rare earth aluminum

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Rare-earth element |

Rare-earth element: Rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium ... rare-earth metal.

RARE EARTHS - USGS

metal that is soft and malleable, ... Rare earths were first produced commercially in the 1880s ... rare-earth production in the United States was recorded in 1893 in