AM_Pargasite_19 Formula: O23.88 F.12 Si6 Al2.8 Fe2.82 Ti.45 Mg5.45 Ca3.28 Na1.28 K.55 H2 Name: Pargasite Unit cell: 9.88 18.095 5.322 90.0 105.13 90.0 , V=918.48 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 6