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 Shourdo. American Mineralogist, 83, pp. 590-606.
Formula: Al3.954 Ca1.22 H72.096 K6 Mg0.26 O49.2 Si14.046
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