Citation: Yang, P.; Armbruster, T. (1996). Na, K, Rb and Cs exchange in heulandite single-crystals: X-ray structure refinements at 100 K Sample: T = 100 K. Journal of Solid State Chemistry, 123, pp. 140-149.
Formula: Al4.3 Ca0.76 H21.4 Na2.84 O46.7 Si13.7
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