data_global _chemical_name_mineral 'Slawsonite' loop_ _publ_author_name 'Benna P' 'Bruno E' _journal_name_full 'American Mineralogist' _journal_volume 86 _journal_year 2001 _journal_page_first 690 _journal_page_last 696 _publ_section_title ; Single-crystal in situ high-temperature structural investigation on strontium feldspar Sample T = 160 C ; _database_code_amcsd 0002653 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Sr (Al1.9 Si2.1) O8' _cell_length_a 8.392 _cell_length_b 12.967 _cell_length_c 14.260 _cell_angle_alpha 90 _cell_angle_beta 115.43 _cell_angle_gamma 90 _cell_volume 1401.411 _exptl_crystal_density_diffrn 3.089 _symmetry_space_group_name_H-M 'I 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' 'x,-y,1/2+z' '1/2+x,1/2-y,+z' '-x,y,1/2-z' '1/2-x,1/2+y,-z' '-x,-y,-z' '1/2-x,1/2-y,1/2-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 Sr 0.27070 -0.00180 0.06570 1.00000 0.02500 AlT1(0) 0.00670 0.17530 0.10850 0.19000 0.01100 SiT1(0) 0.00670 0.17530 0.10850 0.81000 0.01100 AlT1(z) 0.00360 0.17810 0.61620 0.81000 0.01000 SiT1(z) 0.00360 0.17810 0.61620 0.19000 0.01000 AlT2(0) 0.69490 0.12040 0.17080 0.76000 0.01000 SiT2(0) 0.69490 0.12040 0.17080 0.24000 0.01000 AlT2(z) 0.68640 0.11340 0.67180 0.14000 0.01000 SiT2(z) 0.68640 0.11340 0.67180 0.86000 0.01000 OA(1) 0.00430 0.12960 0.00040 1.00000 0.01600 OA(2) 0.59370 -0.00020 0.14300 1.00000 0.01700 OB(0) 0.82800 0.12700 0.10680 1.00000 0.02200 OB(z) 0.81050 0.12760 0.61160 1.00000 0.02200 OC(0) 0.01380 0.29870 0.11870 1.00000 0.02100 OC(z) 0.01980 0.30960 0.63080 1.00000 0.02100 OD(0) 0.18620 0.12550 0.19640 1.00000 0.02400 OD(z) 0.19630 0.11910 0.70320 1.00000 0.02100 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 Sr 0.01100 0.03500 0.02700 0.00000 0.00400 -0.00300 AlT1(0) 0.01000 0.01300 0.00900 -0.00300 0.00400 -0.00100 SiT1(0) 0.01000 0.01300 0.00900 -0.00300 0.00400 -0.00100 AlT1(z) 0.00900 0.01300 0.00900 -0.00300 0.00300 -0.00100 SiT1(z) 0.00900 0.01300 0.00900 -0.00300 0.00300 -0.00100 AlT2(0) 0.00800 0.01100 0.01000 -0.00100 0.00300 0.00000 SiT2(0) 0.00800 0.01100 0.01000 -0.00100 0.00300 0.00000 AlT2(z) 0.00700 0.01000 0.01200 -0.00100 0.00300 0.00000 SiT2(z) 0.00700 0.01000 0.01200 -0.00100 0.00300 0.00000 OA(1) 0.01900 0.02100 0.01000 -0.00200 0.00700 -0.00300 OA(2) 0.01000 0.01100 0.02600 0.00100 0.00500 -0.00100 OB(0) 0.01900 0.02600 0.02500 -0.00600 0.01400 -0.00300 OB(z) 0.01700 0.02500 0.02900 -0.00500 0.01400 0.00200 OC(0) 0.01900 0.01600 0.02300 -0.00600 0.00600 -0.00200 OC(z) 0.01600 0.01700 0.02800 -0.00800 0.00700 -0.00500 OD(0) 0.02000 0.03000 0.01500 0.00300 0.00200 0.00300 OD(z) 0.01500 0.02600 0.01400 0.00100 -0.00100 0.00200