data_1010761
_chemical_name_systematic          'Nickel arsenide (1/2)'
_chemical_name_mineral             'Rammelsbergite'
_chemical_compound_source          'from Eisleben, Thurinqia, Germany'
_chemical_formula_structural       'Ni As2'
_chemical_formula_sum              'As2 Ni'
_publ_section_title
;
Roentgenographic observations on ore minerals
;
loop_
_publ_author_name
  'Peacock, M A'
  'Berry, L G'
_journal_name_full
;
University of Toronto Studies, Geological Series
;
_journal_coden_ASTM                UTSGAL
_journal_volume                    44
_journal_year                      1940
_journal_page_first                47
_journal_page_last                 69
_cell_length_a                     3.53(1)
_cell_length_b                     4.78(1)
_cell_length_c                     5.78(1)
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       97.5
_cell_formula_units_Z              2
_exptl_crystal_density_meas        6.97
_symmetry_space_group_name_H-M     'P m n n'
_symmetry_Int_Tables_number        58
_symmetry_cell_setting             orthorhombic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  'x,-y,-z'
  '1/2-x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '-x,y,z'
  '1/2+x,1/2+y,1/2-z'
  '1/2+x,1/2-y,1/2+z'