General Information:
Chemical Formula:Ca(UO2)2(PO4)2·10-12(H2O)
Composition:(Molecular Weight = 1,526.31 gm)Calcium 2.63 %
CaUranium 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
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