Citation: Hughes J M; Cameron M; Mariano A N (1991). Rare-earth-element ordering and structural variations in natural rare-earth-bearing apatites sample from the Oka carbonatite. American Mineralogist, 76, pp. 1165-1173.
Formula: Ca4.825 Ce0.165 F0.74 H2 Na0.01 O12.26 P2.841 Si0.159
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ca10 Ce10 F2 Na4 O28 P6 Si6 (Ca5 Ce5 F Na2 O14 P3 Si3)
Multiplicity: 1