AM_Pargasite_20 Formula: O26 F2 Si6 Al2.45 Fe.48 Ti.4 Mg4.19 Ca3.4 Na1.36 K.38 H2 Name: Pargasite Unit cell: 9.862 18.003 5.296 90.0 105.19 90.0 , V=907.43 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 7