Citation: Garsche, M.; Tillmanns, E.; Almen, H.; Schneider, H.; Kupcik, V. (1991). Incorporation of chromium into aluminium borate 9Al2O3.2B2O3 (A9B2) Sample: Rietveld refinement of AgB2. European Journal of Mineralogy, 3, pp. 793-808.
Formula: Al4.9 B1.1 O9
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al20 B24 O36 (Al5 B6 O9)
Multiplicity: 1
Coordination sequences: