AM_Dravite_3
Formula: Ca.37 Na.418 K.027 Al6.072 Mg2.538 Fe.549 Ti.036 V.009 Li.006 Cr.009 Si6 B3 O30.866 F.134 H3.018
Name: Dravite
Unit cell: 15.915 15.915 7.187 90.0 90.0 120.0 , V=1576.49
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 LCW2356