Assertion: erbium | /r/HasProperty | lanthanide
Facets:
Source sentences:
text: Erbium is a lanthanide and rare earth metal Color: silvery-white Atomic weight:
text: It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden.
text: It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden.