Citation: Wunder, B.; Rubie, D. C.; Ross, C. R.; Medenbach, O.; Seifert, F.; Schreyer, W. (1993). Synthesis, stability, and properties of Al2SiO4(OH)2: A fully hydrated analogue of topaz. American Mineralogist, 78, pp. 285-297.
Formula: Al2 H2 O6 Si
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al8 O24 Si4 (Al2 O6 Si)
Multiplicity: 1
Coordination sequences: