Citation: Kolitsch, U. (2001). The crystal structure of trimounsite-(Y), (Y,REE)2Ti2SiO9: an unusual TiO6-based titanate chain. European Journal of Mineralogy, 13, pp. 761-768.
Formula: Er0.466 O9 Si Ti2 Y1.534
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Er8 O36 Si4 Ti8 Y8 (Er2 O9 Si Ti2 Y2)
Multiplicity: 1