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 Kim23_q2, treated at 750 C for 190 min
Locality: Kimito, Finland
_database_code_amcsd 0018721
4.7571 4.7571 9.2189 90 90 90 P4_2/mnm
atom      x     y      z  occ
Fe(A)     0     0      0 .813
Ta(A)     0     0      0 .187
Fe(B)     0     0 .33151 .094
Ta(B)     0     0 .33151 .841
Nb(B)     0     0 .33151 .065
O1    .3116 .3116      0
O2    .2938 .2938  .3238