Na2 Ca3 Si6 O16

Ca₃Na₂O₁₆Si₆

Ihara, M.Setoguchi, M.Odani, K.Yoshida, N.Higashi, T.Fukunaga, J.

Journal of the Ceramic Association, Japan (1984) 92, 1067 373-378

a=10.123Å   b=10.569Å   c=7.117Å

α=109.71°   β=98.24°   γ=78.15°