Citation: Cohen, J. P.; Ross, F. K.; Gibbs, G. V. (1977). An X-Ray and neutron diffraction study of hydrous low cordierite. American Mineralogist, 62, pp. 67-78.
Formula: Al3.969 Ca0.02 Fe0.08 H1.12 K0.02 Mg1.91 Mn0.01 Na0.05 O18.56 Si5.031
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al36 Fe8 Mg8 Mn8 O72 Si36 (Al9 Fe2 Mg2 Mn2 O18 Si9)
Multiplicity: 1