data_9001565
_chemical_name 'Taikanite'
loop_
_publ_author_name
'Armbruster T'
'Oberhansli R'
'Kunz M'
_journal_name_full "American Mineralogist"
_journal_volume 78
_journal_year 1993
_journal_page_first 1088
_journal_page_last 1095
_publ_section_title
;
 Taikanite, BaSr2Mn2O2[Si4O12], from the Wessels mine, South Africa: A chain
 silicate related to synthetic Ca3Mn2O2[Si4O12]
;
_chemical_formula_sum 'Ba Sr2 Mn2 Si4 O14'
_cell_length_a 14.600
_cell_length_b 7.759
_cell_length_c 5.142
_cell_angle_alpha 90
_cell_angle_beta 93.25
_cell_angle_gamma 90
_cell_volume 581.556
_symmetry_space_group_name_H-M 'C 1 2 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,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_Uiso_or_equiv
Ba   0.00000   0.22180   0.00000   0.00912
Sr   0.20450  -0.10350  -0.01750   0.00659
Mn1   0.00000  -0.11100   0.50000   0.00570
Mn2   0.00000  -0.30500   0.00000   0.00633
Si1   0.13090  -0.42800  -0.53800   0.00633
Si2  -0.17360   0.19400   0.48700   0.00633
O1  -0.09700  -0.27700  -0.66500   0.01267
O2  -0.16400   0.39900  -0.63100   0.01267
O3  -0.09600   0.08400   0.36600   0.01013
O4   0.05900  -0.12600   0.18600   0.00507
O5   0.18100   0.19100   0.20600   0.00760
O6   0.06200   0.52000   0.22000   0.01140
O7  -0.27200   0.13900  -0.66700   0.00507