rare earth n. 1.Any of various oxides of the rare-earth elements. 2.A rare-earth element. [rare(because the minerals from which the rare-earth elements were first isolated are uncommon) +earth,metallic oxide.] American Heritage® Dictionary of the English Language, Fifth Edition. Copyright...
《The Rare Earth Elements: Fundamentals and Applications》(David A. Atwood)内容简介: The book provides a comprehensive coverage of the basic chemistry, particularly inorganic chemistr...
The realm of rare earth elements is undergoing rapid transformations fueled by technological progress and the escalating demand for these essential components. The spectrum of REEs encompasses the lanthanide series elements, namely La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb,...
The incompatible minor and trace elements include Th, K, rare earth elements (REE), and P, collectively referred to as KREEP4,5,6. These elements were highly enriched in the final liquid dregs, referred to as “urKREEP”6. The final minerals to crystallize were KREEP-rich high-Ca ...
New and published data for the concentration and relative abundances of rare earth elements (REE) are synthesized for the sediments of the North Atlantic Ocean and coastal regions off China. The new data come from the shelf, slope, and abyssal regions off North America, the delta of the Amazo...
Abundances of the rare-earth elements (REE) in nine pelagic sediments from the Pacific Ocean floor were determined. Gross features of the REE patterns for the studied samples are similar to those of the North American shale composite (HASKIN , 1966), but rather small but clear differences from...
摘要: The depth distributions of La, Ce, Nd, Sm, Eu, Gd, Dy, Er and Yb in the oceanic water column are used to evaluate the marine geochemical cycle of the rare earth elements and their application as water-mass tracers.关键词: Experimental/ element relative abundance geochemistry ...
What are Rare Earth Metals? REEs, also called rare earth metals or rare earth oxides, or lanthanides, are a set of 17 silvery-white soft heavy metals. The 17 rare earth elements are: lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), ...
A systematic study of rare earth elements(REE) within the surface sediments from 10 bays situated along the coast of Guangdong Provence,China,has facilitated a more rigorous understanding of constraints on sediment provenance in the area.The results show that REE concentrations are similar within a ...
The concentrations of the rare earth elements (REEs) in samples from 15 rivers, from 6 estuarine transects, and of 5 coastal seawaters are reported and have been used with literature data to examine the continuity in average REE pattern between average continental crust and the dissolved input ...