data_global _chemical_name_mineral 'Clinochlore' loop_ _publ_author_name 'Zanazzi P F' 'Montagnoli M' 'Nazzareni S' 'Comodi P' _journal_name_full 'American Mineralogist' _journal_volume 91 _journal_year 2006 _journal_page_first 1871 _journal_page_last 1878 _publ_section_title ; Structural effects of pressure on chlorite: A single-crystal study Sample: P = 4.85 GPa ; _database_code_amcsd 0004254 _chemical_compound_source 'Alpe Reguzzolo, Val Malenco, Italy' _chemical_formula_sum '(Mg4.5 Fe.5) Al5 Si4 O18 H8' _cell_length_a 5.252 _cell_length_b 9.106 _cell_length_c 14.11 _cell_angle_alpha 90.1 _cell_angle_beta 97.3 _cell_angle_gamma 89.93 _cell_volume 669.336 _exptl_crystal_density_diffrn 3.377 _symmetry_space_group_name_H-M 'C -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' 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 0.90000 0.00500 FeM1 0.00000 0.00000 0.00000 0.10000 0.00500 MgM2 0.00000 0.33310 -0.00030 0.90000 0.00690 FeM2 0.00000 0.33310 -0.00030 0.10000 0.00690 MgM3 -0.00050 0.16710 0.49950 0.90000 0.00480 FeM3 -0.00050 0.16710 0.49950 0.10000 0.00480 AlM4 0.00000 0.50000 0.50000 1.00000 0.00400 Si1 0.23120 0.16770 0.19100 1.00000 0.00600 Al1 0.23120 0.16770 0.19100 1.00000 0.00600 Si2 0.73120 0.00070 0.19100 1.00000 0.00900 Al2 0.73120 0.00070 0.19100 1.00000 0.00900 O1 0.18900 0.16650 0.07700 1.00000 0.02000 O2 0.69500 0.00020 0.08200 1.00000 0.01500 O3 0.20000 0.33390 0.23500 1.00000 0.02000 O4 0.52200 0.10710 0.23900 1.00000 0.01800 O5 0.02100 0.06200 0.24000 1.00000 0.01700 O-H1 0.70000 0.33270 0.08700 1.00000 0.00600 O-H2 0.14200 -0.00050 0.41800 1.00000 0.01500 O-H3 0.13900 0.33380 0.42000 1.00000 0.01600 O-H4 0.64100 0.16610 0.42100 1.00000 0.01000