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 = .38
;
_database_code_amcsd 0002261
_chemical_formula_sum 'Mg3.374 Al1.252 Si3.374 O12'
_cell_length_a 11.4833
_cell_length_b 11.4833
_cell_length_c 11.4833
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1514.259
_exptl_crystal_density_diffrn      3.531
_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   0.01532
MgX2   0.12495   0.00000   0.25000   1.00000   0.01532
MgY   0.00000   0.00000   0.00000   0.18700   0.00329
AlY   0.00000   0.00000   0.00000   0.62600   0.00329
SiY   0.00000   0.00000   0.00000   0.18700   0.00329
SiZ1   0.00000   0.25000   0.37500   1.00000   0.00633
SiZ2   0.37505   0.00000   0.25000   1.00000   0.00646
O1  -0.03273   0.05009   0.15398   1.00000   0.01026
O2   0.15438  -0.03268   0.05053   1.00000   0.01051
O3   0.05005   0.15430  -0.03292   1.00000   0.01039