China has discovered a new ore that contains the rare earth element niobium. Brazil is currently the world's largest supplier of niobium. (Image credit: RHJPhtotos/Shutterstock) Scientists in China have unearthed a never-before-seen type of ore that contains a rare earth element sought after for its superconductive properties. The ore, dubbed niobobaotite, is made of niobium, barium, titanium, iron and chloride, the South China Morning Post reported. It's the niobium that is causing excitement: This light-gray metal is currently used mostly in the production of steel, which it strengthens without adding significant weight. Niobium is also used in making other alloys...