AM_Pargasite_48 Formula: Si7.04 Al2.04 Mg3.23 Fe.69 Ca1.76 Na1.204 K.038 H1.96 O23.96 F.04 Name: Pargasite Unit cell: 9.862 17.928 5.295 90.0 105.28 90.0 , V=903.09 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: A12 - KP N.1