rare earth definition

As of January 2023, China holds the largest share of proven rare earth deposits in the world, boasting 33.8% of all reserves. Vietnam is in second place, with reserves of 16.9% of all available rare earths. Russia and Brazil are tied for third, each accounting for around 16.1% of the world's rare earth reserves.

The meaning of RARE EARTH ELEMENT is any of a series of metallic elements of which the oxides are classed as rare earths and which include the …

Rare earth metals are used in virtually every electronic device. Want to learn more? Find out which words work together and produce more natural-sounding English with the Oxford Collocations Dictionary app. Try it for free as part of the …

Definition and Significance of Rare Earth Elements (REEs) Rare Earth Elements refer to a group of seventeen chemically similar elements, including scandium, yttrium, and the fifteen lanthanides. Despite the name, REEs are not exceptionally rare in terms of abundance in the Earth's crust; however, they are typically dispersed and not often ...

Rare earth elements (REEs), which comprise of only 17 elements from the entire periodic table, play a critical role to our national security, energy independence, …

Rare Earth definition: Any of various oxides of the rare-earth elements.

Overview. The rare earth elements (REEs) are comprised of the lanthanide elements plus scandium and yttrium, which have similar physical properties and are often found in the same ores and deposits. Specifically, REEs include the light REEs (LREEs) such as lanthanum, cerium, praseodymium, neodymium, samarium, europium, and the heavy …

Meaning of rare earth. What does rare earth mean? Information and translations of rare earth in the most comprehensive dictionary definitions resource on the web.

Rare-earth elements (hereinafter referred to as REE) are a group of seventeen chemical elements in the periodic table, in particular the fifteen lanthanides as well as …

The Discovery and Commercialization of the Rare Earth Elements. The term rare earth was coined when an unusual black rock was unearthed by a miner in Ytterby, Sweden, in 1788. The ore was called "rare" because …

2 meanings: 1. any oxide of a lanthanide 2. Also called: rare-earth element. another name for lanthanide.... Click for more definitions.

The rare earth elements are a group of transition metals, found mainly in the first row below the periodic table (the lanthanide series), plus scandium and yttrium. Despite the name, these elements are fairly …

Rare earth definition: the oxide of any of the rare-earth elements contained in various minerals. See examples of RARE EARTH used in a sentence.

Rare Earths. The rare earths, or rare earth elements (REE), are a relatively abundant group of elements consisting of scandium, yttrium, and the 15 elements of the lanthanide series of the periodic table. Scandium (Sc) is the lightest rare earth element. Scandium is present in crustal rocks in amounts greater than lead and precious metals, but ...

In order of increasing atomic mass, the 17 rare earth metals and some of their common applications are given below. Scandium: Atomic weight 21. Used to strengthen aluminum alloys. Yttrium: Atomic weight 39. Used in superconductors and exotic light sources. Lanthanum: Atomic weight 57. Used in specialty glasses and optics, …

The term rare earth element is commonly abbreviated to "REE" and their oxides to "REO". To avoid confusion, it is wise in reporting REE resources to define whether yttrium is included and to report REO values rather than REE. In this paper, REO includes yttrium oxide and TREO refers to the total sum of the REO.

Rare earth elements are a group of seventeen chemical elements that occur together in the periodic table (see image). The group consists of yttrium and the 15 lanthanide elements …

What are rare earth elements? Strictly speaking, they are elements like others on the periodic table – such as carbon, hydrogen and oxygen – with atomic numbers 57 to 71. There are two others...

The light rare earth elements, light-group rare earths, or LREE are a subset of the lanthanide series of the rare earth elements, which are themselves a special set of transition metals. Like other metals, the light rare earths have a shiny metallic appearance. They tend to produce colored complexes in solution, conduct heat and electricity ...

Rare earth ore, shown with a United States penny for size comparison Clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium.. Rare earth elements ("REEs") are a set of seventeen chemical elements.They include the fifteen lanthanides plus scandium and yttrium. Scandium and yttrium are rare earth elements …

The rarest rare earth element, thulium. Jurii, CC BY. They are rare in one sense, though – mineralogists would call them "dispersed," meaning they're mostly sprinkled across the planet in ...

