Citation: Redhammer, G\"unther J.; Tippelt, Gerold (2013). The tetragermanates A~2~Ge~4~O~9~ (A = Na, K and Rb). Acta Crystallographica Section C, 69, pp. 995-1001.
Formula: Ge4 K2 O9
Chemical name: Dipotassium tetragermanate
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ge24 O54 (Ge4 O9)
Multiplicity: 1
Coordination sequences: