Citation: Armbruster, T.; Oberhansli, R. (1988). Crystal chemistry of double-ring silicates: Structures of sugilite and brannockite. American Mineralogist, 73, pp. 595-600.
Formula: K Li3 O30 Si12 Sn2
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: O60 Si24 Sn4 (O15 Si6 Sn)
Multiplicity: 1
Coordination sequences: