data_global _chemical_name_mineral 'Diopside' loop_ _publ_author_name 'Kabalov Y K' 'Oeckler O' 'Sokolova E V' 'Mironov A B' 'Chesnokov B V' _journal_name_full 'European Journal of Mineralogy' _journal_volume 9 _journal_year 1997 _journal_page_first 617 _journal_page_last 621 _publ_section_title ; Subsilicic ferrian aluminian diopside from the Chelyabinsk coal basin (Southern Urals) - an unusual clinopyroxene ; _database_code_amcsd 0006695 _chemical_compound_source 'Chelyabinsk coal basin, Southern Urals' _chemical_formula_sum 'Fe.51 Al.6 Mg.44 Ca.96 Si1.4 O6' _cell_length_a 9.786 _cell_length_b 8.860 _cell_length_c 5.338 _cell_angle_alpha 90 _cell_angle_beta 105.87 _cell_angle_gamma 90 _cell_volume 445.185 _exptl_crystal_density_diffrn 3.419 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-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 FeM1 0.00000 0.09600 0.75000 0.35000 0.01267 AlM1 0.00000 0.09600 0.75000 0.20000 0.01267 MgM1 0.00000 0.09600 0.75000 0.44000 0.01267 CaM2 0.00000 0.69700 0.75000 0.96000 0.01013 FeT 0.21100 0.40800 0.77400 0.08000 0.01267 SiT 0.21100 0.40800 0.77400 0.70000 0.01267 AlT 0.21100 0.40800 0.77400 0.20000 0.01267 O1 0.39600 0.41200 0.86500 1.00000 0.01520 O2 0.14400 0.24200 0.64800 1.00000 0.01140 O3 0.14800 0.48100 0.02000 1.00000 0.00507