#------------------------------------------------------------------------------
#$Date: 2009-11-18 16:56:34 +0200 (Wed, 18 Nov 2009) $
#$Revision: 858 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9009665.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_9009665
loop_
_publ_author_name
'Gualtieri A F'
_publ_section_title
;
 Accuracy of XRPD QPA using the combined Rietveld-RIR method
 Locality: Napoli, Italy
;
_journal_name_full               'Journal of Applied Crystallography'
_journal_page_first              267
_journal_page_last               278
_journal_volume                  33
_journal_year                    2000
_chemical_formula_sum            'Al4 K O12 Si2'
_[local]_cod_chemical_formula_sum_orig 'K Al4 Si2 O12'
_chemical_name_mineral           Illite
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 95.665
_cell_angle_gamma                90
_cell_length_a                   5.2226
_cell_length_b                   9.0183
_cell_length_c                   20.143
_cell_volume                     944.081
loop_
_symmetry_equiv_pos_as_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
-x,y,1/2-z
1/2-x,1/2+y,1/2-z
-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_U_iso_or_equiv
K 0.00000 0.09010 0.25000 0.07500
Al1 0.44320 0.26350 0.13650 0.01100
Al2 0.25860 0.08280 0.00680 0.02700
Si 0.48250 0.92970 0.13700 0.02200
O1 0.46230 0.91940 0.05050 0.01500
O2 0.38350 0.26650 0.06630 0.04700
O3 0.42590 0.10390 0.15300 0.01200
O4 0.22260 0.83680 0.16850 0.04100
O5 0.27350 0.37220 0.16780 0.08000
O6 0.40800 0.56710 0.04540 0.05300