Citation: Gibbs, G. V.; Breck, D. W.; Meagher, E. P. (1968). Structural refinement of hydrous and anhydrous synthetic beryl, Al2(Be3Si6)O18 and emerald, Al1.9Cr0.1(Be3Si6)O18 Note: anhydrous beryl. Lithos, 1, pp. 275-285.
Formula: Al2 Be3 O18 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: