Citation: Moore, P. B. (1969). The crystal structure of sapphirine. American Mineralogist, 54, pp. 31-49.
Formula: Al9 Mg3.5 O20 Si1.5
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al44 Mg16 O80 Si12 (Al11 Mg4 O20 Si3)
Multiplicity: 1
Coordination sequences: