Citation: Sani, A.; Ciambelli, P.; Vezzalini, G.; Rapacciuolo, M.T. (1999). Crystal structure of hydrated and partially (N H4)-exchanged heulandite. Microporous and Mesoporous Materials, 31, pp. 263-270.
Formula: Al6.52 Ca3.54 H51.76 N2.24 Na0.78 O93.4 Si29.48
Chemical name: (N H4)2.24 Na0.78 Ca3.54 (Al6.52 Si29.48 O72) (H2 O)21.4
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al36 O72 Si36 (Al O2 Si)
Multiplicity: 1