Why are they called “rare” if some are relatively abundant in nature? 
The Misleading Name Behind the Metals That Power the Modern World The term “Rare Earth Elements” (REEs) conjures an image of scarce, exotic metals hidden deep within the Earth’s crust. Yet, this is one of the great paradoxes of modern science and industry: many of these so-called “rare” elements are not truly rare at all. Some, like cerium and lanthanum, are...
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