Barium was discovered early in the 1600’s by the shoemaker Vincentius Casciorolus. In the mountains of Bologna, Italy he acquired a silvery white mineral that when heated would glow in the dark for hours after heating. It was not until 1808 when Humphry Davy isolated Barium by electrolysis of Barium sulphate similar to his work with Strontium. Barium is not found naturally occurring in the earth’s crust instead existing in the ores barite and witherite. It is most commonly used in the production of superconductors and in x-ray imagining of the digestive system. It is a solid metal at room temperature with a melting point of 727°c and a boiling point of 1897°c.
Sir Humphrey Davy