data_global
_chemical_name_mineral 'Maghemite'
loop_
_publ_author_name
'Shmakov A N'
'Kryukova G N'
'Tsybulya S V'
'Chuvilin A L'
'Solovyeva L P'
_journal_name_full 'Journal of Applied Crystallography'
_journal_volume 28 
_journal_year 1995
_journal_page_first 141
_journal_page_last 145
_publ_section_title
;
 Vacancy ordering in gamma-Fe2O3: synchrotron x-ray powder diffraction and high-
 resolution electron microscopy studies
;
_database_code_amcsd 0020516
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Fe2.668 O4'
_cell_length_a 8.3474
_cell_length_b 8.3474
_cell_length_c 8.3474
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 581.639
_exptl_crystal_density_diffrn      4.864
_symmetry_space_group_name_H-M 'P 43 3 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-z,1/2+x,1/2-y'
  '-y,1/2+z,1/2-x'
  '-x,1/2+y,1/2-z'
  '3/4-x,1/4+z,3/4+y'
  '3/4-z,1/4+y,3/4+x'
  '3/4-y,1/4+x,3/4+z'
  '1/4-x,1/4-z,1/4-y'
  '1/4-z,1/4-y,1/4-x'
  '1/4-y,1/4-x,1/4-z'
  '1/2-z,-x,1/2+y'
  '1/2-y,-z,1/2+x'
  '1/2-x,-y,1/2+z'
  '1/2+z,1/2-x,-y'
  '1/2+y,1/2-z,-x'
  '1/2+x,1/2-y,-z'
  '3/4+x,3/4-z,1/4+y'
  '3/4+z,3/4-y,1/4+x'
  '3/4+y,3/4-x,1/4+z'
  '1/4+x,3/4+z,3/4-y'
  '1/4+z,3/4+y,3/4-x'
  '1/4+y,3/4+x,3/4-z'
  'z,x,y'
  'y,z,x'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Fe1   0.99210   0.99210   0.99210   1.00000   0.00570
Fe2   0.86500   0.61500   0.87500   1.00000   0.00570
Fe3   0.37500   0.12500   0.87500   0.33500   0.00570
O1   0.86100   0.86100   0.86100   1.00000   0.00570
O2   0.37200   0.37700   0.87600   1.00000   0.00570