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#$Date: 2024-04-18 18:56:43 +0300 (Thu, 18 Apr 2024) $
#$Revision: 291269 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/07/9000743.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_9000743
loop_
_publ_author_name
'Bohlen, S. R.'
'Peacor, D. R.'
'Essene, E. J.'
_publ_section_title
;
 Crystal chemistry of a metamorphic biotite and its significance in water
 barometry
 from Au Sable Forks, New York
;
_journal_name_full               'American Mineralogist'
_journal_page_first              55
_journal_page_last               62
_journal_volume                  65
_journal_year                    1980
_chemical_formula_sum
'Al1.208 Fe1.392 K Mg1.161 O12 Si2.792 Ti0.276'
_chemical_name_mineral           Biotite
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 94.978
_cell_angle_gamma                90
_cell_length_a                   5.357
_cell_length_b                   9.245
_cell_length_c                   20.234
_cell_formula_units_Z            4
_cell_volume                     998.318
_exptl_crystal_density_diffrn    3.069
_cod_original_formula_sum
'K Fe1.392 Mg1.161 Ti.276 (Si2.792 Al1.208) O12'
_cod_database_code               9000743
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_occupancy
K 0.00000 0.08440 0.25000 1.00000
Fe1 0.75000 0.25000 0.00000 0.46400
Mg1 0.75000 0.25000 0.00000 0.38700
Ti1 0.75000 0.25000 0.00000 0.09200
Fe2 0.24800 0.08260 0.00000 0.46400
Mg2 0.24800 0.08260 0.00000 0.38700
Ti2 0.24800 0.08620 0.00000 0.09200
Si1 0.46250 0.25080 0.13730 0.69800
Al1 0.46250 0.25080 0.13730 0.30200
Si2 0.96300 0.41750 0.13750 0.69800
Al2 0.96300 0.41750 0.13750 0.30200
O1 0.73410 0.32010 0.16560 1.00000
O2 0.23680 0.34760 0.16590 1.00000
O3 0.44590 0.08360 0.16600 1.00000
O4 0.43230 0.23950 0.05440 1.00000
O5 0.93610 0.40730 0.05450 1.00000
O6 0.93670 0.07090 0.05370 1.00000
_cod_duplicate_entry 1524087
