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 = 400 C ; _database_code_amcsd 368 _chemical_formula_sum 'Si8 Mg5 Ca2 O24 H2' _cell_length_a 9.86 _cell_length_b 18.118 _cell_length_c 5.285 _cell_angle_alpha 90.0 _cell_angle_beta 104.57 _cell_angle_gamma 90.0 _cell_volume 913.768 _exptl_crystal_density_diffrn 2.953 _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 0.2798 0.0839 0.2955 Si2 0.2882 0.1707 0.8032 Mg1 0.0 0.0877 0.5 Mg2 0.0 0.177 0.0 Mg3 0.0 0.0 0.0 Ca4 0.0 0.2776 0.5 O1 0.1117 0.0862 0.2171 O2 0.119 0.1712 0.7235 O-H3 0.1104 0.0 0.7157 O4 0.3658 0.247 0.7951 O5 0.3451 0.1326 0.095 O6 0.3429 0.1192 0.5844 O7 0.3354 0.0 0.2946 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 0.01029 0.00815 0.0116 -0.00079 0.00346 -0.00033 Si2 0.00992 0.00915 0.01084 -0.00193 0.00391 -0.00061 Mg1 0.01439 0.01098 0.01405 0.0 0.00544 0.0 Mg2 0.01389 0.01064 0.01282 0.0 0.00593 0.0 Mg3 0.01416 0.00998 0.01341 0.0 0.00428 0.0 Ca4 0.02404 0.01463 0.02552 0.0 0.01672 0.0 O1 0.01153 0.01197 0.01601 -0.00026 0.00467 -0.00061 O2 0.01089 0.01447 0.01545 -0.00044 0.00378 -0.00085 O-H3 0.01776 0.01447 0.01666 0.0 0.00593 0.0 O4 0.02173 0.01281 0.02131 -0.00666 0.0092 -0.0016 O5 0.01541 0.01946 0.01345 -0.00061 0.00448 0.00502 O6 0.01689 0.01863 0.01382 0.0007 0.00504 -0.00451 O7 0.01707 0.00881 0.02823 0.0 0.00853 0.0