AM_Pargasite_17 Formula: O23.96 F.04 Si6 Al2.8 Fe1.76 Ti.6 Mg2.64 Ca2.96 Na1.67 K.23 H2 Name: Pargasite Unit cell: 9.838 18.025 5.308 90.0 105.01 90.0 , V=909.15 Space group: C12/M1 (12)

Oberti R , Vannucci R , Zanetti A , Tiepolo M , Brumm R C , American Mineralogist , 85 (2000) p.407-419, A Crystal Chemical re-evaluation of amphibole/melt and amphibole/clinopyroxene, DTi values in petrogenetic studies, Sample 4