AM_Schorl_1 Formula: Ca.1 Na.711 K.043 Al7.014 Mg.846 Fe1.233 Ti.048 V.006 Li.006 Zn.006 Si5.832 B3 O30.698 F.302 H3.465 Name: Schorl Unit cell: 15.939 15.939 7.146 90.0 90.0 120.0 , V=1572.23 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 108749