data_global _chemical_name_mineral 'Carminite' loop_ _publ_author_name 'Olmi F' 'Sabelli C' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte' _journal_volume 1995 _journal_year 1995 _journal_page_first 553 _journal_page_last 562 _publ_section_title ; Carminite from three localities of Sardinia (Italy). Crystal structure refinements Sample C ; _database_code_amcsd 0014877 _chemical_compound_source 'Pira Inferida Mine, Sardinia, Italy' _chemical_formula_sum 'Pb Fe2 As2 O10 H2' _cell_length_a 16.602 _cell_length_b 7.586 _cell_length_c 12.268 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1545.066 _exptl_crystal_density_diffrn 5.423 _symmetry_space_group_name_H-M 'C c c m' 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,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' '-x,-y,z' '1/2-x,1/2-y,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 Pb1 0.00000 0.00000 0.25000 0.01748 Pb2 0.25000 0.75000 0.00000 0.01292 Fe 0.12280 0.36910 0.13440 0.01279 As1 0.04270 0.73820 0.00000 0.00861 As2 0.21160 0.00000 0.25000 0.00722 O1 0.01720 0.24750 0.10930 0.01279 O2 0.09390 0.53970 0.00000 0.00988 O3 0.11050 -0.10330 0.00000 0.01849 O4 0.15070 0.17590 0.24180 0.01381 O5 0.27060 -0.00230 0.13730 0.01051 O-H1 0.16800 0.23880 0.00000 0.00874 O-H2 0.07750 0.50000 0.25000 0.00697