AM_Richterite_59 Formula: O22.556 (F1.444 K) Ti.399 Fe.295 Mg4.656 Mn.007 Ca1.026 Na.935 Si7.58 Al.062 H.556 Name: Richterite Unit cell: 10.022 18.029 5.284 90.0 105.01 90.0 , V=922.17 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(8) Potassium-fluor-richterite