Juan José Elhuyar Lubize (15 June 1754 – 20 September 1796) was a Spanish chemist and mineralogist, who was best known for being first to isolate tungsten with his brother Fausto Elhuyar in 1783. He was born in Logroño, in northern Spain and died in Santafé de Bogotá, New Granada (present-day Colombia) at 42. External links Juan José Delhuyar. Polymath Virtual Library, Fundación Ignacio Larramendi References 1754 births 1796 deaths 18th-century Spanish chemists Spanish mineralogists Discoverers of chemical elements People from Logroño Spanish people of Basque descent