Sudburyite
Sudburyite is an IMA-recognized mineral species in the sulfide class, with the chemical formula PdSb.
It crystallizes in the hexagonal crystal system (space group P6_3mc). It is a member of the Nickeline structural group.
Key properties: specific gravity 9.37; Metallic. Anisotropism: Weak to moderate, in pale grayish yellow and dark grayish brown. R1 –R2: (400) 49.1–45.0 luster.
IMA symbol Sdb, IMA status: approved, named in 1973.
Occurs as tiny inclusions, commonly in cobaltite or maucherite, in mechanical concentrates of platinum-group minerals (Sudbury, Canada).
It is found associated with Cobaltite, maucherite, gersdorffite, breithauptite, chalcopyrite, nickeline, galena (Sudbury, Canada); pyrrhotite, pentlandite, chalcopyrite, violarite.
The name refers to the localities at Sudbury, Canada.