Uranosilite

General Information:
 Chemical Formula:
(U++++++O2)Si7O15
 Composition:
(Molecular Weight = 706.62 gm)
Uranium 33.69 % U 
Silicon 27.82 % Si
Oxygen 38.49 % O 
 Empirical Formula:
UO2Si7O15
 IMA Status:
Approved IMA 1983
 Locality:
Menzeschwand, Schwarzwald, Germany.
 Name Origin:
Named in allusion to the composition.
Physical Properties:
 Cleavage:
None
 Color:
yellowish white.
 Density:
3.25
 Habits:
Acicular - Occurs as needle-like crystals., ,
 Luster:
Vitreous (Glassy)
 Streak:
white
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