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 2, O displaced along [100] Locality: synthetic _database_code_amcsd 0019232 5.0858 5.0858 5.0858 90 90 90 Fm3m atom x y z occ Biso Zr 0 0 0 .875 1.54 Mg 0 0 0 .125 1.54 O .25 .25 .2976 .156 1.43