AM_Pargasite_33 Formula: O24 Si6 Al2.4 Fe1.64 Ti.45 Mg2.91 Ca3.56 Na1.14 K.56 H2 Name: Pargasite Unit cell: 9.919 18.08 5.313 90.0 105.26 90.0 , V=919.21 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 20