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Short "hint"

the oxide of any of the rare-earth elements contained in various minerals

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Usage examples (36)
  • Lynas is building the biggest new rare-earth mine in the world.
  • It produces rare-earth elements such as lanthanum and didymium.
  • China also is taking steps to consolidate its rare-earth industry.
  • Beijing aims to quell fears over tightening of rare-earth exports.
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