Citation: Schlenker, J.L.; Pluth, J.J.; Smith, J.V. (1977). Dehydrated natural erionite with stacking faults of the offretite type. Acta Crystallographica B (24,1968-38,1982), 33, pp. 3265-3268.
Formula: Al9.1 Ca2.4 K1.6 Mg0.7 Na0.9 O72 Si26.9
Chemical name:K1.6 Ca2 (Na0.9 Mg0.7 Ca0.4) (Al9.1 Si26.9 O72)