data_global
_chemical_name_mineral 'Markcooperite'
loop_
_publ_author_name
'Kampf A R'
'Mills S J'
'Housley R M'
'Marty J'
'Thorne B'
_journal_name_full 'American Mineralogist'
_journal_volume 95 
_journal_year 2010
_journal_page_first 1554
_journal_page_last 1559
_publ_section_title
;
 Lead-tellurium oxysalts from Otto Mountain near Baker, California: IV.
 Markcooperite, Pb(UO2)Te6+O6, the first natural uranyl tellurate
;
_database_code_amcsd 0017720
_chemical_compound_source 'Otto Mountain, Baker, California'
_chemical_formula_sum 'Pb2 U.75 Te1.25 O8'
_cell_length_a 5.722
_cell_length_b 7.7478
_cell_length_c 7.889
_cell_angle_alpha 90
_cell_angle_beta 90.833
_cell_angle_gamma 90
_cell_volume 349.705
_exptl_crystal_density_diffrn      8.361
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-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
Pb   0.49720   0.16890   0.69190   1.00000   0.05310
U1   0.00000   0.00000   0.00000   0.75000   0.03860
Te1   0.00000   0.00000   0.00000   0.25000   0.03860
Te2   0.00000   0.50000   0.00000   1.00000   0.03390
O1   0.69900  -0.06800  -0.06100   1.00000   0.05400
O2  -0.13700   0.23400   0.50500   1.00000   0.03800
O3   0.29500   0.08500   0.42900   1.00000   0.04500
O4  -0.11400   0.53200  -0.23700   1.00000   0.04000
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
Pb 0.04400 0.05100 0.06400 -0.00300 -0.00300 0.00200
U1 0.03500 0.03900 0.04200 0.00300 0.00300 0.00200
Te1 0.03500 0.03900 0.04200 0.00300 0.00300 0.00200
Te2 0.02900 0.03400 0.03900 -0.00300 -0.00100 0.00200
O1 0.05000 0.05000 0.07000 0.01000 -0.03000 0.01000
O2 0.06000 0.02000 0.03000 0.00000 -0.02000 0.00000
O3 0.02000 0.05000 0.06000 0.00000 0.00000 0.03000
O4 0.03000 0.02000 0.07000 0.00000 -0.01000 0.01000