Research is underway on turbine and generator designs which reduce the need for neodymium, or eliminate the use of rare-earth metals altogether.

Found with almost all other rare-earth metals but never by itself, lutetium is very difficult to separate from other elements.

What we're after is germanium and some other rare-earth metals for instruments.

These bases are poorly soluble in water and by their activity are close to the hydroxides of rare-earth metals.

In southern Ukraine, he found rare-earth metals beneath what would become the city of Samotkan.

It is a silvery-white, malleable and ductile rare-earth metal.

Holmium is relatively inexpensive for a rare-earth metal with the price about US$ 1000 per kg.

It's not clear why rare-earth metals collected in this location.

Cerium, like all rare-earth metals, is of low to moderate toxicity.

Most crystal scintillators require high-purity chemicals and sometimes rare-earth metals that are fairly expensive.