data_global
_chemical_name_mineral 'Dawsonite'
loop_
_publ_author_name
'Corazza E'
'Sabelli C'
'Vannucci S'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_volume 1977 
_journal_year 1977
_journal_page_first 381
_journal_page_last 397
_publ_section_title
;
 Dawsonite: new mineralogical data and structure refinement
;
_database_code_amcsd 0018528
_chemical_compound_source 'Terlano, Bolzano, Italy'
_chemical_formula_sum 'Al Na C O5 H2'
_cell_length_a 6.759
_cell_length_b 5.585
_cell_length_c 10.425
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 393.533
_exptl_crystal_density_diffrn      2.430
_symmetry_space_group_name_H-M 'I m m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'x,1/2-y,z'
  '1/2+x,-y,1/2+z'
  '-x,1/2+y,-z'
  '1/2-x,+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,1/2+y,-z'
  '1/2+x,+y,1/2-z'
  '-x,1/2-y,z'
  '1/2-x,-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_U_iso_or_equiv
Al   0.00000   0.00000   0.50000   0.00735
Na   0.25000   0.75000   0.25000   0.01963
C   0.00000   0.25000   0.25260   0.00887
O1   0.00000   0.25000   0.13260   0.01596
O2   0.00000   0.04740   0.31560   0.01203
O3   0.18110   0.25000   0.52500   0.00937
H   0.27500   0.25000   0.47800   0.01494
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
Al 0.01203 0.00537 0.00440 0.00000 0.00000 -0.00029
Na 0.02662 0.01738 0.01487 0.00000 0.00928 0.00000
C 0.00903 0.01059 0.00716 0.00000 0.00000 0.00000
O1 0.01875 0.02228 0.00661 0.00000 0.00000 0.00000
O2 0.02060 0.00822 0.00716 0.00000 0.00000 0.00177
O3 0.01157 0.00853 0.00826 0.00000 0.00107 0.00000