Citation: Redhammer, G\"unther R.; Roth, G. (2003). Lithium and sodium yttrium orthosilicate oxyapatite, LiY~9~(SiO~4~)~6~O~2~ and NaY~9~(SiO~4~)~6~O~2~, at both 100K and near room temperature. Acta Crystallographica Section C, 59, pp. i120-i124.
Formula: Na O26 Si6 Y9
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Na4 O26 Si6 Y10 (Na2 O13 Si3 Y5)
Multiplicity: 1
Coordination sequences: