AM_Uvite Formula: Ca.813 Na.173 Mg3.591 Ti.027 V.027 Li.024 Cr.003 Al5.514 Si5.814 B3 F.967 O30.033 H3.033 Name: Uvite Unit cell: 15.949 15.949 7.188 90.0 90.0 120.0 , V=1583.45 Space group: R3M (160)

MacDonald D J , Hawthorne F C , The Canadian Mineralogist , 33 (1995) p.849-858, The crystal chemistry of Si=Al substitution in tourmaline, Sample: T72