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List of most-liked Instagram pictures
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Kylie Jenner currently has the most-liked picture on Instagram.
This list contains the top 20 pictures with the most likes on the social photo-sharing platform Instagram. As of August 2018, the most liked picture is of Kylie Jenner's daughter Stormi Webster with 18 million likes.[1] Cristiano Ronaldo has the most pictures in the top 20, with seven.
Contents
1 Top pictures
2 Historical most-liked pictures
3 See also
4 References
Top pictures[edit]
Baby related
Sports related
Rank
Account name
Owner
Post description
Photo
Likes
(millions)
Date posted
1 @kyliejenner Kylie Jenner 1st photo of her daughter Stormi [1] 18.0 February 6, 2018[2]
2 2nd photo of her daughter Stormi [2] 13.0 March 1, 2018[3]
3 @justinbieber Justin Bieber Engagement to Hailey Baldwin [3] July 9, 2018[4]
4 @cristiano Cristiano Ronaldo Juventus announcement [4] 12.2 July 16, 2018
5 @kyliejenner Kylie Jenner Photo with her daughter Stormi [5] 12.1 August 9, 2018[5]
6 @cristiano Cristiano Ronaldo Birth announcement [6] 11.4 November 12, 2017[6]
7 Photo with girlfriend and son [7] 11.2 July 10, 2018[7]
8 Photo with girlfriend [8] July 26, 2018
9 @beyonce Beyoncé Pregnancy announcement [9] February 1, 2017[8]
10 @xxxtentacion XXXTentacion Final image posted before his death [10] 11 May 19, 2018[9]
11 @cristiano Cristiano Ronaldo Family photo [11] 10.9 August 21, 2018
12 @selenagomez Selena Gomez Kidney transplant [12] 10.6 September 14, 2017[10]
13 @kyliejenner Kylie Jenner Pregnancy/birth announcement [13] February 4, 2018[11]
14 @therock Dwayne Johnson 1st photo of his daughter Tiana [14] 10.4 April 23, 2018
15 @beyonce Beyoncé 1st photo of her newborn twins [15] 10.3 July 14, 2017
16 @cristiano Cristiano Ronaldo Photo with Paulo Dybala [16] August 10, 2018
17 @kyliejenner Kylie Jenner Photo with her daughter Stormi [17] 10.1 August 9, 2018[12]
18 @cristiano Cristiano Ronaldo Portugal vs Spain match [18] 10 June 15, 2018[13]
19 @leomessi Lionel Messi Nigeria vs Argentina match [19] 9.9 June 26, 2018[14]
20 @selenagomez Selena Gomez Birthday post [20] 9.8 July 23, 2018[15]
As of August 28, 2018[update]
Historical most-liked pictures[edit]
The following table lists the last seven pictures that were once the most-liked picture on Instagram.
Account name
Owner
Post description
Photo
Likes
(millions)
Days held
Date posted
@kyliejenner Kylie Jenner 1st photo of her daughter Stormi [21] 18.0 203 February 6, 2018[16]
@beyonce Beyoncé Pregnancy announcement [22] 11.2 371 February 1, 2017[17]
@selenagomez Selena Gomez Coca-Cola advertisement [23] 6.9 204 June 25, 2016[18]
@justinbieber Justin Bieber Kiss with Selena Gomez [24] 3.8 69 March 20, 2016[19]
@kendalljenner Kendall Jenner Heart-shaped hairdo [25] 3.6 313 May 26, 2015[20]
@kimkardashian Kim Kardashian Wedding kiss with Kanye West [26] 2.4 393 May 27, 2014[21]
@justinbieber Justin Bieber Hug with Selena Gomez [27] 1.9 145 January 4, 2014[22]
As of August 28, 2018[update]
See also[edit]
List of most-followed Instagram accounts
List of most-liked tweets
List of most-retweeted tweets
References[edit]
Jump up ^ Davies-Day, Rachel (February 7, 2018). "Kylie Jenner's First Photo Of Daughter Stormi Just Became The Most Liked Instagram Photo Ever". MTV (UK). Retrieved February 7, 2018.
Jump up ^ Kylie Jenner (February 6, 2018). "Instagram post by Kylie • Feb 6, 2018 at 3:42pm UTC". Instagram. Retrieved February 6, 2018.
