data_global
_chemical_name_mineral 'Enstatite'
loop_
_publ_author_name
'Morimoto N'
'Koto K'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 129 
_journal_year 1969
_journal_page_first 65
_journal_page_last 83
_publ_section_title
;
 The crystal structure of orthoenstatite
;
_database_code_amcsd 0010680
_chemical_compound_source 'Bishopville meteorite'
_chemical_formula_sum 'Mg Si O3'
_cell_length_a 18.210
_cell_length_b 8.812
_cell_length_c 5.178
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 830.896
_exptl_crystal_density_diffrn      3.210
_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_U_iso_or_equiv
Mg1   0.37600   0.65440   0.86630   0.00874
Mg2   0.37690   0.48540   0.36090   0.00975
SiA   0.27160   0.34110   0.04940   0.00709
SiB   0.47400   0.33730   0.79880   0.00811
O1A   0.18320   0.33860   0.03490   0.00874
O2A   0.31180   0.50220   0.04300   0.01229
O3A   0.30360   0.22520  -0.16980   0.01444
O1B   0.56280   0.33820   0.80090   0.00849
O2B   0.43370   0.48410   0.68800   0.00899
O3B   0.44700   0.19610   0.60040   0.01229