• Rare-earth mineral - Wikipedia

    A rare-earth mineral is a mineral that contains one or more rare-earth elements as major metal constituents. Rare-earth minerals are usually found in association with ...

  • Rare-earth element - Wikipedia

    A rare-earth element (REE) or rare-earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the ...

  • Rare-earth element - Wikipedia

    Rare-earth minerals, as found, usually are dominated by one group or the other, depending on which size range best fits the structural lattice.