Citation: Yang, H.; Prewitt, C. T.; Frost, D. J. (1997). Crystal structure of the dense hydrous magnesium silicate, phase D. American Mineralogist, 82, pp. 651-654.
Formula: H2.22 Mg1.11 O6 Si1.89
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: H6 Mg3 O6 Si2 (H6 Mg3 O6 Si2)
Multiplicity: 1