Natrolite

Al_1.927H₄Na₂O₁₂Si_3.073

Alberti, A.Cruciani, G.Dauru, I.

European Journal of Mineralogy (1995) 7, 501-508

a=18.347Å   b=18.561Å   c=6.587Å

α=90°   β=90°   γ=90°