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
More details...