Columbite-(Fe) dos Santos C A, Zawislak L I, Kinast E J, Antonietti V, da Cunha J B M Brazilian Journal of Physics 31 (2001) 616-631 Crystal chemistry and structure of the orthorhombic (Fe,Mn)(Ta,Nb)2O6 family of compounds Note: Sample Fe(Ta0.4Nb0.6)2O6 Locality: Brazil _database_code_amcsd 0018629 14.2737 5.73543 5.0554 90 90 90 Pbcn atom x y z occ Fe 0 .335 .25 Nb .1618 .179 .744 .6 Ta .1618 .179 .744 .4 O1 .096 .11 .06 O2 .418 .11 .07 O3 .765 .11 .08