AM_Hydroxy-schorl
Formula: Na.682 Ca.093 K.009 Fe1.734 Al6.3 Mg.975 Ti.081 Zn.015 Mn.012 Si5.874 B3 O30.795 F.205 H.443
Name: Hydroxy-schorl
Unit cell: 15.9856 15.9856 7.184 90.0 90.0 120.0 , V=1589.85
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: TourmalineTM60e, Locality: Bovey Tracy, Devonshire, England