data_global _chemical_name_mineral 'Rhonite' loop_ _publ_author_name 'Bonaccorsi E' 'Merlino S' 'Pasero M' _journal_name_full 'European Journal of Mineralogy' _journal_volume 2 _journal_year 1990 _journal_page_first 203 _journal_page_last 218 _publ_section_title ; Rhonite: structural and microstructural features, crystal chemistry and polysomatic relationships ; _database_code_amcsd 0006383 _chemical_compound_source 'the Allende meteorite' _chemical_formula_sum '(Mg2 Ti) Ca Si Al2 O10' _cell_length_a 10.367 _cell_length_b 10.756 _cell_length_c 8.895 _cell_angle_alpha 105.98 _cell_angle_beta 96.04 _cell_angle_gamma 124.72 _cell_volume 739.406 _exptl_crystal_density_diffrn 3.401 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-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 0.50000 0.52000 0.01350 TiM1 0.00000 0.00000 0.50000 0.48000 0.01350 MgM2 0.00000 0.50000 0.00000 0.48000 0.01050 TiM2 0.00000 0.50000 0.00000 0.52000 0.01050 MgM3 0.31000 0.85070 0.17070 0.56000 0.01150 TiM3 0.31000 0.85070 0.17070 0.44000 0.01150 MgM4 0.77940 0.82860 0.14920 0.58000 0.01190 TiM4 0.77940 0.82860 0.14920 0.42000 0.01190 MgM5 0.09730 0.94310 0.05370 0.90000 0.01430 TiM5 0.09730 0.94310 0.05370 0.10000 0.01430 MgM6 0.59680 0.94530 0.05900 0.90000 0.00660 TiM6 0.59680 0.94530 0.05900 0.10000 0.00660 MgM7 0.99780 0.74620 0.25490 0.56000 0.00700 TiM7 0.99780 0.74620 0.25490 0.44000 0.00700 CaM8 0.20440 0.62680 0.39420 1.00000 0.00770 CaM9 0.66170 0.60650 0.37430 1.00000 0.00900 SiT1 0.47060 0.23150 0.33370 0.50000 0.00870 AlT1 0.47060 0.23150 0.33370 0.50000 0.00870 SiT2 0.97390 0.22930 0.34560 0.50000 0.00570 AlT2 0.97390 0.22930 0.34560 0.50000 0.00570 SiT3 0.78390 0.34150 0.23390 0.50000 0.00710 AlT3 0.78390 0.34150 0.23390 0.50000 0.00710 SiT4 0.27020 0.33870 0.22440 0.50000 0.00610 AlT4 0.27020 0.33870 0.22440 0.50000 0.00610 AlT5 0.64260 0.94680 0.43540 1.00000 0.01010 AlT6 0.36340 0.56530 0.05040 1.00000 0.01020 O1 0.34250 0.05300 0.15960 1.00000 0.01070 O2 0.84370 0.05500 0.16930 1.00000 0.00960 O3 0.54790 0.96090 0.27940 1.00000 0.01500 O4 0.01750 0.93760 0.26970 1.00000 0.01190 O5 0.24230 0.86740 0.38670 1.00000 0.01840 O6 0.75810 0.87890 0.37830 1.00000 0.01410 O7 0.50450 0.20230 0.50900 1.00000 0.01440 O8 0.95980 0.78980 0.48570 1.00000 0.01290 O9 0.88540 0.32170 0.37880 1.00000 0.00920 O10 0.39010 0.33420 0.36510 1.00000 0.00760 O11 0.64760 0.16270 0.05450 1.00000 0.01230 O12 0.14890 0.16390 0.05340 1.00000 0.00740 O13 0.54460 0.72140 0.03820 1.00000 0.01970 O14 0.06750 0.72940 0.06050 1.00000 0.01000 O15 0.24140 0.62070 0.11780 1.00000 0.01240 O16 0.74720 0.61540 0.13690 1.00000 0.01380 O17 0.40920 0.50890 0.19830 1.00000 0.01120 O18 0.94400 0.51320 0.21050 1.00000 0.01530 O19 0.15280 0.36840 0.31820 1.00000 0.01100 O20 0.66740 0.37690 0.33470 1.00000 0.00950