Citation: Gatta, G. D.; Nestola, F.; Bromiley, G. D.; Mattauch, S. (2006). The real topological configuration of the extra-framework content in alkali-poor beryl: a multi-methodological study. American Mineralogist, 91, pp. 29-34.
Formula: Al2 Be3 H0.672 O18.34 Si6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al4 O36 Si12 (Al O9 Si3)
Multiplicity: 1
Coordination sequences: