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_q3, treated at 700 C for 450 min Locality: Kimito, Finland _database_code_amcsd 0018725 4.7561 4.7561 9.2030 90 90 90 P4_2/mnm atom x y z occ Fe(A) 0 0 0 .985 Ta(A) 0 0 0 .015 Fe(B) 0 0 .33116 .007 Ta(B) 0 0 .33116 .928 Nb(B) 0 0 .33116 .065 O1 .3118 .3118 0 O2 .2943 .2943 .3219