Citation: Fleet, M. E. (1990). Refinement of the structure of sodium enneagermanate (Na4Ge9O20). Acta Crystallographica, Section C, 46, pp. 1202-1204.
Formula: Ge8.5 Na4 O20
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ge36 O80 (Ge9 O20)
Multiplicity: 1
Coordination sequences: