rare-earth element


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Related to rare-earth element: noble metal

rare-earth element

Etymology: L, rarus, thin; AS, earthe + L, elementum
a metallic element having an atomic number between 57 and 71, inclusively. Also called rare-earth metal.
References in periodicals archive ?
Indeed, rare-earth elements are "rare" only in the sense that they are distributed in small quantities and must be extracted from ores, a time-consuming process.
Many countries are now planning to develop their own or alternative sources of rare-earth elements, and to accelerate efforts to develop technologies that are free of them.
All soil contains some rare-earth elements, so you have to be able to detect the tracer you are using," says Zhang.
The researchers say the fine-powder rare-earth elements are a more effective tool for tracking movement of eroding sediment than what's currently the best tracer: minuscule amounts of the radioactive element cesium ([.
Mineral resources base of rare-earth elements in CIS countries
Newmont has the right to earn a 65% working interest in Rare Element's property, excluding any rights to the rare-earth elements and uranium but including rights to gold and other metals, by performing US$5 million in property work expenditures over a five-year period.
Newmont has the right to earn a 65% working interest in Rare Element Resources' property, excluding any rights to the rare-earth elements and uranium, but including rights to gold and other metals, by performing US$5 million in property work expenditures over a five-year period.
This information will facilitate the design of new products and materials, such as x-ray lasers, pollution detectors, mercury-free lamps, catalysts and other new materials containing rare-earth elements.
25% is better than a three-fold concentration of the rare-earth elements.
Newmont has the right to earn a 65% working interest in Rare Element Resources' property, excluding any rights to the rare-earth elements and uranium but including rights to gold and other metals, by performing US$5 million in property work expenditures over a five-year period.