data_global _chemical_name_mineral 'Chromschieffelinite' loop_ _publ_author_name 'Kampf A R' 'Mills S J' 'Housley R M' 'Rumsey M S' 'Spratt J' _journal_name_full 'American Mineralogist' _journal_volume 97 _journal_year 2012 _journal_page_first 212 _journal_page_last 219 _publ_section_title ; Lead-tellurium oxysalts from Otto Mountain near Baker, California: VII. Chromschieffelinite, Pb10Te6O20(OH)14(CrO4)(H2O)5, the chromate analog of schieffelinite ; _database_code_amcsd 0018766 _chemical_compound_source 'Otto Mountain near Baker, California, USA' _chemical_formula_sum 'Pb5 Te3 Cr.5 O21.5 H12' _cell_length_a 9.6646 _cell_length_b 19.4962 _cell_length_c 10.5101 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1980.345 _exptl_crystal_density_diffrn 6.040 _symmetry_space_group_name_H-M 'C 2 2 21' 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,-z' '1/2+x,1/2-y,-z' '-x,-y,1/2+z' '1/2-x,1/2-y,1/2+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 Pb1 0.50000 0.73669 0.25000 1.00000 0.02636 Pb2 0.85091 0.65778 0.37381 1.00000 0.02338 Pb3 0.78519 0.84795 0.49042 1.00000 0.03141 Te1 0.50000 0.55833 0.25000 1.00000 0.01490 Te2 0.84797 0.79074 0.15086 1.00000 0.01206 Cr 0.05840 0.50300 0.45550 0.25000 0.05000 O1 0.62860 0.62710 0.20770 1.00000 0.01700 O-H2 0.57070 0.55440 0.42280 1.00000 0.02800 O-H3 0.37280 0.48600 0.29980 1.00000 0.03400 O4 0.91610 0.69990 0.13060 1.00000 0.01810 O5 0.81500 0.73360 0.55980 1.00000 0.01520 O6 0.76550 0.76400 0.30880 1.00000 0.01370 O7 0.55790 0.68180 0.49780 0.50000 0.02300 O-H7 0.55790 0.68180 0.49780 0.50000 0.02300 O8 0.00000 0.82720 0.25000 1.00000 0.02100 O-H9 0.76670 0.88200 0.16330 1.00000 0.02040 O10 0.22100 0.50000 0.50000 0.50000 0.07200 O11 0.51600 0.93250 0.05000 0.50000 0.13000 O12 0.05400 0.53800 0.31300 0.25000 0.03300 Wat1 -0.13900 0.50000 0.50000 0.50000 0.14000 Wat2 0.48000 0.88030 0.17600 0.50000 0.07800 Wat3 0.12400 0.53200 0.38600 0.50000 0.10200 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 Pb1 0.02100 0.01880 0.03930 0.00000 0.00480 0.00000 Pb2 0.01880 0.02000 0.03140 -0.00100 0.00480 0.00180 Pb3 0.05510 0.01890 0.02020 -0.00620 -0.01020 0.00370 Te1 0.01830 0.01340 0.01310 0.00000 -0.00050 0.00000 Te2 0.00960 0.01390 0.01270 -0.00050 -0.00150 0.00030 O1 0.02000 0.01100 0.02000 0.00600 0.00300 0.00000 O-H2 0.03200 0.02900 0.02300 -0.00300 -0.01000 -0.00200 O-H3 0.05300 0.01300 0.03600 -0.01400 -0.00100 -0.00200 O4 0.01000 0.01400 0.03000 0.00500 -0.00100 0.00400 O5 0.02600 0.00500 0.01400 0.00300 0.00800 0.00300 O6 0.01000 0.02000 0.01100 0.00000 0.00400 0.00400 O7 0.02300 0.02300 0.02200 -0.00200 -0.01100 -0.00200 O-H7 0.02300 0.02300 0.02200 -0.00200 -0.01100 -0.00200 O8 0.00800 0.02100 0.03300 0.00000 -0.01100 0.00000 O-H9 0.01600 0.02200 0.02300 0.00300 -0.00400 0.00400