data_global
_chemical_name_mineral 'Zircon'
loop_
_publ_author_name
'Wyckoff W'
'Hendricks S'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 66 
_journal_year 1927
_journal_page_first 73
_journal_page_last 102
_publ_section_title
;
 Die Kristallstruktur von Zirkon und die Kriterien fur spezielle Lagen
 in tetragonalen Raumgruppen.
 _cod_database_code 1011263
;
_database_code_amcsd 0018123
_chemical_formula_sum 'Zr Si O4'
_cell_length_a 6.6
_cell_length_b 6.6
_cell_length_c 5.88
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 256.133
_exptl_crystal_density_diffrn      4.754
_symmetry_space_group_name_H-M 'I 41/a m d'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-y,1/2-x,1/4+z'
  '1/2-y,-x,3/4+z'
  '1/2+y,1/2+x,1/2-z'
  '+y,+x,-z'
  '1/2+y,1/2-x,1/2-z'
  '+y,-x,-z'
  '-y,1/2+x,1/4+z'
  '1/2-y,+x,3/4+z'
  '1/2+x,1/2-y,1/2+z'
  '+x,-y,+z'
  '1/2-x,y,3/4-z'
  '-x,1/2+y,1/4-z'
  '1/2+x,y,3/4-z'
  '+x,1/2+y,1/4-z'
  '1/2-x,1/2-y,1/2+z'
  '-x,-y,+z'
  '1/2+y,x,3/4+z'
  '+y,1/2+x,1/4+z'
  '-y,-x,-z'
  '1/2-y,1/2-x,1/2-z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  '1/2+y,-x,3/4+z'
  '+y,1/2-x,1/4+z'
  '-x,y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,1/2-y,1/4-z'
  '1/2+x,-y,3/4-z'
  '-x,1/2-y,1/4-z'
  '1/2-x,-y,3/4-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Zr1   0.00000   0.00000   0.00000
Si1   0.00000   0.00000   0.50000
O1   0.00000   0.20000   0.34000