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 = 330 C ; _database_code_amcsd 0002654 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Sr (Al1.9 Si2.1) O8' _cell_length_a 8.399 _cell_length_b 12.963 _cell_length_c 14.266 _cell_angle_alpha 90 _cell_angle_beta 115.39 _cell_angle_gamma 90 _cell_volume 1403.202 _exptl_crystal_density_diffrn 3.085 _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 0.27220 -0.00160 0.06580 1.00000 0.03500 AlT1(0) 0.00720 0.17590 0.10860 0.19000 0.01500 SiT1(0) 0.00720 0.17590 0.10860 0.81000 0.01500 AlT1(z) 0.00360 0.17850 0.61620 0.81000 0.01500 SiT1(z) 0.00360 0.17850 0.61620 0.19000 0.01500 AlT2(0) 0.69610 0.12070 0.17110 0.76000 0.01400 SiT2(0) 0.69610 0.12070 0.17110 0.24000 0.01400 AlT2(z) 0.68770 0.11360 0.67220 0.14000 0.01400 SiT2(z) 0.68770 0.11360 0.67220 0.86000 0.01400 OA(1) 0.00490 0.13030 0.00080 1.00000 0.02400 OA(2) 0.59550 -0.00030 0.14320 1.00000 0.02300 OB(0) 0.82820 0.12780 0.10700 1.00000 0.02900 OB(z) 0.81070 0.12840 0.61170 1.00000 0.03200 OC(0) 0.01360 0.29900 0.11840 1.00000 0.02800 OC(z) 0.02040 0.31020 0.63120 1.00000 0.02800 OD(0) 0.18560 0.12590 0.19600 1.00000 0.03200 OD(z) 0.19590 0.11960 0.70330 1.00000 0.02900 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 0.01600 0.04600 0.03700 0.00000 0.00500 -0.00300 AlT1(0) 0.01400 0.01800 0.01300 -0.00400 0.00600 -0.00100 SiT1(0) 0.01400 0.01800 0.01300 -0.00400 0.00600 -0.00100 AlT1(z) 0.01400 0.01700 0.01300 -0.00400 0.00600 -0.00100 SiT1(z) 0.01400 0.01700 0.01300 -0.00400 0.00600 -0.00100 AlT2(0) 0.01200 0.01400 0.01600 -0.00100 0.00400 0.00000 SiT2(0) 0.01200 0.01400 0.01600 -0.00100 0.00400 0.00000 AlT2(z) 0.01100 0.01400 0.01600 -0.00200 0.00400 -0.00100 SiT2(z) 0.01100 0.01400 0.01600 -0.00200 0.00400 -0.00100 OA(1) 0.03000 0.02900 0.01300 -0.00400 0.01100 -0.00300 OA(2) 0.01300 0.01400 0.03600 -0.00100 0.00500 -0.00200 OB(0) 0.02500 0.03500 0.03400 -0.01000 0.01800 -0.00300 OB(z) 0.02500 0.03600 0.04200 -0.00700 0.02100 0.00200 OC(0) 0.02400 0.02200 0.03100 -0.00700 0.00600 -0.00400 OC(z) 0.02200 0.01900 0.03600 -0.01000 0.00700 -0.00600 OD(0) 0.02700 0.04100 0.02000 0.00500 0.00300 0.00700 OD(z) 0.02300 0.03300 0.02100 0.00200 0.00000 0.00200