Jump up ^ Kylie Jenner (March 2, 2018). "Kylie on Instagram: "my angel baby is 1 month old today"". Instagram. Retrieved March 2, 2018.
Jump up ^ Justin Bieber (July 9, 2018). "Justin Bieber on Instagram: "Was gonna wait a while to say anything but word travels fast, listen plain and simple Hailey I am soooo in love with everything about you!"". Instagram. Retrieved July 10, 2018.
Jump up ^ Kylie Jenner (August 9, 2018). "Kylie Jenner on Instagram: "my heart"". Instagram. Retrieved August 10, 2018.
Jump up ^ Cristiano Ronaldo (November 12, 2017). "Instagram post by Cristiano Ronaldo • Nov 12, 2017 at 8:19pm UTC". Instagram. Retrieved November 25, 2017.
Jump up ^ Cristiano Ronaldo (July 10, 2018). "Cristiano Ronaldo on Instagram". Instagram. Retrieved July 10, 2018.
Jump up ^ Beyoncé (February 1, 2017). "Instagram post by Beyoncé • Feb 1, 2017 at 6:39pm UTC". Instagram. Retrieved November 25, 2017.
Jump up ^ Jahseh Onfroy (May 19, 2018). "MAKE OUT HILL on Instagram: "LOVE IS WAR"". Instagram. Retrieved June 20, 2018.
Jump up ^ Selena Gomez. "Instagram post by Selena Gomez • September 14, 2017". Instagram. Retrieved September 14, 2017.
Jump up ^ Kylie Jenner (February 4, 2018). "Instagram post by Kylie Jenner • February 4, 2018 at 5:21pm UTC". Instagram. Retrieved February 4, 2018.
Jump up ^ Cristiano Ronaldo (June 15, 2018). "Cristiano Ronaldo on Instagram: "Vamos família!"". Instagram. Retrieved June 17, 2018.
Jump up ^ Kylie Jenner (August 9, 2018). "Kylie on Instagram: "bringing in my birthday tonight with my most special gift. What was life before you, Stormi. I love you my little angel."". Instagram. Retrieved August 11, 2018.
Jump up ^ Lionel Messi (June 26, 2018). "Leo Messi on Instagram: "Agradezco a Dios por esta alegría y les agradezco a ustedes por esa locura hermosa que tienen en cada partido !!! Nada más lindo que ser…"". Instagram. Retrieved June 28, 2018.
Jump up ^ Selena Gomez (July 23, 2018). "Selena Gomez on Instagram: "Another year down.. Thank you for all the bday love. I couldn't be more appreciative of you and my best friends for celebrating with me. I..."". Instagram. Retrieved August 1, 2018.
Jump up ^ Kylie Jenner's Stormi Photo Tops Beyonce's Pregnancy Reveal as Most-Liked Instagram Post Ever
Jump up ^ Beyonce Pregnancy Photo Breaks Selena Gomez Record for Most-Liked Instagram Pic
Jump up ^ Selena Gomez Tops Justin Bieber for Most-Liked Instagram Photo Ever
Jump up ^ Justin Bieber & Selena Gomez Throwback Pic Is Now Instagram's Most-Liked
Jump up ^ Kendall Jenner Breaks Kanye West & Kim Kardashian's Instagram Record
Jump up ^ Kim Kardashian, wife, is most liked Instagram ever
Jump up ^ Kim Kardashian's Wedding Photo Breaks Instagram Record For Most Likes—Sorry, Justin Bieber!
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Nye Committee
From Wikipedia, the free encyclopedia
Jump to: navigation, search
Senator Gerald Nye (R-North Dakota), Head of the Senate Munitions Investigating Committee
The Nye Committee, officially known as the Special Committee on Investigation of the Munitions Industry, was a United States Senate committee (April 12, 1934–February 24, 1936), chaired by U.S. Senator Gerald Nye (a Republican). The committee investigated the financial and banking interests that underlay the United States' involvement in World War I, and was a significant factor in public and political support for American neutrality in the early stages of World War II.[1]
Contents
[hide]
1 Background
2 Organization
3 Process
4 Results
5 See also
6 References
7 Further reading
Background[edit]
During the 1920s and 1930s, dozens of books and articles appeared which argued that arms manufacturers had tricked the United States into entering World War I.[citation needed] One of the best-known and deeply informed critics was Smedley D. Butler, a Major General in the U.S. Marine Corps, who published War is a Racket in 1935.[2]
The push for the appointment of Senator Gerald Nye (R-ND) to the chairmanship of this committee came from Senator George Norris (R-NE). According to peace activist Dorothy Detzer, Norris said, "Nye's young, he has inexhaustible energy, and he has courage. Those are all important boons. He may be rash in his judgments at times, but it's the rashness of enthusiasm."[3] Norris proposed Nye as "...the only one out of the 96 whom he deemed to have the competence, independence and stature for the task."[4]
Organization[edit]
The committee was established on April 12, 1934. There were seven members: Nye, the committee chair; and Senators Homer T. Bone (D-WA), James P. Pope (D-ID), Bennett Champ Clark (D-MO), Walter F. George (D-GA), W. Warren Barbour (R-NJ), and Arthur H. Vandenberg (R-MI).
