Vanadium Ore

a ductile metallic element, vanadium was discovered in 1803 by andres del rio, rediscovered in 1831 by nils selstrom, and isolated by henry roscoe in 1867. It has an abundance of 0. 015% in the earth\\\'s crust and primarily occurs in the ores patronite, vanadinite, roscoelite, and carnotite. Vanadium is mined in mexico, peru, south africa, zambia, italy, germany, and the u. S. Recovered from petroleum residues also produced from vanadium bearing magnetite rocks. In the past it was recovered from minerals in uranium deposits.