data_global _chemical_name_mineral 'Clinochlore' loop_ _publ_author_name 'Welch M D' 'Marshall W G' _journal_name_full 'American Mineralogist' _journal_volume 86 _journal_year 2001 _journal_page_first 1380 _journal_page_last 1386 _publ_section_title ; High-pressure behaviour of clinochlore P = 4.65 GPa ; _database_code_amcsd 0002742 _chemical_formula_sum 'Mg5 Al2 Si3 O18 D8' _cell_length_a 5.243 _cell_length_b 9.068 _cell_length_c 14.117 _cell_angle_alpha 90 _cell_angle_beta 97.38 _cell_angle_gamma 90 _cell_volume 665.612 _exptl_crystal_density_diffrn 2.813 _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 Mg1 0.00000 0.00000 0.00000 1.00000 0.00700 Mg2 0.00000 0.35300 0.00000 1.00000 0.00700 Mg3 0.00000 0.17500 0.50000 1.00000 0.01500 Al4 0.00000 0.50000 0.50000 1.00000 0.01500 SiT 0.22800 0.15800 0.20100 0.75000 0.00600 AlT 0.22800 0.15800 0.20100 0.25000 0.00600 O1 0.19600 0.17400 0.08000 1.00000 0.00700 O2 0.20400 0.00000 0.22900 1.00000 0.01000 O3 0.53300 0.21000 0.23400 1.00000 0.03500 O4 0.17700 0.50000 0.06900 1.00000 0.00400 O5 0.17700 0.00000 0.43200 1.00000 0.00700 O6 0.13000 0.32400 0.43200 1.00000 0.02600 D1 0.19900 0.50000 0.15000 1.00000 0.07400 D2 0.09000 0.00000 0.37200 1.00000 0.03900 D3 0.06300 0.34400 0.35500 1.00000 0.09900