data_global
_chemical_name_mineral 'Fayalite'
loop_
_publ_author_name
'Fujino K'
'Sasaki S'
'Takeuchi Y'
'Sadanaga R'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 37 
_journal_year 1981
_journal_page_first 513
_journal_page_last 518
_publ_section_title
;
 X-ray determination of electron distributions in forsterite, fayalite and tephroite
;
_database_code_amcsd 0009731
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Fe2 Si O4'
_cell_length_a 4.8195
_cell_length_b 10.4788
_cell_length_c 6.0873
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 307.424
_exptl_crystal_density_diffrn      4.403
_symmetry_space_group_name_H-M 'P b n m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-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
Fe1   0.00000   0.00000   0.00000   0.00659
Fe2   0.98598   0.28026   0.25000   0.00600
Si   0.43122   0.09765   0.25000   0.00471
O1   0.76814   0.09217   0.25000   0.00646
O2   0.20895   0.45365   0.25000   0.00666
O3   0.28897   0.16563   0.03643   0.00738