AM_Hydroxy-schorl_1 Formula: Na.633 K.013 Fe1.668 Al6.675 Mg.663 Ti.051 Li.012 Zn.009 Si5.91 B3 O30.823 F.177 H.512 Name: Hydroxy-schorl Unit cell: 15.9659 15.9659 7.1693 90.0 90.0 120.0 , V=1582.68 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 TMl2ap, Locality: Cruziero, Minas Gerais, Brazil