rare earth element—erbium [Video] | Earth elements, Non ...
Aug 21, 2019 - Erbium metal is a member of the lanthanide group, and erbium is a silver-gray metal. It is always found along with other rare earths and is present in small amounts in the same minerals of basalt and xenotime; it has an abundance of 3.8 ppm in the earth's crust. It slowly loses its luster in the air, reacts slowly with water and dissolves in acid.
