data_global
_chemical_name_mineral 'Tsaregorodtsevite'
loop_
_publ_author_name
'Sokolova E V'
'Rybakov V B'
'Pautov L A'
_journal_name_full 'Soviet Physics Doklady'
_journal_volume 36 
_journal_year 1991
_journal_page_first 267
_journal_page_last 269
_publ_section_title
;
 The crystal structure of a new natural tetramethylammonium aluminosilicate
 [N(CH3)4][Si2(Si0.5Al0.5)O6]2
 Note: H atoms not located
;
_database_code_amcsd 0020490
_chemical_compound_source 'Northern Ural Mountains, Mankhambo region, Russia'
_chemical_formula_sum 'N C4 Si5 Al O12'
_cell_length_a 8.984
_cell_length_b 8.937
_cell_length_c 8.927
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 716.749
_exptl_crystal_density_diffrn      1.953
_symmetry_space_group_name_H-M 'I 2 2 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,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'
  '-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   0.02280
C1   0.38400   0.37300   0.50100   0.33333   0.04813
C2   0.38100   0.50700   0.37400   0.33333   0.06079
C3   0.00100   0.11700   0.12100   0.33333   0.06206
Si1   0.00000   0.25110   0.50000   1.00000   0.01368
Si2   0.50000   0.00000   0.24910   1.00000   0.01330
Si3   0.25020   0.00000   0.50000   0.50000   0.01381
Al3   0.25020   0.00000   0.50000   0.50000   0.01381
O1  -0.14630   0.14990   0.49700   1.00000   0.04369
O2   0.14560   0.49900   0.14910   1.00000   0.04813
O3   0.00700   0.35400   0.35310   1.00000   0.04939