data_global _chemical_name_mineral 'Vistepite' loop_ _publ_author_name 'Hybler J' 'Petricek V' 'Jurek K' 'Skala R' 'Cisarova I' _journal_name_full 'The Canadian Mineralogist' _journal_volume 35 _journal_year 1997 _journal_page_first 1283 _journal_page_last 1292 _publ_section_title ; Structure determination of vistepite SnMn4B2Si4O16(OH)2: Isotypism with bustamite, revised crystallographic data and composition ; _database_code_amcsd 0005531 _chemical_formula_sum 'Sn Mn4 Si4 B2 H2 O18' _cell_length_a 6.973 _cell_length_b 7.365 _cell_length_c 7.665 _cell_angle_alpha 89.94 _cell_angle_beta 62.94 _cell_angle_gamma 76.88 _cell_volume 339.023 _exptl_crystal_density_diffrn 3.734 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,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 Sn 0.00000 0.00000 0.00000 ? Mn1 0.81080 0.27620 -0.26340 ? Mn2 0.30420 0.28660 -0.26230 ? Si1 0.07420 0.32740 0.24260 ? Si2 0.53270 0.32520 0.22160 ? B -0.25200 0.12200 0.43100 ? H 0.32000 0.02000 0.33000 0.10000 O1 -0.14100 -0.04310 0.28850 ? O2 0.12010 0.21740 0.03750 ? O3 0.56500 0.25490 0.41090 ? O4 0.72820 0.19390 0.02370 ? O5 -0.08970 0.22960 0.42470 ? O6 0.30120 0.27500 0.26180 ? O7 -0.01600 0.54950 0.26360 ? O8 0.51300 0.54450 0.20450 ? O9 -0.35700 0.08270 0.63970 ? 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 Sn 0.00670 0.00900 0.00440 -0.00210 -0.00090 0.00160 Mn1 0.01290 0.01650 0.00760 -0.00410 -0.00280 0.00280 Mn2 0.00830 0.01560 0.00950 -0.00110 -0.00070 0.00260 Si1 0.00600 0.01300 0.00700 -0.00360 -0.00200 0.00300 Si2 0.00600 0.01500 0.00600 -0.00300 -0.00100 0.00220 B 0.01200 0.01300 0.00700 -0.00700 -0.00500 0.00500 O1 0.01500 0.01300 0.01200 -0.00700 -0.00500 0.00300 O2 0.01700 0.01700 0.00900 -0.00900 -0.00500 0.00200 O3 0.01200 0.01700 0.01200 -0.00100 -0.00600 -0.00100 O4 0.01300 0.01400 0.01200 -0.00400 -0.00600 0.00500 O5 0.01000 0.01500 0.01100 -0.00900 -0.00400 0.00300 O6 0.01300 0.02000 0.01500 -0.00900 -0.00400 0.00700 O7 0.01400 0.01300 0.01700 -0.00200 -0.00800 0.00100 O8 0.01300 0.01600 0.01400 -0.00400 -0.00600 0.00100 O9 0.01200 0.01600 0.00700 -0.00600 -0.00100 0.00500