data_global _chemical_name_mineral 'Clinochlore' loop_ _publ_author_name 'Phillips T L' 'Loveless J K' 'Bailey S W' _journal_name_full 'American Mineralogist' _journal_volume 65 _journal_year 1980 _journal_page_first 112 _journal_page_last 122 _publ_section_title ; Cr3+ coordination in chlorites: a structural study of ten chromian chlorites Day Book Body, N. C. ; _database_code_amcsd 0000770 _chemical_formula_sum 'Mg5 Al1.67 Cr.28 Si3.04 O18 H8' _cell_length_a 5.327 _cell_length_b 9.227 _cell_length_c 14.356 _cell_angle_alpha 90.45 _cell_angle_beta 97.35 _cell_angle_gamma 89.98 _cell_volume 699.810 _exptl_crystal_density_diffrn 2.670 _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 Mg1 0.00000 0.00000 0.00000 1.00000 ? Mg2 0.00150 0.33360 -0.00010 1.00000 ? Mg3 -0.00080 0.16670 0.49990 1.00000 ? Al1 0.00000 0.50000 0.50000 0.71000 ? Cr1 0.00000 0.50000 0.50000 0.28000 ? Si1 0.23280 0.16880 0.19200 0.76000 ? Al1 0.23280 0.16880 0.19200 0.24000 ? Si2 0.73320 0.00220 0.19190 0.76000 ? Al2 0.73320 0.00220 0.19190 0.24000 ? O-h1 0.69150 0.33380 0.07270 1.00000 ? O-h2 0.15820 -0.00090 0.43050 1.00000 ? O-h3 0.13490 0.33960 0.43030 1.00000 ? O-h4 0.63510 0.15820 0.43080 1.00000 ? O1 0.19350 0.16730 0.07690 1.00000 ? O2 0.69380 0.00110 0.07670 1.00000 ? O3 0.21070 0.33640 0.23330 1.00000 ? O4 0.51510 0.10450 0.23340 1.00000 ? O5 0.01480 0.06740 0.23300 1.00000 ? H1 0.68700 0.34300 0.14200 1.00000 0.01900 H2 0.12700 0.01200 0.37100 1.00000 0.01900 H3 0.12900 0.35100 0.36700 1.00000 0.01900 H4 0.60800 0.15700 0.36800 1.00000 0.01900 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 Mg1 0.01287 0.01811 0.02978 -0.00099 0.00267 0.00133 Mg2 0.01259 0.01768 0.03060 -0.00148 0.00229 0.00080 Mg3 0.01541 0.01855 0.03409 -0.00198 0.00229 0.00120 Al1 0.00806 0.00992 0.02300 -0.00198 0.00191 0.00133 Cr1 0.00806 0.00992 0.02300 -0.00198 0.00191 0.00133 Si1 0.00566 0.00819 0.02198 -0.00173 0.00152 0.00106 Al1 0.00566 0.00819 0.02198 -0.00173 0.00152 0.00106 Si2 0.00523 0.00863 0.02208 -0.00123 0.00114 0.00120 Al2 0.00523 0.00863 0.02208 -0.00123 0.00114 0.00120 O-h1 0.00848 0.01423 0.02362 -0.00049 0.00152 0.00200 O-h2 0.01555 0.01811 0.02259 -0.00272 0.00038 0.00133 O-h3 0.01697 0.01811 0.02259 -0.00198 0.00191 0.00266 O-h4 0.01273 0.01639 0.02259 -0.00074 -0.00076 0.00067 O1 0.00707 0.01251 0.02465 -0.00198 0.00229 0.00266 O2 0.00848 0.01078 0.02362 -0.00222 0.00191 0.00000 O3 0.01838 0.01725 0.02670 -0.00321 0.00152 0.00200 O4 0.01414 0.01725 0.03081 -0.00025 0.00114 -0.00133 O5 0.01273 0.02243 0.03081 -0.00420 0.00114 0.00466