AM_Brookite_1 Formula: Ti O2 Name: Brookite Unit cell: 9.175 5.459 5.149 90.0 90.0 90.0 , V=257.89 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 280 degrees C