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_q2, treated at 600 C for 20 min
Locality: Kimito, Finland
_database_code_amcsd 0018714
4.7516 4.7516 9.2856 90 90 90 P4_2/mnm
atom      x     y      z  occ
Fe(A)     0     0      0 .491
Ta(A)     0     0      0 .509
Fe(B)     0     0 .33272 .255
Ta(B)     0     0 .33272 .681
Nb(B)     0     0 .33272 .065
O1    .3010 .3010      0
O2    .2990 .2990  .3301