#------------------------------------------------------------------------------
#$Date: 2009-11-18 16:56:34 +0200 (Wed, 18 Nov 2009) $
#$Revision: 858 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9009235.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_9009235
loop_
_publ_author_name
'Zheng H'
'Bailey S W'
_publ_section_title
;
 Refinement of the nacrite structure
 Locality: Red Mountain near Silverton, Colorado, USA
;
_journal_name_full               'Clays and Clay Minerals'
_journal_page_first              46
_journal_page_last               52
_journal_volume                  42
_journal_year                    1994
_chemical_formula_sum            'Al2 H4 O9 Si2'
_[local]_cod_chemical_formula_sum_orig 'Al2 Si2 O9 H4'
_chemical_name_mineral           Nacrite
_symmetry_space_group_name_H-M   'C 1 c 1'
_cell_angle_alpha                90
_cell_angle_beta                 113.58
_cell_angle_gamma                90
_cell_length_a                   8.906
_cell_length_b                   5.146
_cell_length_c                   15.664
_cell_volume                     657.944
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
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Al1 0.15520 0.31980 0.21770
Al2 0.49010 0.32450 0.21730
Sil 0.20120 0.47000 0.02770
Si2 0.37150 0.98310 0.02700
O1 0.24110 0.74990 -0.00410
O2 0.27230 0.24700 -0.01880
O3 0.00290 0.44170 -0.01930
O4 0.26960 0.43850 0.13850
O5 0.46180 0.01100 0.13810
O-h1 0.07950 0.01180 0.14320
O-h2 0.55800 0.63420 0.28380
O-h3 0.17800 0.62960 0.28250
O-h4 0.36930 0.20660 0.28260
H1 0.63460 0.45100 0.12770
H2 0.54750 0.67360 0.32790
H3 0.24320 0.60960 0.32960
H4 0.43170 0.13860 0.32280
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
Al1 0.01148 0.01207 0.01775 0.00000 0.00712 -0.00075
Al2 0.01114 0.01100 0.02193 -0.00064 0.00950 -0.00075
Sil 0.01148 0.00698 0.02193 -0.00021 0.00950 0.00000
Si2 0.01215 0.00872 0.01775 -0.00043 0.00772 -0.00037
O1 0.01586 0.01301 0.02401 0.00596 0.00831 0.00187
O2 0.01789 0.01073 0.02401 -0.00277 0.01128 0.00000
O3 0.01148 0.01664 0.01984 -0.00085 0.00712 0.00112
O4 0.00709 0.00631 0.02506 -0.00085 0.00831 -0.00037
O5 0.01350 0.01543 0.02088 -0.00553 0.00831 0.00150
Oh1 0.01789 0.01274 0.02401 0.00511 0.01247 0.00225
Oh2 0.01823 0.01583 0.02088 -0.00340 0.01069 0.00000
Oh3 0.01451 0.01328 0.01984 0.00149 0.00712 0.00000
Oh4 0.01654 0.02066 0.01671 -0.00213 0.00772 -0.00374