Citation: Yang, H.; Konzett, J.; Prewitt, C. T. (2001). Crystal structure of phase X, a high pressure alkali-rich hydrous silicate and its anhydrous equivalent Sample: JKW42. American Mineralogist, 86, pp. 1483-1488.
Formula: Al0.12 Mg1.88 Na1.78 O7 Si2
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al2 Mg2 O7 Si2 (Al2 Mg2 O7 Si2)
Multiplicity: 1