data_global _chemical_name_mineral 'Tremolite' loop_ _publ_author_name 'Sueno S' 'Cameron M' 'Papike J J' 'Prewitt C T' _journal_name_full 'American Mineralogist' _journal_volume 58 _journal_year 1973 _journal_page_first 649 _journal_page_last 664 _publ_section_title ; The high temperature crystal chemistry of tremolite T = 700 C ; _database_code_amcsd 369 _chemical_formula_sum 'Si8 Mg5 Ca2 O24 H2' _cell_length_a 9.898 _cell_length_b 18.19 _cell_length_c 5.296 _cell_angle_alpha 90.0 _cell_angle_beta 104.46 _cell_angle_gamma 90.0 _cell_volume 923.311 _exptl_crystal_density_diffrn 2.922 _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 Si1 0.2791 0.0837 0.2945 Si2 0.288 0.1702 0.8027 Mg1 0.0 0.0878 0.5 Mg2 0.0 0.1776 0.0 Mg3 0.0 0.0 0.0 Ca4 0.0 0.2778 0.5 O1 0.1118 0.0863 0.2175 O2 0.1198 0.1713 0.7235 O-H3 0.1106 0.0 0.7179 O4 0.3662 0.2461 0.7958 O5 0.3441 0.1316 0.0936 O6 0.342 0.1194 0.582 O7 0.3349 0.0 0.2957 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 Si1 0.01457 0.00939 0.01848 -0.00141 0.00787 -9e-05 Si2 0.01475 0.01157 0.01783 -0.00256 0.00852 -0.00066 Mg1 0.02164 0.01492 0.01915 0.0 0.01096 0.0 Mg2 0.0209 0.01391 0.02089 0.0 0.01103 0.0 Mg3 0.02364 0.01391 0.01537 0.0 0.00931 0.0 Ca4 0.03704 0.01877 0.04101 0.0 0.02821 0.0 O1 0.0182 0.01693 0.02292 -0.00053 0.00832 -0.00066 O2 0.01866 0.01894 0.0219 0.00071 0.00879 -0.00095 O-H3 0.03034 0.01693 0.02473 0.0 0.01457 0.0 O4 0.03211 0.01576 0.03332 -0.00848 0.01616 -0.00378 O5 0.02411 0.02598 0.02369 -0.00062 0.01078 0.00789 O6 0.02187 0.02632 0.02142 0.00159 0.00627 -0.00695 O7 0.02769 0.00754 0.04944 0.0 0.01292 0.0