Reinhardbraunsite

Ca₅H₂O₁₀Si₂

Kuznetsova, T. P.Nevskii, N. N.Ilyukhin, V. V.Belov, N. V.

Soviet Physics Crystallography (1980) 25, 91-92

a=8.9207Å   b=11.4481Å   c=5.0759Å

α=90°   β=90°   γ=108.32°