Pararammelsbergite Stassen W N, Heyding R D Canadian Journal of Chemistry 46 (1968) 2159-2163 Crystal structures of RuSe2, OsSe2, PtAs2, and alpha-NiAs2 Locality: synthetic _database_code_amcsd 0012153 5.770 5.838 11.419 90 90 90 Pbca atom x y z Ni .020 .823 .135 As1 .865 .194 .069 As2 .123 .447 .182