data_global _chemical_name_mineral 'Brewsterite-Sr' loop_ _publ_author_name 'Akizuki M' 'Kudoh Y' 'Kuribayashi T' _journal_name_full 'American Mineralogist' _journal_volume 81 _journal_year 1996 _journal_page_first 1501 _journal_page_last 1506 _publ_section_title ; Crystal structures of the {011}, {610}, and {010} growth sectors in brewsterite Sample: {011} sector ; _database_code_amcsd 0001843 _chemical_formula_sum 'Si5.95 Al2.05 O21 Sr.5 Ba.45 K.01 H10' _cell_length_a 6.786 _cell_length_b 17.517 _cell_length_c 7.742 _cell_angle_alpha 89.85 _cell_angle_beta 94.07 _cell_angle_gamma 90.12 _cell_volume 917.969 _exptl_crystal_density_diffrn 2.440 _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_occupancy _atom_site_U_iso_or_equiv SiTa 0.31660 0.07910 0.82240 0.65000 0.01254 AlTa 0.31660 0.07910 0.82240 0.35000 0.01254 SiTa* 0.31630 0.42080 0.82270 0.60000 0.01330 AlTa* 0.31630 0.42080 0.82270 0.40000 0.01330 SiTb 0.41170 0.05820 0.20950 0.80000 0.01279 AlTb 0.41170 0.05820 0.20950 0.20000 0.01279 SiTb* 0.41020 0.44170 0.21090 0.80000 0.01254 AlTb* 0.41020 0.44170 0.21090 0.20000 0.01254 SiTc 0.55470 0.15820 0.52250 0.60000 0.01153 AlTc 0.55470 0.15820 0.52250 0.40000 0.01153 SiTc* 0.55410 0.34170 0.53440 0.60000 0.01153 AlTc* 0.55410 0.34170 0.53440 0.40000 0.01153 SiTd 0.90450 0.05200 0.64160 0.90000 0.01254 AlTd 0.90450 0.05200 0.64160 0.10000 0.01254 SiTd* 0.90430 0.44800 0.64120 1.00000 0.01191 O1 0.35420 0.10520 0.02790 1.00000 0.01773 O1* 0.35180 0.39500 0.03080 1.00000 0.01773 O2 0.42890 0.12550 0.35370 1.00000 0.02533 O2* 0.42590 0.37450 0.35500 1.00000 0.02533 O3 0.78110 0.12190 0.54540 1.00000 0.02153 O3* 0.78070 0.37860 0.54660 1.00000 0.01900 O4 0.44140 0.13850 0.70800 1.00000 0.02406 O4* 0.44190 0.36090 0.70920 1.00000 0.02533 O5 0.07740 0.08980 0.77110 1.00000 0.02660 O5* 0.07580 0.41040 0.76910 1.00000 0.02533 O6 0.23480 0.99850 0.24440 1.00000 0.03293 O6* 0.23460 0.50140 0.24850 1.00000 0.03166 O7 0.38070 0.98880 0.79870 1.00000 0.01646 O7* 0.38220 0.51150 0.79860 1.00000 0.01773 O8 0.00000 0.00000 0.50000 1.00000 0.03673 O8* 0.00000 0.50000 0.50000 1.00000 0.03546 O9 0.56880 0.25010 0.50440 1.00000 0.03293 Sr 0.24861 0.25009 0.17502 0.50000 0.02204 Ba 0.24861 0.25009 0.17502 0.45000 0.02204 K 0.24861 0.25009 0.17502 0.01000 0.02204 Wat10 0.05690 0.25030 0.46670 1.00000 0.04686 Wat11 0.93400 0.14650 0.14460 1.00000 0.06079 Wat11* 0.93020 0.35350 0.14580 1.00000 0.06079 Wat12 0.59960 0.25040 0.02890 1.00000 0.05193 Wat13 0.08100 0.24990 0.86190 1.00000 0.05066