#------------------------------------------------------------------------------
#$Date: 2009-11-18 16:56:34 +0200 (Wed, 18 Nov 2009) $
#$Revision: 858 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9009602.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_9009602
loop_
_publ_author_name
'Mottana A'
'Rossi G'
'Kracher A'
'Kurat G'
_publ_section_title
;
 Violan revisited: Mn-bearing omphacite and diopside
 Locality: manganese deposit of Praborna, St Marcel, Aosta Valley, Italy
;
_journal_name_full
'Tschermaks Mineralogische und Petrographische Mitteilungen'
_journal_page_first              187
_journal_page_last               201
_journal_volume                  26
_journal_year                    1979
_chemical_formula_sum
'Al0.905 Ca0.952 Fe0.159 Mg0.936 Na1.048 O12 Si4'
_[local]_cod_chemical_formula_sum_orig
'(Na1.048 Ca.952) Mg.936 Fe.159 Al.905 Si4 O12'
_chemical_name_mineral           Omphacite
_symmetry_space_group_name_H-M   'P 1 2/n 1'
_cell_angle_alpha                90
_cell_angle_beta                 106.89
_cell_angle_gamma                90
_cell_length_a                   9.578
_cell_length_b                   8.772
_cell_length_c                   5.253
_cell_volume                     422.310
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2-x,y,1/2-z
1/2+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
Na2 0.25000 0.55270 0.25000 0.71600 0.01077
Ca2 0.25000 0.55270 0.25000 0.28400 0.01077
Ca22 0.25000 0.94970 0.75000 0.66800 0.00925
Na22 0.25000 0.94970 0.75000 0.33200 0.00925
Mg1 0.25000 0.15830 0.25000 0.93600 0.00545
Fe1 0.25000 0.15830 0.25000 0.06400 0.00545
Al11 0.25000 0.34760 0.75000 0.90500 0.00557
Fe11 0.25000 0.34760 0.75000 0.09500 0.00557
Si1 0.53890 0.34650 0.22680 1.00000 0.00494
Si2 0.53720 0.16150 0.73010 1.00000 0.00557
O11 0.36350 0.33720 0.12340 1.00000 0.00823
O12 0.36120 0.17560 0.64610 1.00000 0.00773
O21 0.61340 0.50850 0.30840 1.00000 0.00975
O22 0.60640 0.99760 0.80510 1.00000 0.00988
O31 0.60520 0.26550 0.00320 1.00000 0.00785
O32 0.59890 0.23930 0.49740 1.00000 0.00785
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Na2 0.01515 0.00916 0.00666 0.00000 0.00119 0.00000
Ca2 0.01515 0.00916 0.00666 0.00000 0.00119 0.00000
Ca22 0.01379 0.00557 0.00561 0.00000 -0.00149 0.00000
Na22 0.01379 0.00557 0.00561 0.00000 -0.00149 0.00000
Mg1 0.00489 0.00733 0.00434 0.00000 0.00166 0.00000
Fe1 0.00489 0.00733 0.00434 0.00000 0.00166 0.00000
Al11 0.00668 0.00600 0.00404 0.00000 0.00147 0.00000
Fe11 0.00668 0.00600 0.00404 0.00000 0.00147 0.00000
Si1 0.00591 0.00554 0.00390 -0.00090 0.00215 -0.00022
Si2 0.00626 0.00702 0.00352 0.00008 0.00166 0.00013
O11 0.00545 0.01158 0.00787 -0.00090 0.00245 -0.00067
O12 0.00591 0.00967 0.00782 0.00029 0.00254 0.00087
O21 0.01196 0.00862 0.00845 -0.00273 0.00236 -0.00085
O22 0.01362 0.00784 0.00832 0.00138 0.00313 0.00101
O31 0.00753 0.01107 0.00571 -0.00191 0.00296 -0.00031
O32 0.00787 0.01088 0.00517 -0.00265 0.00226 0.00295