data_9001100
_chemical_name 'Olivine'
loop_
_publ_author_name
'Bostrom D'
_journal_name_full "American Mineralogist"
_journal_volume 72
_journal_year 1987
_journal_page_first 965
_journal_page_last 972
_publ_section_title
;
 Single-crystal X-ray diffraction studies of synthetic Ni-Mg olivine solid
 solutions
 Sample: XNi2+ = .69
;
_chemical_formula_sum '(Mg.62 Ni1.38) Si O4'
_cell_length_a 4.7352
_cell_length_b 10.1612
_cell_length_c 5.9317
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 285.406
_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   0.10200
Ni1   0.00000   0.00000   0.00000   0.89800
Mg2   0.99120   0.27440   0.25000   0.51800
Ni2   0.99120   0.27440   0.25000   0.48200
Si   0.42630   0.09380   0.25000   1.00000
O1   0.76750   0.09310   0.25000   1.00000
O2   0.21900   0.44520   0.25000   1.00000
O3   0.27500   0.16270   0.03130   1.00000