data_global _chemical_name_mineral 'Dmitryivanovite' loop_ _publ_author_name 'Lazic B' 'Kahlenberg V' 'Konzett J' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 222 _journal_year 2007 _journal_page_first 690 _journal_page_last 695 _publ_section_title ; Structural studies on a stuffed framework high pressure polymorph of CaAl2O4 ; _database_code_amcsd 0011130 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Ca Al2 O4' _cell_length_a 7.97187 _cell_length_b 8.62844 _cell_length_c 10.26276 _cell_angle_alpha 90 _cell_angle_beta 94.801 _cell_angle_gamma 90 _cell_volume 703.445 _exptl_crystal_density_diffrn 2.985 _symmetry_space_group_name_H-M 'P 1 21/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,1/2+y,1/2-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Ca1 0.53370 0.24310 0.35350 0.00215 Ca2 -0.00510 0.21540 0.37310 0.00215 Al1 0.29370 0.39470 0.11840 0.00253 Al2 0.69510 0.40480 0.10910 0.00253 Al3 0.82210 0.55660 0.36120 0.00253 Al4 0.22360 0.56050 0.36660 0.00253 O1 0.34920 0.43410 0.28260 0.01051 O2 0.73260 0.42580 0.46540 0.01051 O3 0.15290 0.24430 0.07320 0.01051 O4 0.48860 0.34090 0.06770 0.01051 O5 0.21840 0.56270 0.03830 0.01051 O6 0.71530 0.57450 0.20500 0.01051 O7 0.76750 0.24410 0.20510 0.01051 O8 0.02220 0.48510 0.33050 0.01051