data_global
_chemical_name_mineral 'Eucairite'
loop_
_publ_author_name
'Frueh A J'
'Czamanske G K'
'Knight C'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 108 
_journal_year 1957
_journal_page_first 389
_journal_page_last 396
_publ_section_title
;
 The crystallography of eucairite, CuAgSe
 Sample: orthorhombic subcell
;
_database_code_amcsd 0010578
_chemical_compound_source 'Skrikerum, Sweden'
_chemical_formula_sum 'Cu Ag Se'
_cell_length_a 4.105
_cell_length_b 4.07
_cell_length_c 6.31
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 105.423
_exptl_crystal_density_diffrn      7.887
_symmetry_space_group_name_H-M 'P m m n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,y,z'
  '1/2+x,-y,-z'
  '1/2+x,1/2+y,-z'
  '1/2-x,1/2-y,z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Cu   0.25000   0.75000   0.10500
Ag   0.25000   0.25000   0.44900
Se   0.25000   0.25000   0.87300