AM_Magnesiotaramite_1 Formula: Si6.08 Al3.12 Mg2.34 Fe1.48 Ti.04 Ca1.2 Na2.74 H2 O24 Name: Magnesiotaramite Unit cell: 9.79 17.899 5.319 90.0 104.9 90.0 , V=900.72 Space group: C12/M1 (12)

Hawthorne F C , Oberti R , Sardone N , The Canadian Mineralogist , 34 (1996) p.577-593, Sodium at the A site in clinoamphiboles: the effects of composition, on patterns of order, Sample: A6 - Q99 N.3