General Information:
Chemical Formula:(UO2)·5(UO3)·10(H2O)
Composition:(Molecular Weight = 304.04 gm)Uranium 78.29 %
U Hydrogen 0.66 %
H Oxygen 21.05 %
O Empirical Formula: UO2(OH)2
Environment:Sedimentary uranium deposits.
Locality:Kasolo, Belgian Congo.
Name Origin:From the Greek ianthinos, "violet."
Physical Properties: Cleavage:[100] Perfect
Color:violet black, violet, or violet purple.
Density:5.16
Diaphaniety:Transparent to translucent
Habits:Acicular - Occurs as needle-like crystals., Granular - Generally occurs as anhedral to subhedral crystals in matrix.,
Hardness:2.5-3 - Finger Nail-Calcite
Luster:Sub Metallic
Streak:violet brown
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