AM_Anorthite_1 Formula: Ca Si2 Al2 O8 Name: Anorthite Unit cell: 8.223 12.915 14.204 92.75 115.8 91.02 , V=1355.28 Space group: P-1 (2)

Foit F F , Peacor D R , American Mineralogist , 58 (1973) p.665-675, The anorthite crystal structure at 410 and 830 C, T = 830 C