data_global
_chemical_name_mineral 'Tsaregorodtsevite'
loop_
_publ_author_name
'Sokolova E V'
'Rybakov V B'
'Pautov L A'
'Pushcharovsky D Yu'
_journal_name_full 'Doklady Akademii Nauk SSSR'
_journal_volume 332 
_journal_year 1993
_journal_page_first 309
_journal_page_last 312
_publ_section_title
;
 Structural changes in tsaregorodtsevite
 Note: T = 970 C
;
_database_code_amcsd 0012490
_chemical_formula_sum 'N C8 (Si5 Al) O12'
_cell_length_a 8.817
_cell_length_b 8.817
_cell_length_c 8.817
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 685.429
_exptl_crystal_density_diffrn      2.275
_symmetry_space_group_name_H-M 'I 4 3 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-z,x,-y'
  '1/2-z,1/2+x,1/2-y'
  '-y,z,-x'
  '1/2-y,1/2+z,1/2-x'
  '-x,y,-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,z,y'
  '1/2-x,1/2+z,1/2+y'
  '-z,y,x'
  '1/2-z,1/2+y,1/2+x'
  '-y,x,z'
  '1/2-y,1/2+x,1/2+z'
  '-x,-z,-y'
  '1/2-x,1/2-z,1/2-y'
  '-z,-y,-x'
  '1/2-z,1/2-y,1/2-x'
  '-y,-x,-z'
  '1/2-y,1/2-x,1/2-z'
  '-z,-x,y'
  '1/2-z,1/2-x,1/2+y'
  '-y,-z,x'
  '1/2-y,1/2-z,1/2+x'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  'z,-x,-y'
  '1/2+z,1/2-x,1/2-y'
  'y,-z,-x'
  '1/2+y,1/2-z,1/2-x'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  'x,-z,y'
  '1/2+x,1/2-z,1/2+y'
  'z,-y,x'
  '1/2+z,1/2-y,1/2+x'
  'y,-x,z'
  '1/2+y,1/2-x,1/2+z'
  'x,z,-y'
  '1/2+x,1/2+z,1/2-y'
  'z,y,-x'
  '1/2+z,1/2+y,1/2-x'
  'y,x,-z'
  '1/2+y,1/2+x,1/2-z'
  'z,x,y'
  '1/2+z,1/2+x,1/2+y'
  'y,z,x'
  '1/2+y,1/2+z,1/2+x'
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
N   0.00000   0.00000   0.00000   1.00000 ?
C   0.09000   0.09000   0.09000   1.00000 ?
Si   0.25000   0.50000   0.00000   0.83333   0.05573
Al   0.25000   0.50000   0.00000   0.16667   0.05573
O   0.00000   0.35580   0.35580   1.00000   0.09879