La7 (O H)18 I3

H₁₈I₃La₇O₁₈

Lance-Gomez, E.T.Haschke, J.M.Butler, W.Peacor, D.R.

Acta Crystallographica B (24,1968-38,1982) (1978) 34, 758-762

a=18.315Å   b=18.315Å   c=3.928Å

α=90°   β=90°   γ=120°