Sperrylite 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 0012151 5.9665 5.9665 5.9665 90 90 90 Pa3 atom x y z Pt 0 0 0 As .383 .383 .383