data_9002372
_chemical_name 'Wadsleyite'
loop_
_publ_author_name
'Hazen R M'
'Yang H'
'Prewitt C T'
_journal_name_full "American Mineralogist"
_journal_volume 85
_journal_year 2000
_journal_page_first 778
_journal_page_last 783
_publ_section_title
;
 High-pressure crystal chemistry of Fe3+-wadsleyite, beta-Fe2.33Si0.67O4
 Pressure = 8.95 GPa
;
_chemical_formula_sum 'Fe2.33 Si.67 O4'
_cell_length_a 5.7557
_cell_length_b 11.6949
_cell_length_c 8.2433
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 554.876
_symmetry_space_group_name_H-M 'I m m a'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'x,1/2-y,z'
  '1/2+x,-y,1/2+z'
  '-x,1/2+y,-z'
  '1/2-x,+y,1/2-z'
  '-x,y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  'x,1/2+y,-z'
  '1/2+x,+y,1/2-z'
  '-x,1/2-y,z'
  '1/2-x,-y,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_Uiso_or_equiv
Fe1   0.00000   0.00000   0.00000   1.00000   0.00785
Fe2   0.00000   0.25000   0.97150   1.00000   0.00773
Fe3   0.25000   0.12440   0.25000   1.00000   0.00925
SiT   0.00000   0.12040   0.61940   0.67000   0.00532
FeT   0.00000   0.12040   0.61940   0.33000   0.00532
O1   0.00000   0.25000   0.23050   1.00000   0.00887
O2   0.00000   0.25000   0.72430   1.00000   0.01646
O3   0.00000   0.99330   0.25320   1.00000   0.01520
O4   0.25730   0.12330   0.99850   1.00000   0.01267