Erbium

Erbium
Properties
Atomic symbol	Er
Atomic number	68
Classification	Metallic
Atomic mass	167.259 amu
Other Information
Date of discovery	1842
Name of discoverer	Carl Gustaf Mosander
Name origin	Named for Ytterby, Sweden
Uses	Erbium oxide is used in ceramics to obtain a pink glaze. Also used to make infrared-absorbing glass and in alloys with titanium.
Obtained from	Found with other heavier rare earths.