Citation: Sokolova, E. V.; Yegorov-Tismenko Y K (1990). Crystal structure of girvasite. Doklady Akademii Nauk SSSR, 331, pp. 1372-1376.
Formula: C H12 Ca2 Mg3 Na O21 P3
List type: interleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Mg6 O30 P6 (Mg O5 P)
Multiplicity: 1