AM_Richterite_58 Formula: O22.617 (F1.383 K.986) Ti.32 Fe.292 Mg4.65 Mn.006 Ca1.014 Na.963 Si7.677 Al.053 H.617 Name: Richterite Unit cell: 10.02 18.026 5.282 90.0 104.96 90.0 , V=921.70 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(7) Potassium-fluor-richterite