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 Kim19_q2, treated at 750 C for 80 min
Locality: Kimito, Finland
_database_code_amcsd 0018711
4.7531 4.7531 9.2219 90 90 90 P4_2/mnm
atom      x     y      z  occ
Fe(A)     0     0      0 .781
Ta(A)     0     0      0 .219
Fe(B)     0     0 .33164 .110
Ta(B)     0     0 .33164 .826
Nb(B)     0     0 .33164 .065
O1    .3073 .3073      0
O2    .2953 .2953  .3235