#------------------------------------------------------------------------------
#$Date: 2024-04-18 17:56:43 +0200 (Thu 18 de Apr de 2024) $
#$Revision: 291269 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/10/9001061.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_9001061
loop_
_publ_author_name
'Raudsepp, M.'
'Turnock, A. C.'
'Hawthorne, F. C.'
'Sherriff, B. L.'
'Hartman, J. S.'
_publ_section_title
;Characterization of synthetic pargasitic amphiboles
 (NaCa2Mg4M3+Si6Al2O22(OH,F)2; M3+ = Al,Cr,Ga,Sc,In) by infrared spectroscopy,
 Rietveld structure refinement, and 27Al, 29Si, and 19F MAS NMR spectroscopy
 Sample: FCrPA-A3
;
_journal_name_full               'American Mineralogist'
_journal_page_first              580
_journal_page_last               593
_journal_volume                  72
_journal_year                    1987
_chemical_formula_sum            'Al2 Ca2 Cr0.48 F2 Mg4.52 Na O22 Si6'
_chemical_name_mineral           Pargasite
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 105.108
_cell_angle_gamma                90
_cell_length_a                   9.8402
_cell_length_b                   17.9800
_cell_length_c                   5.2914
_cell_formula_units_Z            2
_cell_volume                     903.832
_database_code_amcsd             0001083
_exptl_crystal_density_diffrn    3.125
_cod_original_formula_sum        'O22 F2 (Si6 Al2) Mg4.52 Cr.48 Ca2 Na'
_cod_database_code               9001061
loop_
_space_group_symop_operation_xyz
x,y,z
1/2+x,1/2+y,z
x,-y,z
1/2+x,1/2-y,z
-x,y,-z
1/2-x,1/2+y,-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
_atom_site_U_iso_or_equiv
O1 0.11300 0.08760 0.21200 1.00000 0.01013
O2 0.11400 0.17030 0.74000 1.00000 0.01013
F3 0.10000 0.00000 0.71400 1.00000 0.01013
O4 0.35900 0.24980 0.79200 1.00000 0.01013
O5 0.36300 0.13790 0.13400 1.00000 0.01393
O6 0.34200 0.11160 0.62200 1.00000 0.01393
O7 0.35600 0.00000 0.29500 1.00000 0.01520
SiT1 0.28170 0.08240 0.30100 0.75000 0.00507
AlT1 0.28170 0.08240 0.30100 0.25000 0.00507
SiT2 0.29240 0.17030 0.81300 0.75000 0.00507
AlT2 0.29240 0.17030 0.81300 0.25000 0.00507
MgM1 0.00000 0.08790 0.50000 0.92000 0.00760
CrM1 0.00000 0.08790 0.50000 0.08000 0.00760
MgM2 0.00000 0.17670 0.00000 0.84000 0.00760
CrM2 0.00000 0.17670 0.00000 0.16000 0.00760
MgM3 0.00000 0.00000 0.00000 1.00000 0.00760
CaM4 0.00000 0.27760 0.50000 1.00000 0.01140
NaA 0.03100 0.50000 0.07200 0.50000 0.02913
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0001083
