A black mineral containing yttrium, erbium, uranium, and other rare earth elements, valued as a source of radioactive and rare earth materials.
From Greek eu- (good) + xenos (guest/stranger) + -ite (mineral suffix), named for its property of hosting ('guest to') various rare elements within its crystal structure.
Euxenite was actually a major source of uranium and rare earth elements for early nuclear research and technology—a mineral that quite literally hosted the ingredients for the atomic age!
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