European bank notes contain a little Europium, a rare-earth element. Ironically, large deposits of minerals that contain it are found in China, the US, and Rus

European bank notes contain a little Europium, a rare-earth element. Ironically, large deposits of minerals that contain it are found in China, the US, and Russia. [1] https://en.m.wikipedia.org/wiki/Europium https://en.m.wikipedia.org/wiki/Europium