AM_Pargasite_46 Formula: Si7.08 Al1.85 Mg3.41 Fe.76 Ti.02 Ca.98 Na1.69 K.018 H2 O24 Name: Pargasite Unit cell: 9.839 17.963 5.291 90.0 105.17 90.0 , V=902.53 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: A10 - FE129 N.1