data_global
_chemical_name_mineral 'Forsterite'
loop_
_publ_author_name
'Nord A G'
'Annersten H'
'Filippidis A'
_journal_name_full 'American Mineralogist'
_journal_volume 67 
_journal_year 1982
_journal_page_first 1206
_journal_page_last 1211
_publ_section_title
;
 The cation distribution in synthetic Mg-Fe-Ni olivines
 sample H2
;
_database_code_amcsd 0000885
_chemical_compound_source 'Synthetic'
_chemical_formula_sum '(Ni.52 Mg1.14 Fe.34) Si O4'
_cell_length_a 4.762
_cell_length_b 10.244
_cell_length_c 5.989
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 292.155
_exptl_crystal_density_diffrn      3.849
_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
Ni1   0.00000   0.00000   0.00000   0.45000  -0.01140
Mg1   0.00000   0.00000   0.00000   0.43000  -0.01140
Fe1   0.00000   0.00000   0.00000   0.12000  -0.01140
Mg2   0.98900   0.27800   0.25000   0.71000  -0.01140
Fe2   0.98900   0.27800   0.25000   0.22000  -0.01140
Ni2   0.98900   0.27800   0.25000   0.07000  -0.01140
Si   0.41800   0.09800   0.25000   1.00000  -0.02913
O1   0.77600   0.10200   0.25000   1.00000  -0.02913
O2   0.20700   0.47000   0.25000   1.00000  -0.02913
O3   0.27400   0.16300   0.02900   1.00000  -0.02913