Alger Hiss served as a legal assistant (counsel) to the committee from July 1934 to August 1935.[5] (In 1948, Hiss was one of several members of the Ware Group alleged by Whittaker Chambers to have infiltrated the Federal government on behalf of Soviet intelligence. Alone of those accused, Hiss was indicted in December 1948, tried twice in May and November 1949, and sentenced for perjury in 1952.) Most famously, Hiss "badgered" DuPont officials and questioned and cross-examined Bernard Baruch on March 29, 1935.[6][7][8] In 1947, however, Baruch and Hiss both attended the burial of Nicholas Murray Butler. Hiss himself later called Baruch "vain and overrated Polonius much given to trite pronouncements about the nation."[9]
Process[edit]
The Nye Committee conducted 93 hearings and questioned more than 200 witnesses. The first hearings were in September 1934 and the final hearings in February 1936. The hearings covered four topics:
The munitions industry
Bidding on Government contracts in the shipbuilding industry
War profits
The background leading up to U.S. entry into World War I.
Although the committee found scant hard evidence to support the widespread public belief that the profits of the arms industry had been a significant factor in America's decision to participate in the war, their reports did little to dispel the notion.[10] The committee documented the huge profits that arms factories had made during the war. It found that bankers had pressured Wilson to intervene in the war in order to protect their loans abroad. Also, the arms industry was at fault for price fixing and held excessive influence on American foreign policy leading up to and during World War I.[2][11]
According to the United States Senate website:
The investigation came to an abrupt end early in 1936. The Senate cut off committee funding after Chairman Nye blundered into an attack on the late Democratic President Woodrow Wilson. Nye suggested that Wilson had withheld essential information from Congress as it considered a declaration of war. Democratic leaders, including Appropriations Committee Chairman Carter Glass of Virginia, unleashed a furious response against Nye for 'dirtdaubing the sepulcher of Woodrow Wilson.' Standing before cheering colleagues in a packed Senate Chamber, Glass slammed his fist onto his desk until blood dripped from his knuckles.[10]
Results[edit]
Nye created headlines by drawing connections between the wartime profits of the banking and munitions industries to America's involvement in World War I. Many Americans felt betrayed and questioned that the war had been an epic battle between the forces of good (democracy) and evil (autocracy). This investigation of these "merchants of death" helped to bolster sentiments for non-interventionism.[10]
The committee reported that between 1915 and January 1917, the United States lent Germany 27 million dollars, and in the same period, it lent to the United Kingdom and its allies 2.3 billion dollars, almost 100 times as much. These payments were made during wartime: July 28, 1914 – November 11, 1918.
Because of these facts Senator Nye, many war critics, and members of the American public concluded that the US entered the war for reasons of profit, not policy — because it was in American commercial interest for the United Kingdom not to lose.[2][11]
The committee's findings did not achieve the aim of nationalization of the arms industry, but gave momentum to the non-interventionist movement and sparked the passage of the Neutrality Acts of 1930s, in 1935, 1936, 1937, and 1939.[10]
See also[edit]
Merchants of death
Military-industrial complex
Truman Committee
References[edit]
Jump up ^ Herman, Arthur. Freedom's Forge: How American Business Produced Victory in World War II, pp. 6, 12, 79, Random House, New York, NY, 2012. ISBN 978-1-4000-6964-4.
^ Jump up to: a b c Butler, Smedley, War Racket: Antiwar America’s decorated, Amazon .
Jump up ^ Cole 1962, p. 68.
