/usr/share/avogadro/crystals/elements/Np-Neptunium-alpha.cif is in avogadro-data 1.2.0-3.
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# All data on this site have been placed in the public domain by the
# contributors.
#------------------------------------------------------------------------------
#$Date: 2010-06-10 15:11:07 +0000 (Thu, 10 Jun 2010) $
#$Revision: 1210 $
#$URL: svn://cod.ibt.lt/cod/cif/9/9008585.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_9008585
loop_
_publ_author_name
'Wyckoff, R. W. G.'
_publ_section_title
;
Second edition. Interscience Publishers, New York, New York
Sample is stable at room conditions
;
_journal_name_full 'Crystal Structures'
_journal_page_first 7
_journal_page_last 83
_journal_volume 1
_journal_year 1963
_chemical_formula_sum Np
_chemical_name_mineral Neptunium-alpha
_space_group_IT_number 62
_symmetry_space_group_name_Hall '-P 2n 2a'
_symmetry_space_group_name_H-M 'P m c n'
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_length_a 4.723
_cell_length_b 4.887
_cell_length_c 6.663
_cell_volume 153.791
_exptl_crystal_density_diffrn 20.472
_cod_database_code 9008585
_amcsd_database_code AMCSD#0010916
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2-x,y,z
1/2+x,-y,-z
1/2+x,1/2+y,1/2-z
1/2-x,1/2-y,1/2+z
x,1/2-y,1/2+z
-x,1/2+y,1/2-z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Np1 0.25000 0.20800 0.03600
Np2 0.25000 0.84200 0.31900
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