rare earth element

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rare earth element

One of a series of metallic elements that follow lanthanum (at. no. 57) in the periodic table of elements and that have oxides with similar properties. The series comprises the 14-element lanthanide series (at. nos. 58-71 and includes praseodymium, promethium, and ytterbium.
See also: element
References in periodicals archive ?
At the end of the experiment, it is necessary to treat the membrane solution and remove residual rare earth metals in the solution.
PRECIOUS METAL Dr Anouk Borst locates rare earth metals in volcanoes
The U.S has deposits of certain rare earth metals and has one of the first mines that was opened in Southern California in 1940.
Ltd., which is described as "global leaders in rare earth mining, processing and downstream chain." The company has proprietary technologies to process rare earth metals in an environmentally sustainable manner at low cost, according to the release.
Strategic Rare Earth Metals said that the acquisition will immediately enhance the profitability outlook for the company and is projected to generate over USD 5m in revenue for fiscal 2015.
Recent investigations (e.g., Dabelko et al., 2013; Guardian Weekly, 2012; Parry & Douglas, 2011) have scrutinized the environmental friendliness of green-tech products because of their mandatory reliance on rare earth metals as inputs; such inputs, along with clear technological benefits, come with substantial negative environmental risks, such as radioactive and toxic by-products (e.g., uranium, thorium), radioactive fine dust emissions, and chemically contaminated waste water (Humphries, 2012; U.S.
An Australian company has estimated it could extract up to 40,000 tons of rare earth metals per year.
A PLATFORM FOR BUYING AND SELLING RARE earth metals may begin operating this month.
In early March of this year, Honda began supplying a battery manufacturer with rare earth metals extracted from used nickel-metal hydride batteries at a JMC plant for reuse in new nickel-metal hydride batteries of hybrid vehicles.
From plastic to glass to rare earth metals, the vast majority of e-waste ends up in landfills in developing parts of the world such as China.
Altogether, companies spent $100 million exploring Greenland's deposits last year, and several are applying for licenses to begin construction on new mines for gold, iron, zinc, and rare earth metals. (Currently, almost all the world's rare earth metals are mined in China, so the discovery of a huge new deposit in Greenland is significant.)