data_global _chemical_name_mineral 'Tremolite' loop_ _publ_author_name 'Oberti R' 'Ungaretti L' 'Cannillo E' 'Hawthorne F C' 'Memmi I' _journal_name_full 'European Journal of Mineralogy' _journal_volume 7 _journal_year 1995 _journal_page_first 1049 _journal_page_last 1063 _publ_section_title ; Temperature-dependent Al order-disorder in the tetrahedral double chain of C2/m amphiboles Sample: S(1) ; _database_code_amcsd 0006601 _chemical_formula_sum 'Na.15 K.04 Fe1.4 Mg3.65 Al.83 Ca1.67 Mn.03 Si7.38 H1.973 O23.973 F.027' _cell_length_a 9.810 _cell_length_b 18.091 _cell_length_c 5.294 _cell_angle_alpha 90 _cell_angle_beta 104.58 _cell_angle_gamma 90 _cell_volume 909.285 _exptl_crystal_density_diffrn 3.127 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,z' '1/2+x,1/2-y,z' '-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_occupancy _atom_site_U_iso_or_equiv NaA 0.00000 0.50000 0.00000 0.02200 0.02305 KA 0.00000 0.50000 0.00000 0.00800 0.02305 NaAm 0.02820 0.50000 0.05730 0.02200 0.03192 KAm 0.02820 0.50000 0.05730 0.00800 0.03192 NaA2 0.00000 0.48070 0.00000 0.02200 0.03166 KA2 0.00000 0.48070 0.00000 0.00800 0.03166 FeM1 0.00000 0.08860 0.50000 0.22000 0.00747 MgM1 0.00000 0.08860 0.50000 0.78000 0.00747 AlM2 0.00000 0.17710 0.00000 0.08000 0.00697 FeM2 0.00000 0.17710 0.00000 0.21000 0.00697 MgM2 0.00000 0.17710 0.00000 0.71000 0.00697 AlM3 0.00000 0.00000 0.00000 0.05000 0.00861 FeM3 0.00000 0.00000 0.00000 0.28000 0.00861 MgM3 0.00000 0.00000 0.00000 0.67000 0.00861 CaM4 0.00000 0.27780 0.50000 0.41750 0.01127 NaM4 0.00000 0.27780 0.50000 0.01000 0.01127 MnM4 0.00000 0.27780 0.50000 0.00750 0.01127 FeM4 0.00000 0.27780 0.50000 0.06500 0.01127 CaM4* 0.00000 0.25280 0.50000 0.41750 0.03141 NaM4* 0.00000 0.25280 0.50000 0.01000 0.03141 MnM4* 0.00000 0.25280 0.50000 0.00750 0.03141 FeM4* 0.00000 0.25280 0.50000 0.06500 0.03141 SiT1 0.28080 0.08460 0.29640 0.84500 0.00671 AlT1 0.28080 0.08460 0.29640 0.15500 0.00671 SiT2 0.29000 0.17150 0.80550 1.00000 0.00747 H 0.20130 0.00000 0.74590 0.98650 0.01013 O1 0.10990 0.08780 0.21490 1.00000 0.00975 O2 0.12020 0.17270 0.72790 1.00000 0.00874 O3 0.11040 0.00000 0.71320 0.98650 0.01064 F3 0.11040 0.00000 0.71320 0.01350 0.01064 O4 0.36720 0.24830 0.79010 1.00000 0.01216 O5 0.34760 0.13600 0.10020 1.00000 0.01330 O6 0.34370 0.11850 0.59190 1.00000 0.01229 O7 0.33680 0.00000 0.28780 1.00000 0.01381