AM_Fluororichterite_6
Formula:
Si8 Mg5 (Na2 Ca2) K2 O22 F2
Name:
Fluororichterite
Unit cell:
10.041 18.056 5.272 90.0 105.83 90.0 , V=919.57
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, K fluor-richterite 400C