data_global
_chemical_name_mineral 'Majorite'
loop_
_publ_author_name
'Nakatsuka A'
'Yoshiasa A'
'Yamanaka T'
'Ohtaka O'
'Katsura T'
'Ito E'
_journal_name_full 'American Mineralogist'
_journal_volume 84 
_journal_year 1999
_journal_page_first 1135
_journal_page_last 1143
_publ_section_title
;
 Symmetry change of majorite solid-solution in the system Mg3Al2Si3O12-MgSiO3
 Sample: x = .52
;
_database_code_amcsd 0002262
_chemical_formula_sum 'Mg3.52 Al.96 Si3.52 O12'
_cell_length_a 11.4876
_cell_length_b 11.4876
_cell_length_c 11.4876
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1515.961
_exptl_crystal_density_diffrn      3.525
_symmetry_space_group_name_H-M 'I 41/a c d'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '1/4-y,3/4-x,3/4+z'
  '3/4-y,1/4-x,1/4+z'
  '1/4+y,3/4+x,3/4-z'
  '3/4+y,1/4+x,1/4-z'
  '1/4+y,3/4-x,1/4-z'
  '3/4+y,1/4-x,3/4-z'
  '1/4-y,3/4+x,1/4+z'
  '3/4-y,1/4+x,3/4+z'
  '1/2+x,-y,z'
  '+x,1/2-y,1/2+z'
  '1/2-x,y,-z'
  '-x,1/2+y,1/2-z'
  '1/2+x,y,1/2-z'
  '+x,1/2+y,-z'
  '1/2-x,-y,1/2+z'
  '-x,1/2-y,+z'
  '1/4+y,1/4+x,1/4+z'
  '3/4+y,3/4+x,3/4+z'
  '1/4-y,1/4-x,1/4-z'
  '3/4-y,3/4-x,3/4-z'
  '1/4-y,1/4+x,3/4-z'
  '3/4-y,3/4+x,1/4-z'
  '1/4+y,1/4-x,3/4+z'
  '3/4+y,3/4-x,1/4+z'
  '-x,y,1/2+z'
  '1/2-x,1/2+y,+z'
  'x,-y,1/2-z'
  '1/2+x,1/2-y,-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_U_iso_or_equiv
MgX1   0.00000   0.25000   0.12500   1.00000   0.01355
MgX2   0.12502   0.00000   0.25000   1.00000   0.01343
MgY   0.00000   0.00000   0.00000   0.26000   0.00595
AlY   0.00000   0.00000   0.00000   0.48000   0.00595
SiY   0.00000   0.00000   0.00000   0.26000   0.00595
SiZ1   0.00000   0.25000   0.37500   1.00000   0.00684
SiZ2   0.37505   0.00000   0.25000   1.00000   0.00659
O1  -0.03272   0.05022   0.15410   1.00000   0.01064
O2   0.15435  -0.03282   0.05052   1.00000   0.01127
O3   0.05029   0.15399  -0.03288   1.00000   0.01051