data_global
_chemical_name_mineral 'Ericlaxmanite'
loop_
_publ_author_name
'Pekov I V'
'Zubkova N V'
'Yapaskurt V O'
'Belakovskiy D I'
'Vigasina M F'
'Sidorov E G'
'Pushcharovsky D Y'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 78 
_journal_year 2014
_journal_page_first 1553
_journal_page_last 1569
_publ_section_title
;
 New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano,
 Kamchatka, Russia. II. Ericlaxmanite and kozyrevskite, two natural
 modifications of Cu4O(AsO4)2
;
_database_code_amcsd 0020530
_chemical_compound_source 'Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia'
_chemical_formula_sum 'Cu4 As2 O9'
_cell_length_a 6.4271
_cell_length_b 7.6585
_cell_length_c 8.2249
_cell_angle_alpha 98.396
_cell_angle_beta 112.420
_cell_angle_gamma 98.397
_cell_volume 361.114
_exptl_crystal_density_diffrn      5.040
_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
Cu1   0.34652   0.84130   0.54832   1.00000   0.01140
Cu2   0.38040   0.61030   0.25400   0.91500   0.01330
Cu2’   0.28800   0.56400   0.18600   0.08500   0.01800
Cu3   0.09419   0.35782   0.73392   1.00000   0.01450
Cu4   0.14634   0.87928   0.08430   1.00000   0.01299
As1   0.13069   0.22820   0.35367   1.00000   0.00938
As2   0.50259   0.28742   0.08946   1.00000   0.00920
O1   0.62630   0.48560   0.25160   1.00000   0.01120
O2  -0.00320   0.06990   0.15830   1.00000   0.01180
O3   0.19410   0.77220   0.28770   1.00000   0.01040
O4   0.23370   0.30900  -0.02750   1.00000   0.01460
O5   0.34200   0.72070   0.03560   1.00000   0.01430
O6   0.50090   0.88580   0.80900   1.00000   0.01370
O7   0.17390   0.43470   0.31610   1.00000   0.01840
O8   0.37330   0.17300   0.49010   1.00000   0.01560
O9  -0.03190   0.22720   0.47270   1.00000   0.01390