Rare Earth Abbreviations

There are many abbreviations associated with the rare earth elements. Rare earth abbreviations include REE, RE, REM, REO, LREE and HREE. Here is a list of what the rare earth abbreviations mean.

• RE = rare earth (any of the rare earth elements or any of the ores containing rare earth elements)

• REE = rare earth elements - usually (LREE, HREE, Y, Sc, [Th, U])

• REM = rare earth metals (synonym of rare earth)

• REO = rare earth oxides

• LREE = light rare earth elements ((La, Ce, Pr, Nd, Sm)

• HREE = heavy rare earth elements (Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu plus Y) or less commonly (Eu-Lu)