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_q1, treated at 750 C for 130 min
Locality: Kimito, Finland
_database_code_amcsd 0018720
4.7538 4.7538 9.2193 90 90 90 P4_2/mnm
atom      x     y      z  occ
Fe(A)     0     0      0 .782
Ta(A)     0     0      0 .218
Fe(B)     0     0 .33166 .109
Ta(B)     0     0 .33166 .826
Nb(B)     0     0 .33166 .065
O1    .3078 .3078      0
O2    .2949 .2949  .3240