Tazheranite Howard C J, Hill R J, Reichert B E Acta Crystallographica B44 (1988) 116-120 Structures of the ZrO2 polymorphs at room temperature by high-resolution neutron powder diffraction Note: model 1, O atom not displaced Locality: synthetic _database_code_amcsd 0019231 5.0858 5.0858 5.0858 90 90 90 Fm3m atom x y z occ Biso Zr 0 0 0 .904 1.54 Mg 0 0 0 .096 1.54 O .25 .25 .25 .952 3.15