AM_Leucite_1 Formula: K (Si2 Al) O6 Name: Leucite Unit cell: 12.988 12.988 13.8 90.0 90.0 90.0 , V=2327.90 Space group: I141/A1 (1)

Dove M T , Cool T , Palmer D C , Putnis A , Salje E K H , Winkler B , American Mineralogist , 78 (1993) p.486-492, On the role of Al-Si ordering in the cubic-tetragonal phase transition of, leucite, Sample is Disordered