Jump up ^ Tuchman, Barbara W. (1984), The March of Folly, New York: Random House, p. 382 .
Jump up ^ Weinstein, Allen (1978). Perjury: The Hiss-Chambers Case. New York. Retrieved 23 November 2016.
Jump up ^ "Munitions industry. Preliminary report on wartime taxation and price control". US Government Printing Office (US GPO). 20 August 1935. pp. 23, 28, 60, 113–115, 127. Retrieved 23 November 2016.
Jump up ^ Smith, John Chabot (1976). Alger Hiss, the true story. New York: Holt, Rinehart and Winston. pp. 83–84. Retrieved 23 November 2016.
Jump up ^ Herman, Arthur (2002). Joseph McCarthy: Reexamining the Life and Legacy of America's Most Hated Senator. New York: Simon & Schuster. pp. 220–221. Retrieved 23 November 2016.
Jump up ^ Hiss, Alger (1988). Recollections of a Life. New York: Seaver/Henry Holt. p. 82. Retrieved 23 November 2016.
^ Jump up to: a b c d "Historical minute essay: Merchants of Death". United States: Senate. Retrieved 17 January 2011.
^ Jump up to: a b Mullins, Eustace. The Secrets of the Federal Reserve. pp. 82–97. ISBN 0-9656492-1-0. .
Further reading[edit]
The Nye Report (full text), MTHolyoke
Nye Committee hearings (Munitions industry, naval shipbuilding: Preliminary report of the Special Committee on Investigation of the Munitions Industry):
1934 September 5–6
1934 September 10–12
1934 December 6–7, 10
1934 December 17–18
1935 June
1935 June 15–19
1935 July 25-August 20
Brandes, Stuart D (1997), Warhogs: A History of War Profits in America .
Cole, Wayne S (1962), Senator Gerald P. Nye and American Foreign Relations .
Coulter, Matthew Ware (1996), "Beyond the Merchants of Death: The Senate Munitions Inquiry of the 1930s and Its Role in Twentieth-Century American History", Dissertation Abstracts International (PhD dissertation), 57 (4): 1806–7
Wiltz, John Edward (Spring 1961), "The Nye Committee Revisited", Historian, Wiley, 23 (2): 211–33, doi:10.1111/j.1540-6563.1961.tb01684.x .
Rosenblatt, Maurice, A Register of His Papers, Library of Congress .
Military Affairs, JSTOR, 40 (2): 59–63, April 1976, JSTOR 1987146 Missing or empty |title= (help).
The Pacific Historical Review, JSTOR, 45 (2): 209–30, May 1976, JSTOR 3638495 Missing or empty |title= (help).
Neutrality acts, US: Department of state .
Retrieved from "https://en.wikipedia.org/w/index.php?title=Nye_Committee&oldid=839030257"
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Rare-earth element
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Rare-earth elements
in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Rare-earth ore (shown with a 19mm penny coin for size comparison)
These rare-earth oxides are used as tracers to determine which parts of a drainage basin are eroding.[1]
Legend:
gadolinium · praseodymium · cerium
samarium · lanthanum
neodymium
A rare-earth element (REE) or rare-earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.[2] Scandium and yttrium are considered rare-earth elements because they tend to occur in the same ore deposits as the lanthanides and exhibit similar chemical properties.
Rare-earth elements are cerium (Ce), dysprosium (Dy), erbium (Er), europium (Eu), gadolinium (Gd), holmium (Ho), lanthanum (La), lutetium (Lu), neodymium (Nd), praseodymium (Pr), promethium (Pm), samarium (Sm), scandium (Sc), terbium (Tb), thulium (Tm), ytterbium (Yb) and yttrium (Y).
Despite their name, rare-earth elements are – with the exception of the radioactive promethium – relatively plentiful in Earth's crust, with cerium being the 25th most abundant element at 68 parts per million, or more abundant than copper. They are not especially rare, but they tend to occur together in nature and are difficult to separate from one another. However, because of their geochemical properties, rare-earth elements are typically dispersed and not often found concentrated as rare-earth minerals in economically exploitable ore deposits.[3] The first such mineral discovered was gadolinite, a mineral composed of cerium, yttrium, iron, silicon and other elements. This mineral was extracted from a mine in the village of Ytterby in Sweden; four of the rare-earth elements bear names derived from this single location.
