data_global _chemical_name_mineral 'Braccoite' loop_ _publ_author_name 'Camara F' 'Bittarello E' 'Ciriotti M E' 'Nestola F' 'Radica F' 'Marchesini M' _journal_name_full 'Mineralogical Magazine' _journal_volume 79 _journal_year 2015 _journal_page_first 171 _journal_page_last 189 _publ_section_title ; As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: II. braccoite, NaMn5[Si5AsO17(OH)](OH), description and crystal structure ; _database_code_amcsd 0020722 _chemical_compound_source 'Valletta mine, Maira Valley, Piedmont, Italy' _chemical_formula_sum 'Na2.12 Mn9.56 Mg.38 Ca.02 V.32 Al.02 Si10.74 As.96 O38 H3.96 F.04' _cell_length_a 9.7354 _cell_length_b 9.9572 _cell_length_c 9.0657 _cell_angle_alpha 92.691 _cell_angle_beta 117.057 _cell_angle_gamma 105.323 _cell_volume 740.370 _exptl_crystal_density_diffrn 3.560 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Na1 0.50000 0.00000 0.50000 1.00000 0.03000 Na2 0.19120 0.53400 0.44320 0.56000 0.01510 Mn1 0.74388 0.97982 0.29542 0.98000 0.01168 Mg1 0.74388 0.97982 0.29542 0.01000 0.01168 Ca1 0.74388 0.97982 0.29542 0.01000 0.01168 Mn2 0.99723 0.21282 0.22004 0.94000 0.01045 Mg2 0.99723 0.21282 0.22004 0.06000 0.01045 Mn3 0.86298 0.88807 0.02950 0.88000 0.00981 Mg3 0.86298 0.88807 0.02950 0.10000 0.00981 V3 0.86298 0.88807 0.02950 0.01000 0.00981 Al3 0.86298 0.88807 0.02950 0.01000 0.00981 Mn4 0.57398 0.66844 0.09774 0.99000 0.00999 Mg4 0.57398 0.66844 0.09774 0.01000 0.00999 Mn5 0.71912 0.55370 0.85346 0.99000 0.01242 Mg5 0.71912 0.55370 0.85346 0.01000 0.01242 Si1 0.87449 0.27556 0.82439 1.00000 0.00920 Si2 0.03102 0.23894 0.60955 1.00000 0.00861 Si3 0.20746 0.54939 0.77372 1.00000 0.00943 Si4 0.47814 0.75745 0.73037 1.00000 0.00925 Si5 0.61959 0.07757 0.89560 1.00000 0.00829 Si6 0.60697 0.71401 0.48355 0.37000 0.00903 As6 0.60697 0.71401 0.48355 0.48000 0.00903 V6 0.60697 0.71401 0.48355 0.15000 0.00903 O1 0.70480 0.16540 0.79470 1.00000 0.01320 O2 0.88530 0.22670 0.65670 1.00000 0.01450 O3 0.11100 0.40940 0.62040 1.00000 0.01330 O4 0.30220 0.66920 0.70620 1.00000 0.01240 O5 0.49870 0.92650 0.75290 1.00000 0.01280 O6 0.46450 0.71140 0.54650 1.00000 0.01420 O7 0.85560 0.43310 0.82220 1.00000 0.01440 O8 0.96450 0.72480 0.00810 1.00000 0.01180 O9 0.95350 0.15320 0.42200 1.00000 0.01230 O10 0.82870 0.81300 0.24690 1.00000 0.01100 O11 0.08050 0.60580 0.80350 1.00000 0.01430 O12 0.66490 0.49180 0.05940 1.00000 0.01140 O13 0.37460 0.27650 0.11810 1.00000 0.01130 O14 0.49610 0.14800 0.91020 1.00000 0.01270 O15 0.24040 0.94900 0.93670 1.00000 0.01120 