AM_Ferri-eckermannite Formula: Si7.92 Al.16 Mg3.34 Fe1.174 Mn.126 Ti.04 Li.24 Na2.45 Ca.1 K.2 H2 O23.58 F.42 Name: Ferri-eckermannite Unit cell: 9.771 17.887 5.289 90.0 103.82 90.0 , V=897.62 Space group: C12/M1 (12)

Hawthorne F C , Ungaretti L , Oberti R , Cannillo E , American Mineralogist , 79 (1994) p.443-451, The mechanism of Li incorporation in amphiboles, Sample: A4, Note: Site occupancies are set to be the same as ones in sample A5