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#$Date: 2024-08-03 10:56:24 +0300 (Sat, 03 Aug 2024) $
#$Revision: 293656 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/13/9001388.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_9001388
loop_
_publ_author_name
'Hughes J M'
'Cameron M'
'Crowley K D'
_publ_section_title
;
 Ordering of divalent cations in the apatite structure: Crystal structure
 refinements of natural Mn- and Sr-bearing apatite
 sample Sr.29
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1857
_journal_page_last               1862
_journal_volume                  76
_journal_year                    1991
_chemical_formula_sum            'Ca4.852 F0.89 O12 P3 Sr0.148'
_chemical_name_mineral           Fluorapatite
_space_group_IT_number           176
_symmetry_space_group_name_Hall  '-P 6c'
_symmetry_space_group_name_H-M   'P 63/m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   9.3786
_cell_length_b                   9.3786
_cell_length_c                   6.8922
_cell_formula_units_Z            2
_cell_volume                     525.006
_cod_original_formula_sum        '(Ca4.852 Sr.148) P3 O12 F.89'
_cod_database_code               9001388
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x+y,-x,1/2-z
x-y,x,1/2+z
y,-x+y,-z
-y,x-y,z
x,y,1/2-z
-x,-y,1/2+z
x-y,x,-z
-x+y,-x,z
-y,x-y,1/2-z
y,-x+y,1/2+z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Ca1 0.66667 0.33333 0.00092 0.99800 0.00927
Sr1 0.66667 0.33333 0.00092 0.00200 0.00927
Ca2 -0.00788 0.24114 0.25000 0.95200 0.00849
Sr2 -0.00788 0.24114 0.25000 0.04800 0.00849
P 0.36899 0.39827 0.25000 1.00000 0.00646
O1 0.48520 0.32720 0.25000 1.00000 0.01140
O2 0.46700 0.58790 0.25000 1.00000 0.01241
O3 0.25737 0.34180 0.07060 1.00000 0.01469
F 0.00000 0.00000 0.25000 0.89000 0.02444
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0001422
2 AMCSD 0001426
loop_
_[local]_alternative_name_id
_[local]_alternative_name_type
_[local]_alternative_name_source
_[local]_alternative_name_source_id
_[local]_alternative_name_value
1 mineral AMCSD 0001422 "Fluorapatite"
2 mineral AMCSD 0001426 "Apatite-(CaF)"
_database_code_amcsd 0001422
