data_9009621 _chemical_name 'Mammothite' loop_ _publ_author_name 'Effenberger H' _journal_name_full "Tschermaks Mineralogische und Petrographische Mitteilungen" _journal_volume 34 _journal_year 1985 _journal_page_first 279 _journal_page_last 288 _publ_section_title ; The crystal structure of mammothite, Pb6Cu4AlSbO2(OH)16Cl4(SO4)2 Locality: Mammoth vein, Tiger, Arizona, USA ; _chemical_formula_sum 'Pb6 Cu4 Al Sb O26 Cl4 S2 H16' _cell_length_a 18.93 _cell_length_b 7.33 _cell_length_c 11.35 _cell_angle_alpha 90 _cell_angle_beta 112.44 _cell_angle_gamma 90 _cell_volume 1455.640 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _symmetry_equiv_pos_as_xyz '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' '-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_Uiso_or_equiv Pb1 0.21037 0.00000 0.17947 0.01790 Pb2 0.42277 0.25855 0.20296 0.01890 Cu1 0.25000 0.25000 0.50000 0.01550 Cu2 0.10420 0.00000 0.36850 0.01510 Al 0.00000 0.00000 0.50000 0.00900 Sb 0.00000 0.00000 0.00000 0.01430 O 0.00210 0.00000 -0.16950 0.01500 O-H1 0.23860 0.00000 -0.43930 0.01900 O-H2 0.08720 0.00000 -0.34420 0.01700 O-H3 0.08310 0.18540 0.04260 0.01900 O-H4 0.04090 0.17170 0.41730 0.01600 O-H5 0.16950 0.18330 0.33980 0.01400 Cl1 0.36790 0.00000 0.39630 0.03000 Cl2 0.44910 0.00000 -0.19950 0.02300 S1 0.24970 0.00000 -0.09530 0.01500 OS1 0.17760 0.00000 -0.07090 0.02000 OS2 0.31030 0.00000 0.02980 0.03600 OS3 0.24820 0.15960 -0.16860 0.03400