Polydymite Lundqvist D Arkiv for Mineralogi och Geologi 24 (1947) 1-12 X-ray studies on the binary system Ni-S Note: spinel structure Locality: synthetic _database_code_amcsd 0012049 9.457 9.457 9.457 90 90 90 Fd3m atom x y z Ni 0 0 0 Ni .625 .625 .625 S -.135 -.135 -.135