data_9001666
_chemical_name 'Forsterite'
loop_
_publ_author_name
'Artioli G'
'Rinaldi R'
'Wilson C C'
'Zanazzi P F'
_journal_name_full "American Mineralogist"
_journal_volume 80
_journal_year 1995
_journal_page_first 197
_journal_page_last 200
_publ_section_title
;
 High-temperature Fe-Mg cation partitioning in olivine: In-situ single-crystal
 neutron diffraction study
 T = room temperature
 Atomic parameters obtained from the ICSD
;
_chemical_formula_sum '(Mg1.76 Fe.24) Si O4'
_cell_length_a 4.740
_cell_length_b 10.230
_cell_length_c 5.960
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 289.002
_symmetry_space_group_name_H-M 'P b n m'
loop_
_symmetry_equiv_pos_as_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
Mg1   0.00000   0.00000   0.00000   0.87900
Fe1   0.00000   0.00000   0.00000   0.12100
Mg2   0.98970   0.27880   0.25000   0.88100
Fe2   0.98970   0.27880   0.25000   0.11900
Si   0.42750   0.09370   0.25000   1.00000
O1   0.76660   0.09090   0.25000   1.00000
O2   0.22070   0.44870   0.25000   1.00000
O3   0.27880   0.16370   0.03370   1.00000