Ahrensite
Yagi T, Marumo F, Akimoto S I
American Mineralogist 59 (1974) 486-490
Crystal structures of spinel polymorphs of Fe2SiO4 and Ni2SiO4
Locality: synthetic
_database_code_amcsd 0000404
8.234 8.234 8.234 90 90 90 Fd3m
atom     x     y     z  occ B(1,1) B(2,2) B(3,3) B(1,2)  B(1,3)  B(2,3)
Fe    .625  .625  .625 .989  .0015  .0015  .0015 -.0001  -.0001  -.0001
Si    .625  .625  .625 .011  .0015  .0015  .0015 -.0001  -.0001  -.0001
Fe       0     0     0 .023  .0010  .0010  .0010      0       0       0
Si       0     0     0 .977  .0010  .0010  .0010      0       0       0
O    .3658 .3658 .3658       .0015  .0015  .0015 -.0001  -.0001  -.0001