There are 17 rare earth elements (REEs) in all — 15 lanthanides plus yttrium and scandium. It's a fairly diverse group, with ...

According to the USGS, “The rare earths are relatively abundant 17 elements composed of scandium, yttrium, and the lanthanides." Scandium Yttrium Lanthanum Cerium Praseodymium Neodymium ...

In terms of the availability of specific elements, lanthanum and cerium are relatively abundant in rare earths mineral deposits, while neodymium and praseodymium are much less so; meanwhile ...