Na Ca (Si O3 (O H))

CaHNaO₄Si

Kenyon, N.J.Weller, M.T.

Microporous and Mesoporous Materials (2003) 59, 185-194

a=5.70751Å   b=7.04953Å   c=5.4693Å

α=90°   β=122.3649°   γ=90°