AM_Thortveitite Formula: (Sc1.12 Y.88) (Si1.96 Al.04) O7 Name: Thortveitite Unit cell: 6.65 8.616 4.686 90.0 102.2 90.0 , V=262.43 Space group: C12/M1 (12)

Bianchi R , Pilati T , Diella V , Gamaccioli C M , Mannucci G , American Mineralogist , 73 (1988) p.601-607, A re-examination of thortveitite, Sample 1 from Iveland