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_q1, treated at 750 C for 40 min
Locality: Kimito, Finland
_database_code_amcsd 0018710
4.7516 4.7516 9.2258 90 90 90 P4_2/mnm
atom      x     y      z  occ
Fe(A)     0     0      0 .745
Ta(A)     0     0      0 .255
Fe(B)     0     0 .33192 .127
Ta(B)     0     0 .33192 .808
Nb(B)     0     0 .33192 .065
O1    .3062 .3062      0
O2    .2969 .2969  .3259