data_global
_chemical_name_mineral 'Covellite'
loop_
_publ_author_name
'Roberts H'
'Ksanda C'
_journal_name_full 'American Journal of Science'
_journal_volume 17 
_journal_year 1929
_journal_page_first 489
_journal_page_last 503
_publ_section_title
;
 The Crystal Structure of Covellite
 _cod_database_code 1010920
;
_database_code_amcsd 0017645
_chemical_formula_sum 'Cu S'
_cell_length_a 3.802
_cell_length_b 3.802
_cell_length_c 16.42999
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 205.680
_exptl_crystal_density_diffrn      4.631
_symmetry_space_group_name_H-M 'P 63/m m c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x,x-y,1/2-z'
  '-x+y,-x,1/2-z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  'y,x,-z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x+y,y,1/2-z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x,-x+y,-z'
  'x-y,x,-z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,x-y,1/2-z'
  'y,-x+y,1/2+z'
  '-x+y,y,z'
  'x-y,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Cu1   0.33333   0.66667   0.75000
Cu2   0.33333   0.66667   0.09300
S1   0.00000   0.00000   0.12600
S2   0.00000   0.00000   0.00000