AM_Richterite_57 Formula: O23.281 (F.719 Na1.199) K.777 Ti.672 Fe.543 Mg3.964 Mn.016 Ca.97 Si7.72 Al.085 H1.281 Name: Richterite Unit cell: 9.95 18.035 5.284 90.0 104.76 90.0 , V=916.92 Space group: C12/M1 (12)

Oberti R , Ungaretti L , Cannillo E , Hawthorne F C , European Journal of Mineralogy , 4 (1992) p.425-439, The behaviour of Ti in amphiboles: I. Four- and six-coordinate Ti in richterite, Sample: R(6) Potassium-fluor-richterite