#------------------------------------------------------------------------------
#$Date: 2013-03-28 18:17:04 +0200 (Thu, 28 Mar 2013) $
#$Revision: 77586 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/00/00/1000028.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_1000028
loop_
_publ_author_name
'Hassan, I.'
'Grundy, H. D.'
_publ_section_title
;
The Crystal Structures of Sodalite-Group Minerals
;
_journal_coden_ASTM              ASBSDK
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              6
_journal_page_last               13
_journal_volume                  40
_journal_year                    1984
_chemical_formula_structural     'Na8 Al6 Si6 O24 Cl2'
_chemical_formula_sum            'Al6 Cl2 Na8 O24 Si6'
_chemical_name_mineral           Sodalite
_chemical_name_systematic
;
Tetrasodium trialuminium tris(silicate) chloride
;
_symmetry_Int_Tables_number      218
_symmetry_space_group_name_Hall  P_-4n_2_3
_symmetry_space_group_name_H-M   'P -4 3 n'
_cell_angle_alpha                90.000
_cell_angle_beta                 90.000
_cell_angle_gamma                90.000
_cell_formula_units_Z            1
_cell_length_a                   8.875(1)
_cell_length_b                   8.875(1)
_cell_length_c                   8.875(1)
_cell_volume                     699.0(1)
_refine_ls_R_factor_all          0.017
_cod_database_code               1000028
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_attached_hydrogens
_atom_site_calc_flag
_atom_site_thermal_displace_type
_atom_site_U_iso_or_equiv
Na1 Na+0 0.1777(2) 0.1777(2) 0.1777(2) 1.000 8 e ? d ? ?
Al1 Al+0 0.2500 0.0000 0.5000 1.000 6 d ? d ? ?
Si1 Si+0 0.2500 0.5000 0.0000 1.000 6 c ? d ? ?
O1 O+0 0.1387(3) 0.1484(3) 0.4375(2) 1.000 24 i ? d ? ?
Cl1 Cl+0 0.0000 0.0000 0.0000 1.000 2 a ? d ? ?
loop_
_atom_type_symbol
_atom_type_oxidation_number
_atom_type_radius_bond
Na+0 1.000 0.970
Al+0 3.000 0.390
Si+0 4.000 0.260
O+0 -2.000 1.210
Cl+0 -1.000 1.810