data_global _chemical_name_mineral 'Mounanaite' loop_ _publ_author_name 'Krause W' 'Belendorff K' 'Bernhardt H J' 'McCammon C A' 'Effenberger H' 'Mikenda W' _journal_name_full 'European Journal of Mineralogy' _journal_volume 10 _journal_year 1998 _journal_page_first 179 _journal_page_last 206 _publ_section_title ; Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite, tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite ; _database_code_amcsd 0006710 _chemical_compound_source 'Mounana, Gaboon' _chemical_formula_sum 'Pb Fe2 V2 (O10 H2)' _cell_length_a 9.294 _cell_length_b 6.166 _cell_length_c 7.713 _cell_angle_alpha 90 _cell_angle_beta 115.57 _cell_angle_gamma 90 _cell_volume 398.717 _exptl_crystal_density_diffrn 4.854 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _space_group_symop_operation_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_U_iso_or_equiv PbMe1 0.00000 0.00000 0.00000 0.02280 FeMe2 0.25000 0.25000 0.50000 0.01900 VX 0.92280 0.50000 0.22560 0.01520 O-H1 0.33680 0.50000 0.41830 0.01773 O2 0.31850 0.00000 0.37220 0.02533 O3 0.04060 0.27290 0.26630 0.01773 O4 0.21250 0.50000 -0.00530 0.02153