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 Kim5_q1, treated at 750 C for 30 min
Locality: Kimito, Finland
_database_code_amcsd 0018702
4.7554 4.7554 9.2281 90 90 90 P4_2/mnm
atom      x     y      z  occ
Fe(A)     0     0      0 .735
Ta(A)     0     0      0 .265
Fe(B)     0     0 .33177 .132
Ta(B)     0     0 .33177 .803
Nb(B)     0     0 .33177 .065
O1    .3080 .3080      0
O2    .2951 .2951  .3253