AM_Richterite_61 Formula: O24 K.969 Ti.388 Fe.323 Mg4.641 Mn.005 Ca1.053 Na.919 Si7.565 Al.077 H2 Name: Richterite Unit cell: 10.028 18.039 5.289 90.0 105.04 90.0 , V=923.98 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(12) Potassium-fluor-richterite, Note: z-coordinate of O2 corrected