data_global
_chemical_name_mineral 'Forsterite'
loop_
_publ_author_name
'Bocchio R'
'Brajkovic A'
'Pilati T'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_volume 7 
_journal_year 1986
_journal_page_first 313
_journal_page_last 324
_publ_section_title
;
 Crystal chemistry of the olivines in the peridotites from the Ivrea-
 Verbano Zone (Western Italian Alps)
 Note: Sample Mo454
;
_database_code_amcsd 0020393
_chemical_compound_source 'Valsesia, Ivrea-Verbano Zone, Western Italian Alps'
_chemical_formula_sum '(Mg1.684 Fe.316) Si O4'
_cell_length_a 4.765
_cell_length_b 10.245
_cell_length_c 6.001
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 292.953
_exptl_crystal_density_diffrn      3.416
_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   0.84500
Fe1   0.00000   0.00000   0.00000   0.15500
Mg2  -0.01100   0.27783   0.25000   0.83900
Fe2  -0.01100   0.27783   0.25000   0.16100
Si   0.42680   0.09465   0.25000   1.00000
O1   0.76630   0.09180   0.25000   1.00000
O2   0.28070  -0.05200   0.25000   1.00000
O3   0.27900   0.16352   0.03350   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 0.00600 0.00620 0.00480 -0.00010 -0.00070 -0.00110
Fe1 0.00600 0.00620 0.00480 -0.00010 -0.00070 -0.00110
Mg2 0.00750 0.00350 0.00510 0.00000 0.00000 0.00000
Fe2 0.00750 0.00350 0.00510 0.00000 0.00000 0.00000
Si 0.00460 0.00310 0.00440 -0.00010 0.00000 0.00000
O1 0.00520 0.00710 0.00610 -0.00010 0.00000 0.00000
O2 0.00730 0.00350 0.00560 0.00010 0.00000 0.00000
O3 0.00660 0.00580 0.00610 0.00020 0.00010 0.00150