Ba2 (Al4 Si12 O32) (H2 O)9.76

Al₄Ba₂H_19.52O_41.76Si₁₂

Cabellal, R.Lucchetti, G.Palenzona, A.Quartieri, S.Vezzalini, G.

European Journal of Mineralogy (1,1989-) (1993) 5, 353-360

a=6.79Å   b=17.581Å   c=7.735Å

α=90°   β=94.5°   γ=90°