data_9009234
_chemical_name 'Kaolinite'
loop_
_publ_author_name
'Bish D L'
_journal_name_full "Clays and Clay Minerals"
_journal_volume 41
_journal_year 1993
_journal_page_first 738
_journal_page_last 744
_publ_section_title
;
 Rietveld refinement of the kaolinite structure at 1.5 K
 Note: sample at T = 1.5 K
 Locality: Keokuk, Iowa, USA
;
_chemical_formula_sum 'Al2 Si2 O9 H4'
_cell_length_a 5.1535
_cell_length_b 8.9419
_cell_length_c 7.3906
_cell_angle_alpha 91.926
_cell_angle_beta 105.046
_cell_angle_gamma 89.797
_cell_volume 328.708
_symmetry_space_group_name_H-M 'C 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_Uiso_or_equiv
Al1   0.28900   0.49660   0.46600   0.04000
Al2   0.79300   0.32880   0.46500   0.04000
Si1   0.98900   0.33950   0.09060   0.04200
Si2   0.50700   0.16650   0.09380   0.04200
O1   0.04900   0.34820   0.31680   0.04400
O2   0.11300   0.65990   0.31880   0.04400
O3   0.00000   0.50000   0.00000   0.04400
O4   0.20400   0.22910   0.03000   0.04400
O5   0.19700   0.76410   0.00100   0.04400
O-h1   0.05000   0.97100   0.32500   0.03900
O-h2   0.96000   0.16580   0.60700   0.03900
O-h3   0.03700   0.47260   0.60460   0.03900
O-h4   0.03800   0.85820   0.60900   0.03900
H1   0.14500   0.06510   0.32600   0.07300
H2   0.06300   0.16380   0.73900   0.04700
H3   0.03600   0.50570   0.73200   0.05600
H4   0.53400   0.31540   0.72800   0.04900