data_global
_amcsd_formula_title 'NaVSi2O6'
loop_
_publ_author_name
'Ullrich A'
'Miletich R'
'Nestola F'
'Weikusat C'
'Ohashi H'
_journal_name_full 'American Mineralogist'
_journal_volume 94 
_journal_year 2009
_journal_page_first 557
_journal_page_last 564
_publ_section_title
;
 Lattice compression and structural behavior of NaVSi2O6 clinopyroxene to 11 GPa
 Note: P = 4.61 GPa
;
_database_code_amcsd 0004904
_chemical_formula_sum 'Na V Si2 O6'
_cell_length_a 9.545
_cell_length_b 8.634
_cell_length_c 5.233
_cell_angle_alpha 90
_cell_angle_beta 106.59
_cell_angle_gamma 90
_cell_volume 413.307
_exptl_crystal_density_diffrn      3.634
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_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_U_iso_or_equiv
Na   0.00000   0.30490   0.25000   0.01580
V   0.00000   0.90620   0.25000   0.00690
Si   0.29180   0.09260   0.23980   0.00650
O1   0.11480   0.08090   0.14480   0.00450
O2   0.36130   0.25810   0.31530   0.00770
O3   0.35430   0.01370   0.00760   0.00980