Citation: Cameron, M.; Sueno, S.; Papike, J. J.; Prewitt, C. T. (1983). High temperature crystal chemistry of K and Na fluor-richterites K fluor-richterite 400C. American Mineralogist, 68, pp. 924-943.
Formula: Ca2 F2 K2 Mg5 Na2 O22 Si8
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: F4 Mg10 O44 Si16 (F2 Mg5 O22 Si8)
Multiplicity: 1
Coordination sequences: