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Abstract Carbonatites are enriched in critical raw materials such as the rare-earth elements (REE), niobium, fluorspar and phosphate. A better understanding of their fluid regimes will improve our knowledge of how to target and exploit economic deposits. This study shows that multiple fluid phases penetrated the surrounding fenite aureole during carbonatite emplacement at Chilwa Island, Malawi.

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USGS Mineral Resources Program The Rare

Rare-earth elements (REEs) are used in the components of many devices used daily in our modern society, such as: the screens of smart phones, computers, and flat panel televisions; the motors of computer drives; batteries of hybrid and electric cars; and new generation light bulbs.

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Rare

Oct 15, 2019Simultaneous detection of multiple types of microRNA (miRNA) is of great significance in early cancer diagnosis. In this study, rare-earth-doped CaF 2 upconversion nanocrystals (CaF 2: RE 3+, namely Ho 3+ or Tm 3+ and Yb 3+) are formed within the mesopores of silica nanoparticles (CaF 2: RE 3+ MSN), in an in-situ manner, by capillary effect and thermo-decomposition method.

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Why rare earth recycling is rare

French chemical company Rhodia has announced multiple rare earth recycling projects. Mitsubishi Electric reported in 2012 that it is recovering and recycling rare earth magnets from its air conditioners, and announced development of a magnet recovery machine for hard disk drives and air conditioners, with the intent to bring the

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Rare

Nov 13, 2019Nov 13, 2019The chemistry of actinide (An) and rare-earth metal (Ln and group 3) complexes featuring multiple bonding interactions with main-group fragments has witnessed an enormous growth since the first mentioning in the mid-eighties and apparent stagnation in the nineties. The recent surge of interest is particularl

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Retrospective analysis of pediatric patients with multiple

Apr 17, 2021Multiple rare-earth magnets can cause serious gastrointestinal injury and have a high risk of requiring intervention for removal. Primary prevention is very important. Visible warnings and regular information over the package should be advertised to inform children and their parents involved in the use of these multiple rare-earth magnets.

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Retrospective analysis of pediatric patients with multiple

Background: The aim of this study was to characterize patients who ingested multiple rare-earth magnets, reveal the harm of rare-earth magnet foreign bodies in the digestive tract, and develop a clinical management algorithm. Methods: This was a retrospective review of patients with rare-earth magnet foreign bodies in the digestive tract admitted to a university-affiliated pediatric medical

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What are 'rare earths' used for?

Mar 13, 2012Mar 13, 2012Rare earth elements are chemically similar and are sometimes used in similar ways. Rare earths are a group of 17 chemically similar elements crucial to the manufacture of many hi-tech products

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Rare

The rare-earth elements, also called the rare-earth metals or (in context) rare-earth oxides, or the lanthanides (though yttrium and scandium are usually included as rare-earths) are a set of 17 nearly-indistinguishable lustrous silvery-white soft heavy metals. Scandium and yttrium are considered rare-earth elements because they tend to occur in the same ore deposits as the lanthanides and

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Multiple rare

Apr 26, 2018Apr 26, 2018article{osti_1437358, title = {Multiple rare-earth ion environments in amorphous (Gd2O3)0.230(P2O5)0.770 revealed by gadolinium K-edge anomalous x-ray scattering}, author = {Cole, Jacqueline M. and Cramer, Alisha J. and Shastri, Sarvjit D. and Mukaddem, Karim T. and Newport, Robert J.}, abstractNote = {A Gd K-edge anomalous X-ray scattering (AXS) study is

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Heterometallic Clusters with Multiple Rare Earth Metal

Although a series of complexes with rare earth (RE) metal-metal bonds have been reported, complexes which have multiple RE-Rh bonds are unknown. Here we present the identification of the first example of a molecule containing multiple RE-Rh bonds. The complex with multiple Ce-Rh bonds was synthesize

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Rare Earth Elements: Why the U.S. is missing out on the

Nov 17, 2019Nov 17, 2019Rare earth elements and metals used in cell phones, supercomputers and more are sitting on the ocean floor, ready to be mined by multiple countries. So why is the U.S. on the sidelines? 2019 Nov 17

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Rare Earth Salts

Nov 16, 201716 Nov 2017 - Rare Earth Salts Wins Multiple Awards. 19 Oct 2017 - Battelle, Rare Earth Salts Team on Department of Energy Project. 15 Jun 2017 - Rare Earth Salts Commences Initial Production of Rare Earth Oxides in United States. 2 Jun 2017 - Rare Earth Salts and Medallion Agree to Produce Rare Earth Products

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Rare Earths Statistics and Information

The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays. The rare earths are a relatively abundant group of 17 elements composed of scandium, yttrium, and the lanthanides. The elements range in crustal abundance from cerium, the 25th most abundant element of the 78 common elements in the Earth's

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