AM_Dravite_5 Formula: Ca.016 Na.684 K.015 Al6.567 Mg1.305 Fe1.05 Ti.024 V.006 Li.006 Mn.018 Si6 B3 O30.699 F.301 H3.234 Name: Dravite Unit cell: 15.934 15.934 7.167 90.0 90.0 120.0 , V=1575.86 Space group: R3M (160)

Bloodaxe E S , Hughes J M , Dyar M D , Grew E S , Guidotti C V , American Mineralogist , 84 (1999) p.922-928, Linking structure and chemistry in the schorl-dravite series, Sample SmFalls