General Information:
Chemical Formula:
Al(UO2)2(PO4)2(OH)·8(H2O)
Composition:
(Molecular Weight = 918.11 gm)
Uranium 51.85 % U
Aluminum 2.94 % Al
Phosphorus 6.75 % P
Hydrogen 1.87 % H
Oxygen 36.60 % O
Empirical Formula:
Al(UO2)2(PO4)2(OH)·8(H2O)
Environment:
The P analog of metavanuralite.
IMA Status:
Approved IMA 1979
Locality:
Kobokobo, Kivu, Zaire.
Name Origin:
Named for Ian M. Threadgold (1929-), University of Sydney, NSW, Australia.
Physical Properties:
Cleavage:
[???] Perfect
Color:
greenish yellow.
Density:
3.4
Diaphaniety:
Translucent
Habits:
Micaceous - Platy texture with "flexible" plates., Tabular - Form dimensions are thin in one direction.,
Hardness:
2-3 - Gypsum-Calcite
Luminescence:
Fluorescent, Short UV=pale green, Long UV=green.
Streak:
yellow white
More details...