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 = 870 C
;
_database_code_amcsd 0012489
_chemical_formula_sum 'N C8 Si5 Al O12'
_cell_length_a 8.908
_cell_length_b 8.908
_cell_length_c 8.925
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 708.221
_exptl_crystal_density_diffrn      2.202
_symmetry_space_group_name_H-M 'I 4 2 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'y,x,-z'
  '1/2+y,1/2+x,1/2-z'
  '-y,x,z'
  '1/2-y,1/2+x,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'
  '-y,-x,-z'
  '1/2-y,1/2-x,1/2-z'
  'y,-x,z'
  '1/2+y,1/2-x,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_U_iso_or_equiv
N   0.00000   0.00000   0.00000   1.00000 ?
C   0.07000   0.10500   0.08800   1.00000   0.05446
Si1   0.24890   0.00000   0.50000   1.00000   0.02470
Si2   0.00000   0.50000   0.25000   0.50000   0.02558
Al2   0.00000   0.50000   0.25000   0.50000   0.02558
O1   0.35390   0.35390   0.00000   1.00000   0.06966
O2   0.35030  -0.01000   0.35380   1.00000   0.06193