data_global
_chemical_name_mineral 'Stromeyerite'
loop_
_publ_author_name
'Baker C L'
'Lincoln F J'
'Johnson A W S'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 47 
_journal_year 1991
_journal_page_first 891
_journal_page_last 899
_publ_section_title
;
 A low-temperature structural phase transformation in CuAgS
 Sample: T = 298 K
;
_database_code_amcsd 0009855
_chemical_compound_source 'Gowganda, Ontario, Canada'
_chemical_formula_sum 'Cu Ag S'
_cell_length_a 4.059
_cell_length_b 6.617
_cell_length_c 7.967
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 213.981
_exptl_crystal_density_diffrn      6.316
_symmetry_space_group_name_H-M 'C m c 21'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,z'
  '1/2-x,1/2+y,z'
  '-x,-y,1/2+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
Cu   0.00000   0.43280   0.24860
Ag   0.50000   0.49500   0.50000
S   0.50000   0.28590   0.24840
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Cu 0.01570 0.03140 0.03330 0.00000 0.00000 -0.01000
Ag 0.03600 0.14400 0.03610 0.00000 0.00000 -0.04830
S 0.01350 0.01560 0.03200 0.00000 0.00000 0.00000