Rhodium is used in reflectors.
Standard State: solid at 298 K
Color: Silvery white metallic
Wollaston discovered rhodium in 1803-1804 in crude platinum ore he presumably obtained
from South America. Rhodium occurs native with other platinum metals is river sands of the Urals and in
North and South America. It is also found with other platinum metals in the
copper-nickel sulfide ores of the Sudbury, Ontario Region. Although the quantity
occurring here is very small, the large tonnage of nickel processed make the recovery
commercially feasible. The annual world production of rhodium in is only 7 or 8
tons. Such alloys are used for furnace windings, thermocouple elements, bushings for glass
fiber production, electrodes for aircraft spark plugs, and laboratory crucibles.