Contents
[hide]
1 List
2 Abbreviations
3 Discovery and early history
3.1 Spectroscopy
3.2 Early classification
4 Origin
5 Geological distribution
6 Global rare-earth production
6.1 China
6.2 Outside of China
6.3 Other sources
6.3.1 Recycling
6.4 Malaysian refining plans
6.5 Environmental considerations
6.6 Health risks
6.7 Geo-political considerations
7 See also
8 References
9 External links
List[edit]
A table listing the 17 rare-earth elements, their atomic number and symbol, the etymology of their names, and their main usages (see also Applications of lanthanides) is provided here. Some of the rare-earth elements are named after the scientists who discovered or elucidated their elemental properties, and some after their geographical discovery.
Z
Symbol
Name
Etymology
Selected applications
21 Sc Scandium from Latin Scandia (Scandinavia). Light aluminium-scandium alloys for aerospace components, additive in metal-halide lamps and mercury-vapor lamps,[4] radioactive tracing agent in oil refineries
39 Y Yttrium after the village of Ytterby, Sweden, where the first rare earth ore was discovered. Yttrium aluminium garnet (YAG) laser, yttrium vanadate (YVO4) as host for europium in television red phosphor, YBCO high-temperature superconductors, yttria-stabilized zirconia (YSZ), yttrium iron garnet (YIG) microwave filters,[4] energy-efficient light bulbs,[5] spark plugs, gas mantles, additive to steel, cancer treatments
57 La Lanthanum from the Greek "lanthanein", meaning to be hidden. High refractive index and alkali-resistant glass, flint, hydrogen storage, battery-electrodes, camera lenses, fluid catalytic cracking catalyst for oil refineries
58 Ce Cerium after the dwarf planet Ceres, named after the Roman goddess of agriculture. Chemical oxidizing agent, polishing powder, yellow colors in glass and ceramics, catalyst for self-cleaning ovens, fluid catalytic cracking catalyst for oil refineries, ferrocerium flints for lighters
59 Pr Praseodymium from the Greek "prasios", meaning leek-green, and "didymos", meaning twin. Rare-earth magnets, lasers, core material for carbon arc lighting, colorant in glasses and enamels, additive in didymium glass used in welding goggles,[4] ferrocerium firesteel (flint) products.
60 Nd Neodymium from the Greek "neos", meaning new, and "didymos", meaning twin. Rare-earth magnets, lasers, violet colors in glass and ceramics, didymium glass, ceramic capacitors, electric motors of electric automobiles
61 Pm Promethium after the Titan Prometheus, who brought fire to mortals. Nuclear batteries, luminous paint
62 Sm Samarium after mine official, Vasili Samarsky-Bykhovets. Rare-earth magnets, lasers, neutron capture, masers, control rods of nuclear reactors
63 Eu Europium after the continent of Europe. Red and blue phosphors, lasers, mercury-vapor lamps, fluorescent lamps, NMR relaxation agent
64 Gd Gadolinium after Johan Gadolin (1760–1852), to honor his investigation of rare earths. High refractive index glass or garnets, lasers, X-ray tubes, computer memories, neutron capture, MRI contrast agent, NMR relaxation agent, magnetostrictive alloys such as Galfenol, steel additive
65 Tb Terbium after the village of Ytterby, Sweden. Additive in Neodymium based magnets, green phosphors, lasers, fluorescent lamps, magnetostrictive alloys such as terfenol-D, naval sonar systems, stabilizer of fuel cells
66 Dy Dysprosium from the Greek "dysprositos", meaning hard to get. Additive in Neodymium based magnets, lasers, magnetostrictive alloys such as terfenol-D, hard disk drives
67 Ho Holmium after Stockholm (in Latin, "Holmia"), native city of one of its discoverers. Lasers, wavelength calibration standards for optical spectrophotometers, magnets
68 Er Erbium after the village of Ytterby, Sweden. Infrared lasers, vanadium steel, fiber-optic technology
69 Tm Thulium after the mythological northern land of Thule. Portable X-ray machines, metal-halide lamps, lasers
70 Yb Ytterbium after the village of Ytterby, Sweden. Infrared lasers, chemical reducing agent, decoy flares, stainless steel, stress gauges, nuclear medicine, monitoring earthquakes
71 Lu Lutetium after Lutetia, the city that later became Paris. Positron emission tomography – PET scan detectors, high-refractive-index glass, lutetium tantalate hosts for phosphors, catalyst used in refineries, LED light bulb
Abbreviations[edit]
The following abbreviations are often used:
RE = rare earth
REM = rare-earth metals
REE = rare-earth elements
REO = rare-earth oxides
REY = rare-earth elements and yttrium
LREE = light rare-earth elements (Sc, La, Ce, Pr, Nd, Pm, Sm and Eu; also known as the cerium group)[6][7]
HREE = heavy rare-earth elements (Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; also known as the yttrium group)[6][7]
The densities of the LREEs (as pure elements) range from 2.989 (scandium) to 5.264 g/cm3 (europium), whereas those of the HREEs are from 7.9 to 9.8 g/cm3, except for yttrium (4.47 g/cm3) and ytterbium (between 6.9 and 7 g/cm3). The distinction between the groups is more to do with atomic volume and geological behavior (see lower down).
