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 0019699
_chemical_compound_source 'Synthetic'
_chemical_formula_sum '(Mn.6 Fe1.4) Si O4'
_cell_length_a 4.84857
_cell_length_b 10.55545
_cell_length_c 6.14054
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 314.266
_exptl_crystal_density_diffrn      4.295
_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   0.16100   0.00646
FeM1   0.00000   0.00000   0.00000   0.83900   0.00646
MnM2   0.98450   0.28040   0.25000   0.43900   0.00507
FeM2   0.98450   0.28040   0.25000   0.56100   0.00507
Si   0.42920   0.09660   0.25000   1.00000   0.00494
O1   0.76570   0.09240   0.25000   1.00000   0.00811
O2   0.21240   0.45350   0.25000   1.00000   0.00785
O3   0.28750   0.16430   0.03810   1.00000   0.00735