Citation: Yoshiasa, A.; Matsumoto, T. (1985). Crystal structure refinement and crystal chemistry of pumpellyite. American Mineralogist, 70, pp. 1011-1019.
Formula: Al2.8 Ca2 Fe0.2 H4 O14 Si3
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al12 Fe4 H16 O56 Si12 (Al3 Fe H4 O14 Si3)
Multiplicity: 1