What is "laurite"

Laurite \Lau"rite\, n. [Etymol. uncertain.] (Min.) A rare sulphide of osmium and ruthenium found with platinum in Borneo and Oregon.

n. (context mineralogy English) A rare sulphide of osmium and ruthenium found with platinum in Borneo and Oregon, with the chemical formula rutheniumsulfur₂.

Laurite is an opaque black, metallic ruthenium sulfide mineral with formula: RuS. It crystallizes in the isometric system. It is in the pyrite structural group. Though rare, it occurs in many parts of the world.

Laurite has a Mohs hardness of 7.5 and a specific gravity of 6.43. It can contain osmium, rhodium, iridium, and iron substituting for the ruthenium.