General Information:
Chemical Formula:PbAl(UO2)5(PO4)2(OH)9·9.5(H2O)
Composition:(Molecular Weight = 2,098.47 gm)Uranium 56.71 %
U Aluminum 1.29 %
AlPhosphorus 2.95 %
P Hydrogen 1.34 %
H Lead 9.87 %
PbOxygen 27.83 %
O Empirical Formula: PbAl(UO2)5(PO4)2(OH)9·9.5(H2O)
IMA Status:Approved IMA 1983
Locality:Kobokobo, Kivu, Zaire.
Name Origin:Named for the mining district at the locality.
Physical Properties: Cleavage:[010] Perfect, [001] Perfect
Color:yellow.
Density:4.03
Diaphaniety:Transparent
Habits:Platy - Sheet forms (e.g. micas)., ,
Hardness:2-3 - Gypsum-Calcite
Luminescence:Non-fluorescent.
Streak:yellow white
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