AM_Richterite_54 Formula: O23.38 F.62 Na1.114 K.872 Al.098 Ti.006 Mg4.872 Mn.072 Sr.051 Ca1.042 Si7.951 H1.38 Name: Richterite Unit cell: 9.998 17.976 5.273 90.0 104.75 90.0 , V=916.45 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(2) Potassium-richterite