AM_Brookite Formula: Ti O2 Name: Brookite Unit cell: 9.174 5.449 5.138 90.0 90.0 90.0 , V=256.84 Space group: PBCA (61)

Meagher E P , Lager G A , The Canadian Mineralogist , 17 (1979) p.77-85, Polyhedral thermal expansion in the TiO2 polymorphs: Refinement, of the crystal structures of rutile and brookite at high temperature, Sample at 25 degrees C