General Information:
Chemical Formula:
Ca(UO2)2(PO4)2·10-12(H2O)
Composition:
(Molecular Weight = 1,526.31 gm)
Calcium 2.63 % Ca
Uranium 62.38 % U
Phosphorus 4.06 % P
Hydrogen 1.58 % H
Oxygen 29.35 % O
Empirical Formula:
Ca2(UO2)2(PO4)2·12(H2O)
Name Origin:
Named after its locality at Autun, France.
Physical Properties:
Cleavage:
[001] Perfect, [100] Poor, [010] Poor
Color:
yellow, pale yellow, lemon yellow, greenish yellow, or pale green.
Density:
3.1 - 3.2, Average = 3.15
Diaphaniety:
Transparent to translucent
Habits:
Tabular - Form dimensions are thin in one direction., Micaceous - Platy texture with "flexible" plates., Foliated - Two dimensional platy forms.
Hardness:
2-2.5 - Gypsum-Finger Nail
Luminescence:
Fluorescent, Short UV=yellow, Long UV=yellow.
Luster:
Vitreous - Pearly
Streak:
pale yellow
More details...