AM_Richterite_47 Formula: K.954 (Ca1.02 Na.98) Mg5 Si8 O24 H2 Name: Richterite Unit cell: 10.0439 17.9883 5.2708 90.0 104.803 90.0 , V=920.68 Space group: C12/M1 (12)

Senda K , Ishida K , Jenkins D M , American Mineralogist , 90 (2005) p.1062-1071, X-ray Rietveld refinement and FTIR spectra of synthetic (Si,Ge)-richterites, Sample: KGe0Ri, K in A site, Si100Ge0