O16 0.68090 0.88070 0.47500 1.00000 0.01480 O17 0.51720 0.60420 0.29770 1.00000 0.01370 O18 0.25680 0.34690 0.36990 1.00000 0.01490 O19 0.08970 0.05020 0.17280 1.00000 0.01340 H7 0.93700 0.49300 0.82000 1.00000 0.01700 H19 0.17900 0.05000 0.27600 0.98000 0.01600 F19 0.17900 0.05000 0.27600 0.02000 0.01600 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Na1 0.04870 0.03800 0.02150 0.02800 0.02300 0.01750 Na2 0.02330 0.01300 0.00870 0.00320 0.00900 0.00230 Mn1 0.00980 0.01070 0.01280 0.00149 0.00516 0.00090 Mg1 0.00980 0.01070 0.01280 0.00149 0.00516 0.00090 Ca1 0.00980 0.01070 0.01280 0.00149 0.00516 0.00090 Mn2 0.01030 0.01070 0.01040 0.00265 0.00545 0.00342 Mg2 0.01030 0.01070 0.01040 0.00265 0.00545 0.00342 Mn3 0.00980 0.00930 0.01120 0.00304 0.00566 0.00310 Mg3 0.00980 0.00930 0.01120 0.00304 0.00566 0.00310 V3 0.00980 0.00930 0.01120 0.00304 0.00566 0.00310 Al3 0.00980 0.00930 0.01120 0.00304 0.00566 0.00310 Mn4 0.00930 0.00910 0.01110 0.00244 0.00485 0.00261 Mg4 0.00930 0.00910 0.01110 0.00244 0.00485 0.00261 Mn5 0.01250 0.01130 0.01530 0.00397 0.00813 0.00284 Mg5 0.01250 0.01130 0.01530 0.00397 0.00813 0.00284 Si1 0.00870 0.01020 0.01010 0.00310 0.00550 0.00400 Si2 0.00850 0.00920 0.00790 0.00250 0.00390 0.00270 Si3 0.00860 0.00880 0.01100 0.00210 0.00500 0.00390 Si4 0.00970 0.00900 0.00930 0.00250 0.00490 0.00380 Si5 0.00810 0.00910 0.00860 0.00290 0.00440 0.00380 Si6 0.00980 0.00979 0.00859 0.00275 0.00542 0.00280 As6 0.00980 0.00979 0.00859 0.00275 0.00542 0.00280 V6 0.00980 0.00979 0.00859 0.00275 0.00542 0.00280 O1 0.01070 0.01530 0.01420 0.00240 0.00720 0.00710 O2 0.01180 0.02200 0.01130 0.00530 0.00690 0.00430 O3 0.01590 0.01020 0.01040 0.00160 0.00490 0.00200 O4 0.01120 0.01310 0.01290 0.00200 0.00650 0.00520 O5 0.01380 0.00870 0.01210 0.00120 0.00450 0.00360 O6 0.01290 0.01990 0.00990 0.00370 0.00640 0.00320 O7 0.01340 0.01080 0.02140 0.00420 0.01010 0.00580 O8 0.01120 0.01320 0.01120 0.00560 0.00460 0.00340 O9 0.01370 0.01340 0.00870 0.00220 0.00560 0.00190 O10 0.01070 0.01210 0.00910 0.00400 0.00360 0.00230 O11 0.01480 0.01400 0.02000 0.00630 0.01200 0.00690 O12 0.01150 0.01140 0.01030 0.00350 0.00440 0.00380 O13 0.01280 0.01200 0.01030 0.00510 0.00590 0.00400 O14 0.01280 0.01400 0.01420 0.00620 0.00780 0.00470 O15 0.01150 0.01100 0.01040 0.00340 0.00480 0.00440 O16 0.01750 0.01300 0.01360 0.00310 0.00810 0.00480 O17 0.01420 0.01420 0.01050 0.00170 0.00600 0.00030 O18 0.01330 0.01590 0.01650 0.00680 0.00660 0.00690 O19 0.01250 0.01530 0.01120 0.00490 0.00440 0.00340