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_q2, treated at 700 C for 120 min Locality: Kimito, Finland _database_code_amcsd 0018724 4.7511 4.7511 9.2648 90 90 90 P4_2/mnm atom x y z occ Fe(A) 0 0 0 .538 Ta(A) 0 0 0 .462 Fe(B) 0 0 .33248 .231 Ta(B) 0 0 .33248 .704 Nb(B) 0 0 .33248 .065 O1 .3039 .3039 0 O2 .2983 .2983 .3295