👉 Tylerite is a mineral compound that is commonly found in the Earth's crust. It is composed of iron and oxygen, and it has a high density and a hardness that makes it resistant to crushing under pressure. Tyrellite was first discovered by French chemist Jean-Michel Dupont in 1862 during his work on the development of the French chemical industry. The mineral compound is named after its inventor, Eugène de Théry, who described it as "the most