AM_Richterite_37 Formula: O23.96 F.04 Si7.52 Al.24 Ti.89 Fe.6 Mg3.75 Ca.96 Na1.16 K1.29 H.98 Name: Richterite Unit cell: 9.987 18.065 5.298 90.0 104.82 90.0 , V=924.04 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 26