Citation: Emme, Holger; Huppertz, Hubert (2005). High-pressure syntheses of \a-RE~2~B~4~O~9~ (RE = Sm, Ho), with a structure type displaying edge-sharing BO~4~ tetrahedra. Acta Crystallographica Section C, 61, pp. i29-i31.
Formula: B4 Ho2 O9
Chemical name: Diholmium tetraborate
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: B80 Ho40 O180 (B4 Ho2 O9)
Multiplicity: 1
Coordination sequences: