Page 2: Research news on rare earth elements

Rare earth elements (REEs) are a group of 17 chemically similar metallic elements comprising the lanthanides (lanthanum to lutetium) plus scandium and yttrium, characterized by partially filled 4f electron shells that confer unique magnetic, optical, and catalytic properties. In geochemistry and materials science, REEs are typically divided into light and heavy subgroups based on atomic number and ionic radius, which control partitioning behavior, coordination chemistry, and lattice incorporation in minerals. Their coherent but subtly fractionated behavior in magmatic, metamorphic, and sedimentary processes makes REE patterns powerful tracers of source composition, redox conditions, and fluid–rock interaction in Earth and planetary systems.

Sulfated yeast rises to the challenge facing rare earth metals

Ever wonder what happens to those old, broken electronics after tossing them? How about how new ones are being produced despite dwindling resources? The seemingly endless supply of gadgets hides an increasingly critical problem: ...

What rare earth elements are and why they matter

Rare earth elements are critical to many industries—used in electric motors, medical imaging and diagnostics, oil and gas refining, and computer and phone screens. The 17 rare earth elements all have important uses and are ...

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