Citation: Wallace, J. H.; Wenk, H. R. (1980). Structure variation in low cordierites Note: sample sci 552. American Mineralogist, 65, pp. 96-111.
Formula: Al3.856 Fe0.772 H0.72 Mg1.176 O18.72 Si4.878
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al20 Fe8 Mg8 O72 Si28 (Al5 Fe2 Mg2 O18 Si7)
Multiplicity: 1