Lu=LUTETIUM
Lutetium is a soft, silvery rare earth metal. This element does not occur free in nature. It's used primarily for catalysts in the petroleum industry.
Description: Lutetium is a soft metal and is the densest and hardest rare earth metal.
Where It's Used: Lutetium is very rare and high in price. When refined, it can be used in the petroleum cracking process. There are few other commercial applications.
