data_global _chemical_name_mineral 'Vauquelinite' loop_ _publ_author_name 'Fanfani L' 'Zanazzi P F' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 126 _journal_year 1968 _journal_page_first 433 _journal_page_last 443 _publ_section_title ; The crystal structure of vauquelinite and the relationships to fornacite ; _database_code_amcsd 0010658 _chemical_compound_source 'Beresov, Ural Mountains, Russia' _chemical_formula_sum 'Pb2 Cu Cr P O9 H' _cell_length_a 13.754 _cell_length_b 5.806 _cell_length_c 9.563 _cell_angle_alpha 90 _cell_angle_beta 94.57 _cell_angle_gamma 90 _cell_volume 761.232 _exptl_crystal_density_diffrn 6.160 _symmetry_space_group_name_H-M 'P 1 21/n 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-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 Pb1 0.73630 0.22560 0.49540 0.03787 Pb2 0.05350 0.76860 0.16660 0.02812 Cu1 0.00000 0.00000 0.50000 0.03749 Cu2 0.00000 0.50000 0.50000 0.01684 Cr 0.86200 0.26250 0.18110 0.02140 P 0.15840 0.27370 0.32070 0.02318 O1 0.12030 0.04780 0.38060 0.03964 O2 0.11040 0.47800 0.38680 0.04116 O3 0.11920 0.25890 0.16790 0.03204 O4 0.26830 0.29510 0.34700 0.03166 O5 0.89100 0.02810 0.10130 0.03204 O6 0.91030 0.48360 0.09640 0.02508 O7 0.91130 0.23600 0.33810 0.02419 O8 0.74700 0.27350 0.18380 0.02938 O-H 0.95290 0.78370 0.38410 0.02799