data_global _chemical_name_mineral 'Krinovite' loop_ _publ_author_name 'Bonaccorsi E' 'Merlino S' 'Pasero M' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 187 _journal_year 1989 _journal_page_first 133 _journal_page_last 138 _publ_section_title ; The crystal structure of the meteoritic mineral krinovite, NaNaMg2CrSi3O10 ; _database_code_amcsd 0010992 _chemical_compound_source 'Wichita County, USA' _chemical_formula_sum 'Na (Mg1.9 Fe.1) Cr Si3 O10' _cell_length_a 10.238 _cell_length_b 10.642 _cell_length_c 8.770 _cell_angle_alpha 105.15 _cell_angle_beta 96.50 _cell_angle_gamma 125.15 _cell_volume 710.794 _exptl_crystal_density_diffrn 3.467 _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 NaM8 0.20930 0.63000 0.39010 1.00000 0.01260 NaM9 0.66050 0.61160 0.37370 1.00000 0.01180 MgM3 0.31320 0.85080 0.17870 0.92000 0.00490 FeM3 0.31320 0.85080 0.17870 0.08000 0.00490 MgM4 0.77160 0.82010 0.15000 0.94000 0.00670 FeM4 0.77160 0.82010 0.15000 0.06000 0.00670 MgM5 0.09330 0.93810 0.06000 0.96000 0.00490 FeM5 0.09330 0.93810 0.06000 0.04000 0.00490 MgM6 0.59570 0.94100 0.06150 0.98000 0.00390 FeM6 0.59570 0.94100 0.06150 0.02000 0.00390 CrM1 0.00000 0.00000 0.50000 1.00000 0.00630 CrM2 0.00000 0.50000 0.00000 1.00000 0.00710 CrM7 0.99430 0.73800 0.26290 1.00000 0.00520 SiT1 0.47590 0.23390 0.33340 1.00000 0.00300 SiT2 0.98200 0.22970 0.33990 1.00000 0.00210 SiT3 0.78770 0.33700 0.23690 1.00000 0.00280 SiT4 0.27700 0.33930 0.22360 1.00000 0.00470 SiT5 0.64750 0.94790 0.44080 1.00000 0.00400 SiT6 0.35550 0.56090 0.04530 1.00000 0.00380 O1 0.35420 0.06610 0.16650 1.00000 0.00620 O2 0.85410 0.06330 0.16930 1.00000 0.00230 O3 0.55550 0.95700 0.28920 1.00000 0.00400 O4 0.01800 0.93310 0.27510 1.00000 0.00420 O5 0.24110 0.87520 0.39420 1.00000 0.00510 O6 0.75760 0.88680 0.38750 1.00000 0.00320 O7 0.49570 0.19830 0.49970 1.00000 0.00540 O8 0.95820 0.78550 0.49170 1.00000 0.00360 O9 0.89280 0.31790 0.37290 1.00000 0.00550 O10 0.40420 0.33850 0.35530 1.00000 0.00800 O11 0.65720 0.16910 0.06650 1.00000 0.00590 O12 0.15440 0.16640 0.06140 1.00000 0.00440 O13 0.52970 0.71320 0.03380 1.00000 0.00360 O14 0.05900 0.72380 0.06710 1.00000 0.00310 O15 0.24360 0.61220 0.11030 1.00000 0.00400 O16 0.75010 0.60580 0.13190 1.00000 0.00400 O17 0.40120 0.50350 0.18990 1.00000 0.00540 O18 0.93640 0.50620 0.21470 1.00000 0.00560 O19 0.16230 0.36630 0.31800 1.00000 0.00590 O20 0.67080 0.36400 0.33390 1.00000 0.00600