Define rare earth. rare earth synonyms, rare earth pronunciation, rare earth translation, English dictionary definition of rare earth. n. 1. Any of various oxides of the rare-earth elements. 2. A rare-earth element. American Heritage® Dictionary of the English Language, Fifth Edition....

Rare 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 ...

Rare-earth elements (hereinafter referred to as REE) are a group of seventeen chemical elements in the periodic table, in particular the fifteen lanthanides as well as yttrium and scandium as defined by the International Union of Pure and Applied Chemistry (IUPAC). Scandium and yttrium are considered REE since they tend to occur in the …

The rare earth elements are often described as being a 'light-group rare earth element' (LREE) or 'heavy-group rare earth element' (HREE). The definition of a LREE and HREE is based on the electron configuration of each rare-earth element. The LREE are defined as lanthanum, atomic number 57 through gadolinium, atomic number 64.

The meaning of RARE EARTH is any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but relatively scarce minerals.

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 crust at 60 parts per million, to thulium and lutetium, the least abundant rare-earth elements at about 0. ...

Rare-earth metals, also referred to as rare-earth elements (REEs), are a group of seventeen naturally occurring chemical elements. Most are found on the periodic table's F block. They possess unique properties that make them valuable in various technological applications. Rare-earth metals exhibit high magnetic strength, …

Rare-earth element - Minerals, Ores, Uses: The content of the individual rare-earth elements varies considerably from mineral to mineral and from deposit to deposit. The minerals and ores are generally classified as "light" or "heavy"; in the former group most of the elements present are the light-atomic-weight elements (i.e., lanthanum, cerium, …

The first rare-earth carbonate was produced in October 2018 and, in December, the company reported that the first shipment of 2578 kg of this product had left the project site for customers in China 109. Cummins Range Deposit: This prospect is located 130 km southwest of Halls Creek. The Cummins Range intrusive is part of an …

The rare earth elements (REE) are a group of 17 chemically similar elements (the lanthanides, scandium (Sc), and yttrium (Y)). Here we focus on the lanthanides and Y, which behave in similar ways in most environments in the Earth's crust. They are typically divided into light rare earth elements (LREE) and heavy rare earth elements (HREE).

Rare earths are a group of 15 elements in the periodic table known as the Lanthanide series. Rare earths are categorised into Light Rare Earths (lanthanum to samarium) and …

Rare earths are also used as a refiner in gas used to fuel internal combustion engines. Rare earth magnets, like that of Neodymium-iron-boron, are used in sensors, and even ferrite magnets contain small amounts of rare earths and minor metals like Lanthanum and Cobalt to improve magnet performance by as much as 25%.

A precise definition of rare earth elements (REEs) and in-depth discussion of how common REEs are, worldwide REE production, and current REE …

rare earth meaning: one of a group of metal chemical elements that are difficult to find in large quantities, and are…. Learn more.

rare: [adjective] marked by wide separation of component particles : thin.

Rare earth elements facts. Rare earth elements (REE) are a group of 17 elements, including the 15 elements of the lanthanide series on the periodic table of elements together with the transition metals scandium and yttrium. The latter two elements exhibit similar properties to the lanthanides and are found in the same ore bodies.

The rare earth elements (REE) consist of 17 elements: Sc, Y and the lanthanoids La–Lu. Their magnetic and luminescent properties make them essential components of digital and low carbon technologies. They have risen to prominence because production from mining through to manufacturing is dominated by China, making REE the epitome of critical ...

They're much more abundant in the Earth's crust than many other valuable elements. Even the rarest rare earth, thulium, with atomic number 69, is 125 times more common than gold. And the least ...

Rare earth elements are also quite insoluble and therefore relatively immobile during low-grade metamorphism, weathering, and hydrothermal alteration. This is a very important feature giving insight into the origin of igneous and sedimentary rocks through the low-temperature processes that commonly affected the Archean crust.