AM_Uvite_5 Formula: Ca.716 Na.255 Mg3.186 Ti.033 V.201 Li.057 Cr.021 Al5.916 Si5.586 B3 F.915 O33.085 H6.085 Name: Uvite Unit cell: 15.959 15.959 7.175 90.0 90.0 120.0 , V=1582.57 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: T77