Ca3 Al2 (O4 H4)3

Al₂Ca₃H₁₂O₁₂

Lager, G.A.Downs, R.T.Origlieri, M.Garoutte, R.

American Mineralogist (2002) 87, 642-647

a=12.4286Å   b=12.4286Å   c=12.4286Å

α=90°   β=90°   γ=90°