AM_Fluororichterite_3 Formula: Si8 Mg5 (Na2 Ca2) K4 O22 F2 Name: Fluororichterite Unit cell: 10.032 18.131 5.284 90.0 106.7 90.0 , V=920.57 Space group: I12/M1 (12)

Cameron M , Sueno S , Papike J J , Prewitt C T , American Mineralogist , 68 (1983) p.924-943, High temperature crystal chemistry of K and Na fluor-richterites, Na fluor-richterite 800C