data_global
_chemical_name_mineral 'Tychite'
loop_
_publ_author_name
'Schmidt G R'
'Reynard J'
'Yang H'
'Downs R T'
_journal_name_full 'Acta Crystallographica, Section E'
_journal_volume 62 
_journal_year 2006
_journal_page_first i207
_journal_page_last i209
_publ_section_title
;
 Tychite, Na6Mg2(SO4)(CO3)4: Structure analysis and Raman spectroscopic data
;
_database_code_amcsd 0010470
_chemical_compound_source 'Searles Lake, Trona, San Bernardino County, California, USA'
_chemical_formula_sum 'S Mg2 C4 Na6 O16'
_cell_length_a 13.9038
_cell_length_b 13.9038
_cell_length_c 13.9038
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 2687.822
_exptl_crystal_density_diffrn      2.583
_symmetry_space_group_name_H-M 'F d 3'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2+y,1/2+z'
  '1/2+x,y,1/2+z'
  '1/2+x,1/2+y,z'
  '1/4+z,1/4+x,-y'
  '1/4+z,3/4+x,1/2-y'
  '3/4+z,1/4+x,1/2-y'
  '3/4+z,3/4+x,-y'
  '1/4+z,-x,1/4+y'
  '1/4+z,1/2-x,3/4+y'
  '3/4+z,-x,3/4+y'
  '3/4+z,1/2-x,1/4+y'
  '-z,1/4+x,1/4+y'
  '-z,3/4+x,3/4+y'
  '1/2-z,1/4+x,3/4+y'
  '1/2-z,3/4+x,1/4+y'
  '-z,-x,-y'
  '-z,1/2-x,1/2-y'
  '1/2-z,-x,1/2-y'
  '1/2-z,1/2-x,-y'
  'y,3/4-z,3/4-x'
  'y,1/4-z,1/4-x'
  '1/2+y,3/4-z,1/4-x'
  '1/2+y,1/4-z,3/4-x'
  '3/4-y,3/4-z,x'
  '3/4-y,1/4-z,1/2+x'
  '1/4-y,3/4-z,1/2+x'
  '1/4-y,1/4-z,x'
  '3/4-y,z,3/4-x'
  '3/4-y,1/2+z,1/4-x'
  '1/4-y,z,1/4-x'
  '1/4-y,1/2+z,3/4-x'
  'y,z,x'
  'y,1/2+z,1/2+x'
  '1/2+y,z,1/2+x'
  '1/2+y,1/2+z,x'
  '1/4+x,-y,1/4+z'
  '1/4+x,1/2-y,3/4+z'
  '3/4+x,-y,3/4+z'
  '3/4+x,1/2-y,1/4+z'
  '-x,1/4+y,1/4+z'
  '-x,3/4+y,3/4+z'
  '1/2-x,1/4+y,3/4+z'
  '1/2-x,3/4+y,1/4+z'
  '1/4+x,1/4+y,-z'
  '1/4+x,3/4+y,1/2-z'
  '3/4+x,1/4+y,1/2-z'
  '3/4+x,3/4+y,-z'
  '-x,-y,-z'
  '-x,1/2-y,1/2-z'
  '1/2-x,-y,1/2-z'
  '1/2-x,1/2-y,-z'
  '3/4-z,3/4-x,y'
  '3/4-z,1/4-x,1/2+y'
  '1/4-z,3/4-x,1/2+y'
  '1/4-z,1/4-x,y'
  '3/4-z,x,3/4-y'
  '3/4-z,1/2+x,1/4-y'
  '1/4-z,x,1/4-y'
  '1/4-z,1/2+x,3/4-y'
  'z,3/4-x,3/4-y'
  'z,1/4-x,1/4-y'
  '1/2+z,3/4-x,1/4-y'
  '1/2+z,1/4-x,3/4-y'
  'z,x,y'
  'z,1/2+x,1/2+y'
  '1/2+z,x,1/2+y'
  '1/2+z,1/2+x,y'
  '-y,1/4+z,1/4+x'
  '-y,3/4+z,3/4+x'
  '1/2-y,1/4+z,3/4+x'
  '1/2-y,3/4+z,1/4+x'
  '1/4+y,1/4+z,-x'
  '1/4+y,3/4+z,1/2-x'
  '3/4+y,1/4+z,1/2-x'
  '3/4+y,3/4+z,-x'
  '1/4+y,-z,1/4+x'
  '1/4+y,1/2-z,3/4+x'
  '3/4+y,-z,3/4+x'
  '3/4+y,1/2-z,1/4+x'
  '-y,-z,-x'
  '-y,1/2-z,1/2-x'
  '1/2-y,-z,1/2-x'
  '1/2-y,1/2-z,-x'
  '3/4-x,y,3/4-z'
  '3/4-x,1/2+y,1/4-z'
  '1/4-x,y,1/4-z'
  '1/4-x,1/2+y,3/4-z'
  'x,3/4-y,3/4-z'
  'x,1/4-y,1/4-z'
  '1/2+x,3/4-y,1/4-z'
  '1/2+x,1/4-y,3/4-z'
  '3/4-x,3/4-y,z'
  '3/4-x,1/4-y,1/2+z'
  '1/4-x,3/4-y,1/2+z'
  '1/4-x,1/4-y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
S   0.12500   0.12500   0.12500
Mg   0.00000   0.50000   0.00000
C   0.03207   0.71793   0.03207
Na   0.34379   0.12500   0.12500
O1   0.26626   0.22529   0.35333
O2   0.06362   0.06362   0.06362
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
S 0.01191 0.01191 0.01191 0.00000 0.00000 0.00000
Mg 0.00903 0.00903 0.00903 -0.00030 -0.00030 -0.00030
C 0.00869 0.00869 0.00869 -0.00005 0.00005 -0.00005
Na 0.01389 0.02294 0.02061 -0.00774 0.00000 0.00000
O1 0.01490 0.01169 0.01019 0.00302 0.00191 -0.00012
O2 0.01948 0.01948 0.01948 -0.00351 -0.00351 -0.00351