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 = .64
;
_database_code_amcsd 0002263
_chemical_formula_sum 'Mg3.64 Al.72 Si3.64 O12'
_cell_length_a 11.4891
_cell_length_b 11.4891
_cell_length_c 11.4891
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1516.555
_exptl_crystal_density_diffrn      3.522
_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   0.01874
MgX2   0.12494   0.00000   0.25000   1.00000   0.01849
MgY   0.00000   0.00000   0.00000   0.32000   0.00418
AlY   0.00000   0.00000   0.00000   0.36000   0.00418
SiY   0.00000   0.00000   0.00000   0.32000   0.00418
SiZ1   0.00000   0.25000   0.37500   1.00000   0.00722
SiZ2   0.37500   0.00000   0.25000   1.00000   0.00747
O1  -0.03240   0.05055   0.15462   1.00000   0.01317
O2   0.15446  -0.03260   0.05013   1.00000   0.01305
O3   0.05023   0.15470  -0.03237   1.00000   0.01254