Citation: Fleet M E; Pan Y (1995). Site preference of rare earth elements in fluorapatite Sample: Gd-FAp. American Mineralogist, 80, pp. 329-335.
Formula: Ca4.52 F Gd0.307 Na0.173 O12 P2.859 Si0.141
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ca10 F2 Gd10 Na10 O24 P6 Si6 (Ca5 F Gd5 Na5 O12 P3 Si3)
Multiplicity: 1