOLACTITE | CaAl6(PO4)4(OH)8•4-5H2O | phosphates, arsenates and vanadates | phosphates | minor |
| COLUMBITE | (Mn,Fe,Mg)(Nb,Ta)2O6 | oxides and hydroxides | - | minor |
Description
| Description: | sample with small veins of yellow phuralumite crystals, ranunculite as yellow crusts and nodules, white coeruleolactite, little columbite |
| Information: | cotype of phuralumite (Deliens & Piret, 1979) (holotype - n° 6201) // Deliens, M. & Piret, P., 1979. Les phosphates d'uranyle et d'aluminium de Kobokobo. II. La phuralumite Al2(UO2)3(PO4)2(OH)2(OH)6.10H2O et l'upalite Al(UO2)3(PO4)2(OH)2(OH)3.6H2O, nouveau minéraux. Bulletin de Minéralogie 102, 333-337. // Piret, P., Piret-Meunier, J. & Declercq, J.P., 1979. Structure of phuralumite. Acta Crystallographica B35, 1880-1882. |
Origin
Country:
Congo (RDC)
Region:
Katanga
Locality:
Kobokobo
Specification
| Donors | Safiannikoff | Sampling year | |
| Donation year | Registration date | ||
| Quantity | 1 | Dimension code 1>2>3 | 3 |
| Size | 5 x 4 cm | Quality code 1>2>3 | 1 |
| Holotype | no | Thin section | no |
| Paratype | yes | Chemical analysis | no |
| Radioactive | yes | X-Ray spectra | yes |
