data_global _chemical_name_mineral 'Liebauite' loop_ _publ_author_name 'Zoller M H' 'Tillmanns E' 'Hentschel G' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 200 _journal_year 1992 _journal_page_first 115 _journal_page_last 126 _publ_section_title ; Liebauite, Ca3Cu5Si9O26: A new silicate mineral with 14er single chain ; _database_code_amcsd 0011017 _chemical_compound_source 'Sattelberg scoria cone, Kruft, Eifel district, Germany' _chemical_formula_sum 'Ca3 Cu5 Si9 O26' _cell_length_a 10.160 _cell_length_b 10.001 _cell_length_c 19.9730 _cell_angle_alpha 90 _cell_angle_beta 91.56 _cell_angle_gamma 90 _cell_volume 2028.708 _exptl_crystal_density_diffrn 3.623 _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_U_iso_or_equiv Ca1 0.50000 0.22510 0.25000 0.00367 Ca2 0.97250 0.26410 0.42970 0.00608 Cu1 0.25000 0.25000 0.50000 0.00773 Cu2 0.23120 0.25810 0.33910 0.00760 Cu3 0.97040 0.01050 0.32840 0.00709 Si1 0.99670 0.75450 0.41170 0.00532 Si2 0.19870 0.54510 0.40660 0.00570 Si3 0.22750 0.53480 0.69600 0.00709 Si4 0.00000 0.72000 0.75000 0.00595 Si5 0.28540 0.53480 0.55110 0.00317 O1 0.09020 0.64690 0.37210 0.01077 O2 0.91350 0.82930 0.35260 0.00621 O3 0.95830 0.80670 0.68420 0.00304 O4 0.91410 0.68540 0.46720 0.00950 O5 0.18860 0.38300 0.70890 0.00697 O6 0.15700 0.39190 0.39540 0.00823 O7 0.37860 0.57160 0.71610 0.00836 O8 0.18890 0.57680 0.48820 0.00304 O9 0.19570 0.57690 0.61590 0.00646 O10 0.12860 0.62770 0.73860 0.00747 O11 0.34200 0.38610 0.55470 0.00481 O12 0.59470 0.35960 0.45160 0.00887 O13 0.15720 0.08970 0.11510 0.01140