#------------------------------------------------------------------------------
#$Date: 2012-02-28 17:44:07 +0200 (Tue, 28 Feb 2012) $
#$Revision: 35913 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/01/37/9013719.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided the American Mineralogist Crystal Structure Database,
# http://rruff.geo.arizona.edu/AMS/amcsd.php
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_9013719
loop_
_publ_author_name
'Drits, V. A.'
'Zviagina, B. B.'
'McCarty, D. K.'
'Salyn, A. L.'
_publ_section_title
;
 Factors responsible for crystal-chemical variations in the solid solutions
 from illite to aluminoceladonite and from glauconite to celadonite
 Locality: Belgorod, Low Amur, Russia
 Sample Name: M422
;
_journal_name_full               'American Mineralogist'
_journal_page_first              348
_journal_page_last               361
_journal_volume                  95
_journal_year                    2010
_chemical_formula_sum            'Al2 H2 K O12 Si4'
_chemical_name_mineral           Illite
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 101.60
_cell_angle_gamma                90
_cell_length_a                   5.1994
_cell_length_b                   8.9815
_cell_length_c                   10.233
_cell_volume                     468.105
_exptl_crystal_density_diffrn    2.834
_[local]_cod_chemical_formula_sum_orig 'K Al2 Si4 O12 H2'
_cod_database_code               9013719
_amcsd_database_code             AMCSD#0005015
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,z
x,-y,z
1/2+x,1/2-y,z
-x,y,-z
1/2-x,1/2+y,-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
K 0.00000 0.50000 0.50000
Al 0.50000 0.16670 0.00000
Si 0.41890 0.32790 0.26900
O1 0.34740 0.30860 0.10600
O2 0.50130 0.50000 0.31230
O3 0.66970 0.22290 0.33500
O-H 0.41880 0.00000 0.09980