data_global _chemical_name_mineral 'Chlorite' loop_ _publ_author_name 'Zanazzi P F' 'Montagnoli M' 'Nazzareni S' 'Comodi P' _journal_name_full 'American Mineralogist' _journal_volume 92 _journal_year 2007 _journal_page_first 655 _journal_page_last 661 _publ_section_title ; Structural effects of pressure on monoclinic chlorite: a single-crystal study Sample: P = 0.0001 GPa ; _database_code_amcsd 0004284 _chemical_compound_source 'Alpe Raguzzolo, Val Malenco, Italy' _chemical_formula_sum 'Mg2.292 Fe.255 Al.865 Si1.588 O9 H4' _cell_length_a 5.3363 _cell_length_b 9.240 _cell_length_c 14.37 _cell_angle_alpha 90 _cell_angle_beta 96.93 _cell_angle_gamma 90 _cell_volume 703.371 _exptl_crystal_density_diffrn 2.700 _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 MgM1 0.00000 0.00000 0.00000 0.76400 0.00730 FeM1 0.00000 0.00000 0.00000 0.08500 0.00730 AlM1 0.00000 0.00000 0.00000 0.15100 0.00730 MgM2 0.00000 0.33269 0.00000 0.76400 0.00740 FeM2 0.00000 0.33269 0.00000 0.08500 0.00740 AlM2 0.00000 0.33269 0.00000 0.15100 0.00740 MgM3 0.00000 0.16654 0.50000 0.76400 0.00760 FeM3 0.00000 0.16654 0.50000 0.08500 0.00760 AlM3 0.00000 0.16654 0.50000 0.15100 0.00760 MgM4 0.00000 0.50000 0.50000 0.76400 0.00640 FeM4 0.00000 0.50000 0.50000 0.08500 0.00640 AlM4 0.00000 0.50000 0.50000 0.15100 0.00640 SiT 0.22844 0.16673 0.19152 0.79400 0.00740 AlT 0.22844 0.16673 0.19152 0.20600 0.00740 O1 0.19140 0.16660 0.07678 1.00000 0.00870 O2 0.21000 0.00000 0.23280 1.00000 0.01630 O3 0.50700 0.23440 0.23270 1.00000 0.01610 O-H1 0.19010 0.50000 0.07340 1.00000 0.00990 O-H2 0.15170 0.00000 0.43070 1.00000 0.01510 O-H3 0.14070 0.33680 0.43040 1.00000 0.01600