AM_Nyboite_1 Formula: Si7.44 Al1.94 Mg2.7 Fe.96 Ti.04 Ca.4 Na2.266 K.042 H1.78 O23.78 F.22 Name: Nyboite Unit cell: 9.678 17.772 5.31 90.0 104.21 90.0 , V=885.36 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: A3 - Q95 N.32