AM_Oxy-schorl_2 Formula: Na.727 K.006 Al6.39 Fe1.665 Mg.906 Ti.048 Mn.024 Zn.018 Li.006 Si5.94 B3 O30.793 F.207 Name: Oxy-schorl Unit cell: 15.9669 15.9669 7.1745 90.0 90.0 120.0 , V=1584.03 Space group: R3M (160)

Bosi F , Lucchesi S , European Journal of Mineralogy , 16 (2004) p.335-344, Crystal chemistry of the schorl-dravite series, Note: Tourmaline TMl3l, Locality: Cruziero, Minas Gerais, Brazil