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 Kim20_q4, treated at 600 C for 200 min
Locality: Kimito, Finland
_database_code_amcsd 0018716
4.7509 4.7509 9.2812 90 90 90 P4_2/mnm
atom      x     y      z  occ
Fe(A)     0     0      0 .500
Ta(A)     0     0      0 .500
Fe(B)     0     0 .33267 .250
Ta(B)     0     0 .33267 .685
Nb(B)     0     0 .33267 .065
O1    .3026 .3026      0
O2    .2984 .2984  .3302