Burpalite

CaF₂Na₂O₇Si₂Zr

Merlino, S.Perchiazzi, N.Khomyakov, A. P.Pushcharovsky, D. Y.Kulikova, I. M.Kuzmin, V. I.

European Journal of Mineralogy (1990) 2, 177-185

a=10.1173Å   b=10.4446Å   c=7.2555Å

α=90°   β=90.039°   γ=90°