data_global
_chemical_name_mineral '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 = 960 C
 Atomic parameters obtained from the ICSD
;
_database_code_amcsd 0001720
_chemical_formula_sum '(Mg1.76 Fe.24) Si O4'
_cell_length_a 4.769
_cell_length_b 10.33
_cell_length_c 6.037
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 297.405
_exptl_crystal_density_diffrn      3.311
_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
Mg1   0.00000   0.00000   0.00000   0.90200
Fe1   0.00000   0.00000   0.00000   0.09800
Mg2   0.99230   0.27990   0.25000   0.85800
Fe2   0.99230   0.27990   0.25000   0.14200
Si   0.42700   0.09380   0.25000   1.00000
O1   0.76500   0.09120   0.25000   1.00000
O2   0.22050   0.45020   0.25000   1.00000
O3   0.28250   0.16340   0.03550   1.00000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Mg1 0.01970 0.03260 0.01900 -0.00390 -0.00290 -0.00480
Fe1 0.01970 0.03260 0.01900 -0.00390 -0.00290 -0.00480
Mg2 0.02530 0.02070 0.02590 0.00280 0.00000 0.00000
Fe2 0.02530 0.02070 0.02590 0.00280 0.00000 0.00000
Si 0.00840 0.01910 0.01400 0.00220 0.00000 0.00000
O1 0.01330 0.02750 0.02120 0.00140 0.00000 0.00000
O2 0.02140 0.01250 0.02330 -0.00010 0.00000 0.00000
O3 0.02000 0.02280 0.02080 0.00030 -0.00090 0.00660