AM_Thortveitite_2 Formula: (Sc1.6 Y.4) (Si1.96 Al.04) O7 Name: Thortveitite Unit cell: 6.582 8.555 4.693 90.0 102.59 90.0 , V=257.90 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 3 from Flat, Evje