Citation: Hughes, J. M.; Drexler, J. W. (1994). Refinement of the structure of gagarinite-(Y), Nax(CaxREE2-x)F6. The Canadian Mineralogist, 32, pp. 563-565.
Formula: Ca0.475 Ce0.005 Dy0.05 Er0.02 F2.7 Gd0.045 Ho0.015 Na0.3 Nd0.005 Sm0.015 Tb0.005 Y0.36 Yb0.005
List type: interleaving
List: 1-3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ca2 Ce2 Dy2 Er2 F6 Gd2 Ho2 Nd2 Sm2 Tb2 Y2 Yb2 (Ca Ce Dy Er F3 Gd Ho Nd Sm Tb Y Yb)
Multiplicity: 1
Basis: (0;0;1)
Dimensionality: 1
Formula: Na2 (Na)
Coordination sequences: