Tokkoite

Ca_3.43F_0.61Fe_0.15H_1.39K_1.85Mg_0.06Mn_0.08Na_0.15O_19.39Si₇Ti_0.13

Rozhdestvenskaya, I. V.Nikishova, L. V.Lazebnik Yu, D.Lazebnik, K. A.

Zeitschrift fur Kristallographie (1989) 189, 195-204

a=10.438Å   b=12.511Å   c=7.112Å

α=89.92°   β=99.75°   γ=92.89°