Na3 H Si O4 (H2 O)2

H₅Na₃O₆Si

Schmid, R.L.Szolnai, L.Felsche, J.Huttner, G.

Acta Crystallographica B (24,1968-38,1982) (1981) 37, 789-792

a=10.38Å   b=10.053Å   c=11.414Å

α=90°   β=90°   γ=90°