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What are the Rare Earth Element (REE)
Rare earth elements (REE) are the 15 Lanthanide series element in the Periodic table namely: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium. Scandium and Yttrium are also REE because they appear in low concentrations in the ground.
REE can be found in a variety of minerals, but the most abundant are found primarily in bastnaesite and monazite.
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