data_global
_chemical_name_mineral 'Fayalite'
loop_
_publ_author_name
'Redfern S A T'
'Knight K S'
'Henderson C M B'
'Wood B J'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 62 
_journal_year 1998
_journal_page_first 607
_journal_page_last 615
_publ_section_title
;
 Fe-Mn cation ordering in fayalite-tephroite (FexMn1-x)2SiO4 olivines:
 A neutron diffraction study
;
_database_code_amcsd 0019698
_chemical_compound_source 'Synthetic'
_chemical_formula_sum '(Mn Fe) Si O4'
_cell_length_a 4.86184
_cell_length_b 10.58358
_cell_length_c 6.16950
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 317.456
_exptl_crystal_density_diffrn      4.245
_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_occupancy
_atom_site_U_iso_or_equiv
MnM1   0.00000   0.00000   0.00000   0.33400   0.00519
FeM1   0.00000   0.00000   0.00000   0.66600   0.00519
MnM2   0.97860   0.28240   0.25000   0.66600   0.00519
FeM2   0.97860   0.28240   0.25000   0.33400   0.00519
Si   0.42810   0.09610   0.25000   1.00000   0.00456
O1   0.76360   0.09220   0.25000   1.00000   0.00785
O2   0.21320   0.45360   0.25000   1.00000   0.00760
O3   0.28760   0.16380   0.03840   1.00000   0.00747