Citation: Gualtieri, A.; Artioli, G.; Passaglia, E.; Bigi, S.; Viani, A.; Hanson, J. C. (1998). Crystal structure-crystal chemistry relationships in the zeolites erionite and offretite Sample from Agate Beach. American Mineralogist, 83, pp. 590-606.
Formula: Al4.11 Ca1.36 H16.092 K0.87 Mg0.4 O53.58 Si13.89
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