Columbite-(Mn) Tarantino S C, Zema M American Mineralogist 90 (2005) 1291-1300 Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study Sample: KRA n3p Qm=1 from Kragero, Norway _database_code_amcsd 0003850 14.4003 5.7501 5.0784 90 90 90 Pbcn atom x y z occ Uiso FeA 0 .31956 .25 .806 .0074 MnA 0 .31956 .25 .148 .0074 TiA 0 .31956 .25 .034 .0074 CaA 0 .31956 .25 .008 .0074 SnA 0 .31956 .25 .003 .0074 ScA 0 .31956 .25 .001 .0074 NbB .162545 .17972 .73927 .901 .0056 TaB .162545 .17972 .73927 .076 .0056 TiB .162545 .17972 .73927 .023 .0056 O1 .09818 .0991 .0581 .0084 O2 .41740 .1164 .0969 .0092 O3 .75611 .1265 .0900 .0073