Discovery and early history[edit]
The first rare-earth element discovered was the black mineral "ytterbite" (renamed to gadolinite in 1800). It was discovered by Lieutenant Carl Axel Arrhenius in 1787 at a quarry in the village of Ytterby, Sweden.[8]
Arrhenius's "ytterbite" reached Johan Gadolin, a Royal Academy of Turku professor, and his analysis yielded an unknown oxide (earth) that he called yttria. Anders Gustav Ekeberg isolated beryllium from the gadolinite but failed to recognize other elements that the ore contained. After this discovery in 1794 a mineral from Bastnäs near Riddarhyttan, Sweden, which was believed to be an iron–tungsten mineral, was re-examined by Jöns Jacob Berzelius and Wilhelm Hisinger. In 1803 they obtained a white oxide and called it ceria. Martin Heinrich Klaproth independently discovered the same oxide and called it ochroia.
Thus by 1803 there were two known rare-earth elements, yttrium and cerium, although it took another 30 years for researchers to determine that other elements were contained in the two ores ceria and yttria (the similarity of the rare-earth metals' chemical properties made their separation difficult).
In 1839 Carl Gustav Mosander, an assistant of Berzelius, separated ceria by heating the nitrate and dissolving the product in nitric acid. He called the oxide of the soluble salt lanthana. It took him three more years to separate the lanthana further into didymia and pure lanthana. Didymia, although not further separable by Mosander's techniques, was a mixture of oxides.
In 1842 Mosander also separated the yttria into three oxides: pure yttria, terbia and erbia (all the names are derived from the town name "Ytterby"). The earth giving pink salts he called terbium; the one that yielded yellow peroxide he called erbium.
So in 1842 the number of known rare-earth elements had reached six: yttrium, cerium, lanthanum, didymium, erbium and terbium.
Nils Johan Berlin and Marc Delafontaine tried also to separate the crude yttria and found the same substances that Mosander obtained, but Berlin named (1860) the substance giving pink salts erbium, and Delafontaine named the substance with the yellow peroxide terbium. This confusion led to several false claims of new elements, such as the mosandrium of J. Lawrence Smith, or the philippium and decipium of Delafontaine. Due to the difficulty in separating the metals (and determining the separation is complete), the total number of false discoveries was dozens,[9][10] with some putting the total number of discoveries at over a hundred.[11]
Spectroscopy[edit]
There were no further discoveries for 30 years, and the element didymium was listed in the periodic table of elements with a molecular mass of 138. In 1879 Delafontaine used the new physical process of optical flame spectroscopy and found several new spectral lines in didymia. Also in 1879, the new element samarium was isolated by Paul Émile Lecoq de Boisbaudran from the mineral samarskite.
The samaria earth was further separated by Lecoq de Boisbaudran in 1886, and a similar result was obtained by Jean Charles Galissard de Marignac by direct isolation from samarskite. They named the element gadolinium after Johan Gadolin, and its oxide was named "gadolinia".
Further spectroscopic analysis between 1886 and 1901 of samaria, yttria, and samarskite by William Crookes, Lecoq de Boisbaudran and Eugène-Anatole Demarçay yielded several new spectroscopic lines that indicated the existence of an unknown element. The fractional crystallization of the oxides then yielded europium in 1901.
