data_global
_chemical_name_mineral 'Ericlaxmanite'
loop_
_publ_author_name
'Staack M'
'Mueller Buschbaum H'
_journal_name_full 'Zeitschrift fur Naturforschung'
_journal_volume B51 
_journal_year 1996
_journal_page_first 1279
_journal_page_last 1282
_publ_section_title
;
 Zur Kenntnis des Kupfer-Oxid-Arsenats Cu4O(AsO4)2
;
_database_code_amcsd 0019952
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Cu4 As2 O9'
_cell_length_a 6.4148
_cell_length_b 7.6549
_cell_length_c 8.2241
_cell_angle_alpha 98.521
_cell_angle_beta 112.394
_cell_angle_gamma 98.378
_cell_volume 360.127
_exptl_crystal_density_diffrn      5.054
_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
Cu1   0.34622   0.84149   0.54876
Cu2   0.37911   0.61022   0.25341
Cu3   0.09417   0.35754   0.73365
Cu4   0.14436   0.87817   0.08385
As1   0.13134   0.22910   0.35354
As2   0.50233   0.28728   0.08881
O1   0.62551   0.48660   0.25107
O2  -0.00428   0.07120   0.15740
O3   0.19629   0.77428   0.28929
O4   0.23341   0.30778  -0.02809
O5   0.34208   0.72149   0.03546
O6   0.50029   0.88559   0.80860
O7   0.17530   0.43703   0.31633
O8   0.37331   0.17329   0.49011
O9  -0.03237   0.22833   0.47245
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
Cu1 0.00503 0.01059 0.00538 -0.00002 0.00159 0.00000
Cu2 0.01515 0.00952 0.01663 0.00739 0.01146 0.00595
Cu3 0.00690 0.01328 0.00641 -0.00480 0.00136 0.00043
Cu4 0.01380 0.00868 0.00661 0.00737 0.00546 0.00305
As1 0.00542 0.00383 0.00514 -0.00047 0.00240 -0.00113
As2 0.00605 0.00321 0.00522 0.00001 0.00240 -0.00017
O1 0.00720 0.00500 0.01030 -0.00070 0.00310 -0.00240
O2 0.00920 0.00490 0.00500 0.00210 0.00150 -0.00090
O3 0.00570 0.00610 0.00540 0.00040 0.00150 0.00070
O4 0.00750 0.01390 0.00990 0.00190 0.00200 0.00580
O5 0.01540 0.01050 0.01290 0.00750 0.01100 0.00520
O6 0.01170 0.00610 0.00810 -0.00110 0.00290 0.00190
O7 0.02390 0.00600 0.02110 -0.00070 0.01450 0.00340
O8 0.00750 0.01780 0.00810 0.00360 0.00120 -0.00010
O9 0.00660 0.01630 0.00880 -0.00110 0.00480 -0.00200