data_global _chemical_name_mineral 'Arsenoclasite' loop_ _publ_author_name 'Moore P B' 'Molin-Case J' _journal_name_full 'American Mineralogist' _journal_volume 56 _journal_year 1971 _journal_page_first 1539 _journal_page_last 1552 _publ_section_title ; Crystal chemistry of the basic manganese arsenates: V. Mixed manganese coordination in the atomic arrangement of arsenoclasite ; _database_code_amcsd 0000259 _chemical_formula_sum 'Mn5 As2 (O12 H4)' _cell_length_a 18.29 _cell_length_b 5.75 _cell_length_c 9.31 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 979.109 _exptl_crystal_density_diffrn 4.210 _symmetry_space_group_name_H-M 'P 21 21 21' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,1/2+y,1/2-z' '1/2+x,1/2-y,-z' '1/2-x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Mn1 0.43230 0.26970 0.75220 0.00823 Mn2 0.03030 0.05440 0.88860 0.00773 Mn3 0.22140 0.07120 0.85820 0.00747 Mn4 0.12410 0.55870 0.87960 0.00963 Mn5 0.31640 0.58040 0.00090 0.00899 As1 0.37440 0.11170 0.07190 0.00101 As2 0.12430 0.19280 0.18380 0.00013 O-H1 0.05190 0.73500 0.02150 0.01241 O-H2 0.20250 0.38440 0.73970 0.01216 O-H3 0.04120 0.36760 0.75690 0.01140 O-H4 0.21710 0.74610 -0.02820 0.01140 O5 0.14610 0.44410 0.26430 0.00785 O6 0.12790 0.23240 0.00120 0.01317 O7 0.17620 -0.02770 0.23320 0.01102 O8 0.03800 0.09800 0.22820 0.01267 O9 0.37550 0.11030 0.25080 0.01203 O10 0.29340 0.21870 0.02060 0.00874 O11 0.43420 0.30070 -0.00040 0.01102 O12 0.39160 0.84480 0.01550 0.01355