data_global
_chemical_name_mineral 'Enstatite'
loop_
_publ_author_name
'Takane K'
_journal_name_full 'Proceedings of the Japan Academy'
_journal_volume 8 
_journal_year 1932
_journal_page_first 308
_journal_page_last 311
_publ_section_title
;
 Crystal Structure of Bronzite from Chichi-jiama in the Bonin Islands
 _cod_database_code 1011018
;
_database_code_amcsd 0017925
_chemical_formula_sum '(Mg.845 Fe.155) Si O3'
_cell_length_a 18.15999
_cell_length_b 8.84
_cell_length_c 5.19
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 833.173
_exptl_crystal_density_diffrn      3.357
_symmetry_space_group_name_H-M 'P b c a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Mg1   0.12500   0.33300   0.37500   0.84500
Fe1   0.12500   0.33300   0.37500   0.15500
Mg2   0.12500  -0.04200   0.37500   0.84500
Fe2   0.12500  -0.04200   0.37500   0.15500
Si1   0.02200  -0.34700   0.29200   1.00000
Si2   0.22800  -0.15300   0.04200   1.00000
O1   0.06100   0.12500   0.20800   1.00000
O2   0.06100   0.51400   0.20800   1.00000
O3   0.04200  -0.25000   0.04200   1.00000
O4   0.18900   0.37800   0.04200   1.00000
O5   0.18900   0.00000   0.04200   1.00000
O6   0.20800  -0.25000   0.29200   1.00000