Citation: Romming, C.; Raade, G. (1989). The crystal structure of natural and synthetic holtedahlite. Mineralogy and Petrology, 40, pp. 91-100.
Formula: H7 Mg12 O30 P6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: H6 Mg12 O30 P6 (H Mg2 O5 P)
Multiplicity: 1
Coordination sequences: