data_global
_chemical_name_mineral 'Maleevite'
loop_
_publ_author_name
'Pautov L A'
'Agakhanov A A'
'Sokolova E V'
'Hawthorne F C'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 42 
_journal_year 2004
_journal_page_first 107
_journal_page_last 119
_publ_section_title
;
 Maleevite, BaB2Si2O8, and pekovite, SrB2Si2O8, new mineral species from the
 Dara-i-Pioz alkaline massif, Northern Tajikistan: Description and crystal structure
;
_database_code_amcsd 0005928
_chemical_compound_source 'Dara-i-Pioz alkaline massif, Northern Tajikistan'
_chemical_formula_sum 'Ba B2 Si2 O8'
_cell_length_a 8.141
_cell_length_b 8.176
_cell_length_c 9.038
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 601.577
_exptl_crystal_density_diffrn      3.788
_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_U_iso_or_equiv
BaA   0.38853   0.25000   0.08357   0.01211
BT1   0.27110   0.08550   0.41170   0.00740
SiT2   0.07232   0.93355   0.18988   0.00831
O1   0.21810   0.95380   0.07000   0.01230
O2   0.14580   0.96850   0.35401   0.01100
O3   0.42930   0.06530   0.33690   0.01150
O4   0.49660   0.75000   0.31260   0.01160
O5   0.20830   0.25000   0.38070   0.01010
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
BaA 0.01426 0.01121 0.01087 0.00000 0.00045 0.00000
BT1 0.00860 0.00730 0.00640 -0.00020 0.00010 0.00040
SiT2 0.00930 0.00880 0.00690 -0.00020 -0.00010 0.00000
O1 0.01340 0.01670 0.00680 -0.00280 0.00290 -0.00050
O2 0.01320 0.01190 0.00770 -0.00320 -0.00200 -0.00020
O3 0.01190 0.01140 0.01130 0.00130 0.00210 0.00090
O4 0.01230 0.00890 0.01360 0.00000 -0.00080 0.00000
O5 0.00960 0.00830 0.01260 0.00000 -0.00180 0.00000