Na Ca Mg2 F7

CaF₇Mg₂Na

Oliveira, E.A.Guedes, I.Ellena, J.Gesland, J.Y.Ayala, A.P.Moreira, R.L.Grimsditch, M.

Journal of Solid State Chemistry (2004) 177, 2943-2950

a=10.261Å   b=10.261Å   c=10.261Å

α=90°   β=90°   γ=90°