AM_Richterite_36 Formula: O23.96 F.04 Si7.52 Al.24 Ti.89 Fe.6 Mg3.75 Ca.94 Na1.15 K1.32 H.96 Name: Richterite Unit cell: 9.987 18.061 5.298 90.0 104.81 90.0 , V=923.88 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 25