data_global
_chemical_name_mineral 'Dickite'
loop_
_publ_author_name
'Bailey S W'
_journal_name_full 'American Mineralogist'
_journal_volume 48
_journal_year 1963
_journal_page_first 1196
_journal_page_last 1209
_publ_section_title
;
 Polymorphism of the kaolin minerals
;
_database_code_amcsd 126
_chemical_formula_sum 'Si2 Al2 O9 H4'
_cell_length_a 5.15
_cell_length_b 8.94
_cell_length_c 14.736
_cell_angle_alpha 90.0
_cell_angle_beta 103.58
_cell_angle_gamma 90.0
_cell_volume 659.492
_exptl_crystal_density_diffrn  2.6
_symmetry_space_group_name_H-M 'C 1 c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+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
Si1   0.0288  0.3499  0.0405
Si2   0.54  0.1768  0.0402
Al1   0.3166  0.4966  0.232
Al2   0.8116  0.333  0.2306
O1   0.0385  0.5127  -0.0061
O2   0.7355  0.2776  -0.0058
O3   0.2412  0.2395  0.0058
O4   0.072  0.3624  0.1523
O5   0.6416  0.1687  0.1526
O-H1   0.5756  0.4742  0.1574
O-H2   0.0509  0.4767  0.2948
O-H3   0.5509  0.3551  0.2981
O-H4   0.9635  0.1668  0.2963