AM_Pargasite_49 Formula: Si6 Al1.89 Ga1.01 Mg4.1 Ca2.21 Na1.62 O22 F2 Name: Pargasite Unit cell: 9.85 17.934 5.301 90.0 105.32 90.0 , V=903.15 Space group: C12/M1 (12)

Oberti R , Hawthorne F C , Camara F , Raudsepp M , The Canadian Mineralogist , 36 (1998) p.1245-1252, Synthetic fluoro-amphiboles: site preferences of Al, Ga, Sc and inductive, effects on mean bond-lengths of octahedra, Sample: A4