Citation: Calestani, G.; Bacca, G.; Andreetti, G.D. (1987). Structural study of zeolite X exchanged with 'f' transition elements.Part II. Crystal structure of hydrated Gd27 Na7 (88) zeolite X. Zeolites, 7, pp. 59-62.
Formula: Al88.11 Gd27 H390 Na7 O579 Si103.9
Chemical name:Na7 Gd27 (Al88.11 Si103.9 O384) (H2 O)195