data_global
_chemical_name_mineral 'Maucherite'
loop_
_publ_author_name
'Fleet M E'
_journal_name_full 'American Mineralogist'
_journal_volume 58 
_journal_year 1973
_journal_page_first 203
_journal_page_last 210
_publ_section_title
;
 The crystal structure of maucherite (Ni11As8)
;
_database_code_amcsd 0000306
_chemical_formula_sum 'Ni11 As8'
_cell_length_a 6.8724
_cell_length_b 6.8724
_cell_length_c 21.821
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1030.603
_exptl_crystal_density_diffrn      8.024
_symmetry_space_group_name_H-M 'P 41 21 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'y,x,-z'
  '1/2-y,1/2+x,1/4+z'
  '1/2-x,1/2+y,1/4-z'
  '-x,-y,1/2+z'
  '-y,-x,1/2-z'
  '1/2+y,1/2-x,3/4+z'
  '1/2+x,1/2-y,3/4-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ni1   0.12500   0.37300   0.26860   0.00836
Ni2   0.37500   0.37500   0.00000   0.00545
Ni3   0.12000   0.56900   0.17340   0.00443
Ni4   0.60800   0.56200   0.17100   0.00443
Ni5   0.37200   0.68300   0.08050   0.00443
Ni6   0.87100   0.69000   0.07700   0.00443
As1   0.12000   0.12000   0.00000   0.00545
As2   0.63500   0.63500   0.00000   0.00545
As3   0.63500   0.12900   0.00040   0.00545
As4   0.87700   0.38200   0.12500   0.00405
As5   0.12100   0.86900   0.12890   0.00405