Tapiolite-(Fe) Zema M, Tarantino S C, Giorgiani A Mineralogical Magazine 70 (2006) 319-328 Structural changes induced by cation ordering in ferrotapiolite Note: Crystal Kim24_q0, untreated Locality: Kimito, Finland _database_code_amcsd 0018722 4.7562 4.7562 9.2910 90 90 90 P4_2/mnm atom x y z occ Fe(A) 0 0 0 .458 Ta(A) 0 0 0 .542 Fe(B) 0 0 .33288 .271 Ta(B) 0 0 .33288 .664 Nb(B) 0 0 .33288 .065 O1 .3043 .3043 0 O2 .3017 .3017 .3312