Citation: Maisonneuve, V.; LeBlanc, M. (1998). The crystal structure of Na2MgGd2(Si4O12)F2 and its relationship with leucophanite. The Canadian Mineralogist, 36, pp. 1039-1043.
Formula: F2 Gd2 Mg Na2 O12 Si4
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: F4 Gd4 Mg2 O24 Si8 (F2 Gd2 Mg O12 Si4)
Multiplicity: 1
Coordination sequences: