Spurrite

CCa₅O₁₁Si₂

Smith, J. V.Karle, I. L.Hauptman, H.Karle, J.

Acta Crystallographica (1960) 13, 454-458

a=10.49Å   b=6.705Å   c=14.16Å

α=90°   β=101.317°   γ=90°