data_global
_chemical_name_mineral 'Akhtenskite'
loop_
_publ_author_name
'Kondrashev Y D'
'Zaslavskii A I'
_journal_name_full 'Izvestiya Akademii Nauk SSSR'
_journal_volume 15 
_journal_year 1951
_journal_page_first 179
_journal_page_last 186
_publ_section_title
;
 The structure of the modifications of manganese oxide
;
_database_code_amcsd 0017794
_chemical_formula_sum 'Mn.5 O'
_cell_length_a 2.786
_cell_length_b 2.786
_cell_length_c 4.412
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 29.657
_exptl_crystal_density_diffrn      4.868
_symmetry_space_group_name_H-M 'P 63 m c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  'y,-x+y,1/2+z'
  '-x+y,y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Mn   0.00000   0.00000   0.00000   0.50000
O   0.33333   0.66667   0.25000   1.00000