data_global
_chemical_name_mineral 'Moschelite'
loop_
_publ_author_name
'Havighurst R'
_journal_name_full 'American Journal of Science'
_journal_volume 10 
_journal_year 1925
_journal_page_first 15
_journal_page_last 28
_publ_section_title
;
 Crystal structure of the mercurous halides
 _cod_database_code 1011370
;
_database_code_amcsd 0018204
_chemical_formula_sum 'Hg I'
_cell_length_a 4.92
_cell_length_b 4.92
_cell_length_c 11.61
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 281.036
_exptl_crystal_density_diffrn      7.740
_symmetry_space_group_name_H-M 'I 4/m m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+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'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-y,x,z'
  '1/2-y,1/2+x,1/2+z'
  'x,-y,z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,-z'
  '1/2-x,1/2+y,1/2-z'
  'x,y,-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+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'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  'y,-x,z'
  '1/2+y,1/2-x,1/2+z'
  '-x,y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Hg1   0.00000   0.00000   0.10500
I1   0.00000   0.00000   0.35500