Charoite

Ba_0.16Ca_12.82FH_4.18K_6.94Mn_0.18Na_3.18O_92.59Si₃₅Sr_0.5

Rozhdestvenskaya, I.Mugnaioli, E.Czank, M.Depmeier, W.Kolb, U.Reinholdt, A.Weirich, T.

Mineralogical Magazine (2010) 74, 159-177

a=31.96Å   b=19.64Å   c=7.09Å

α=90°   β=90.0°   γ=90°