data_global
_chemical_name_mineral 'Bridgmanite'
loop_
_publ_author_name
'Tschauner O'
'Ma C'
'Beckett J R'
'Prescher C'
'Prakapenka V B'
'Rossman G R'
_journal_name_full 'Science'
_journal_volume 346 
_journal_year 2014
_journal_page_first 1100
_journal_page_last 1102
_publ_section_title
;
 Discovery of bridgmanite, the most abundant mineral in Earth, in a shocked meteorite
;
_database_code_amcsd 0020220
_chemical_compound_source 'Tenham L6 Chondrite;'
_chemical_formula_sum 'Si.9 Fe.4 Mg.7 Na.03 Ca.02 Mn.01 O3'
_cell_length_a 5.05
_cell_length_b 6.92
_cell_length_c 4.82
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 168.440
_exptl_crystal_density_diffrn      4.522
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-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
Si   0.00000   0.00000   0.50000   0.90000   0.00697
Fe1   0.00000   0.00000   0.50000   0.10000   0.00697
Mg   0.55700   0.25000   0.51300   0.70000   0.00545
Fe2   0.55700   0.25000   0.51300   0.30000   0.00545
Na   0.55700   0.25000   0.51300   0.03000   0.00545
Ca   0.55700   0.25000   0.51300   0.02000   0.00545
Mn   0.55700   0.25000   0.51300   0.01000   0.00545
O1   0.93100   0.25000   0.38100   1.00000   0.00747
O2   0.17600   0.57500   0.16000   1.00000   0.00494