Seidozerite

Ca_1.28F₂Fe_0.42Mn_0.56Na_3.56O₁₆Si₄Ti_0.78Zr_1.4

Skszat, S. M.Simonov, V. I.

Soviet Physics Crystallography (1966) 10, 505-508

a=5.54Å   b=7.10Å   c=18.36Å

α=90°   β=102.40°   γ=90°