#------------------------------------------------------------------------------
#$Date: 2024-04-18 18:56:43 +0300 (Thu, 18 Apr 2024) $
#$Revision: 291269 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/07/9000774.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_9000774
loop_
_publ_author_name
'de Villiers, J. P. R.'
_publ_section_title
;The crystal structure of braunite II and its relation to bixbyite and
 braunite
;
_journal_name_full               'American Mineralogist'
_journal_page_first              756
_journal_page_last               765
_journal_volume                  65
_journal_year                    1980
_chemical_formula_sum            'Fe2.38 Mn11.62 O24 Si'
_chemical_name_mineral           Braunite
_space_group_IT_number           142
_symmetry_space_group_name_Hall  '-I 4bd 2c'
_symmetry_space_group_name_H-M   'I 41/a c d :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   9.431
_cell_length_b                   9.431
_cell_length_c                   37.774
_cell_formula_units_Z            8
_cell_volume                     3359.762
_exptl_crystal_density_diffrn    4.679
_cod_original_cell_volume        3359.761
_cod_original_sg_symbol_H-M      'I 41/a c d'
_cod_original_formula_sum        '(Mn11.62 Fe2.38) Si O24'
_cod_database_code               9000774
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,1/2+z
1/4-y,3/4-x,3/4+z
3/4-y,1/4-x,1/4+z
1/4+y,3/4+x,3/4-z
3/4+y,1/4+x,1/4-z
1/4+y,3/4-x,1/4-z
3/4+y,1/4-x,3/4-z
1/4-y,3/4+x,1/4+z
3/4-y,1/4+x,3/4+z
1/2+x,-y,z
+x,1/2-y,1/2+z
1/2-x,y,-z
-x,1/2+y,1/2-z
1/2+x,y,1/2-z
+x,1/2+y,-z
1/2-x,-y,1/2+z
-x,1/2-y,+z
1/4+y,1/4+x,1/4+z
3/4+y,3/4+x,3/4+z
1/4-y,1/4-x,1/4-z
3/4-y,3/4-x,3/4-z
1/4-y,1/4+x,3/4-z
3/4-y,3/4+x,1/4-z
1/4+y,1/4-x,3/4+z
3/4+y,3/4-x,1/4+z
-x,y,1/2+z
1/2-x,1/2+y,+z
x,-y,1/2-z
1/2+x,1/2-y,-z
-x,-y,-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
_atom_site_occupancy
Mn1 0.00000 0.25000 -0.00918 0.83000
Fe1 0.00000 0.25000 -0.00918 0.17000
Mn2 0.20970 0.00000 0.25000 0.83000
Fe2 0.20970 0.00000 0.25000 0.17000
Mn3 0.24080 0.49080 0.12500 0.83000
Fe3 0.24080 0.49080 0.12500 0.17000
Mn4 0.03120 0.00060 0.06290 0.83000
Fe4 0.03120 0.00060 0.06290 0.17000
Mn5 -0.00960 0.00440 0.18772 0.83000
Fe5 -0.00960 0.00440 0.18772 0.17000
Si 0.00000 0.25000 0.37500 1.00000
O1 0.11970 0.17150 0.02560 1.00000
O2 0.33140 0.40100 0.03110 1.00000
O3 0.39820 0.12270 0.04120 1.00000
O4 0.11780 0.40710 0.08970 1.00000
O5 0.17010 0.11210 0.09090 1.00000
O6 0.38740 0.33610 0.10040 1.00000
