AM_Oxy-schorl_3 Formula: Na.712 K.009 Al6.429 Fe1.617 Mg.879 Ti.051 Mn.027 Zn.024 Li.012 Si5.964 B3 O30.843 F.157 H.14 Name: Oxy-schorl Unit cell: 15.9664 15.9664 7.1758 90.0 90.0 120.0 , V=1584.22 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 TMl4aa, Locality: Cruziero, Minas Gerais, Brazil