In 1839 the third source for rare earths became available. This is a mineral similar to gadolinite, uranotantalum (now called "samarskite"). This mineral from Miass in the southern Ural Mountains was documented by Gustave Rose. The Russian chemist R. Harmann proposed that a new element he called "ilmenium" should be present in this mineral, but later, Christian Wilhelm Blomstrand, Galissard de Marignac, and Heinrich Rose found only tantalum and niobium (columbium) in it.
The exact number of rare-earth elements that existed was highly unclear, and a maximum number of 25 was estimated. The use of X-ray spectra (obtained by X-ray crystallography) by Henry Gwyn Jeffreys Moseley made it possible to assign atomic numbers to the elements. Moseley found that the exact number of lanthanides had to be 15, and that element 61 had yet to be discovered.
Using these facts about atomic numbers from X-ray crystallography, Moseley also showed that hafnium (element 72) would not be a rare-earth element. Moseley was killed in World War I in 1915, years before hafnium was discovered. Hence, the claim of Georges Urbain that he had discovered element 72 was untrue. Hafnium is an element that lies in the periodic table immediately below zirconium, and hafnium and zirconium are very similar in their chemical and physical properties.
During the 1940s, Frank Spedding and others in the United States (during the Manhattan Project) developed the chemical ion-exchange procedures for separating and purifying the rare-earth elements. This method was first applied to the actinides for separating plutonium-239 and neptunium from uranium, thorium, actinium, and the other actinides in the materials produced in nuclear reactors. The plutonium-239 was very desirable because it is a fissile material.
The principal sources of rare-earth elements are the minerals bastnäsite, monazite, and loparite and the lateritic ion-adsorption clays. Despite their high relative abundance, rare-earth minerals are more difficult to mine and extract than equivalent sources of transition metals (due in part to their similar chemical properties), making the rare-earth elements relatively expensive. Their industrial use was very limited until efficient separation techniques were developed, such as ion exchange, fractional crystallization and liquid–liquid extraction during the late 1950s and early 1960s.[12]
Early classification[edit]
Before the time that ion-exchange methods and elution were available, the separation of the rare earths was primarily achieved by repeated precipitation or crystallisation. In those days, the first separation was into two main groups, the cerium-group earths (scandium, lanthanum, cerium, praseodymium, neodymium, and samarium) and the yttrium-group earths (yttrium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium). Europium, gadolinium, and terbium were either considered as a separate group of rare-earth elements (the terbium group), or europium was included in the cerium group, and gadolinium and terbium were included in the yttrium group. The reason for this division arose from the difference in solubility of rare-earth double sulfates with sodium and potassium. The sodium double sulfates of the cerium group are difficultly soluble, those of the terbium group slightly, and those of the yttrium group are very soluble.[13] Sometimes, the yttrium group was further split into the erbium group (dysprosium, holmium, erbium, and thulium) and the ytterbium group (ytterbium and lutetium), but today the main grouping is between the cerium and the yttrium groups.[14]
Origin[edit]
Rare-earth elements, except scandium, are heavier than iron and thus are produced by supernova nucleosynthesis or the s-process in asymptotic giant branch stars. In nature, spontaneous fission of uranium-238 produces trace amounts of radioactive promethium, but most promethium is synthetically produced in nuclear reactors.
Due to their chemical similarity, the concentrations of rare earths in rocks are only slowly changed by geochemical processes, making their proportions useful for geochronology and dating fossils.
Geological distribution[edit]
Abundance of elements in Earth's crust per million of Si atoms (y axis is logarithmic)
Rare-earth element cerium is actually the 25th most abundant element in Earth's crust, having 68 parts per million (about as common as copper). Only the highly unstable and radioactive promethium "rare earth" is quite scarce.
The rare-earth elements are often found together. The longest-lived isotope of promethium has a half-life of 17.7 years, so the element exists in nature in only negligible amounts (approximately 572 g in the entire Earth's crust).[15] Promethium is one of the two elements that do not have stable (non-radioactive) isotopes and are followed by (i.e. with higher atomic number) stable elements (the other being technetium).
Due to lanthanide contraction, yttrium, which is trivalent, is of similar ionic size as dysprosium and its lanthanide neighbors. Due to the relatively gradual decrease in ionic size with increasing atomic number, the rare-earth elements have always been difficult to separate. Even with eons of geological time, geochemical separation of the lanthanides has only rarely progressed much farther than a broad separation between light versus heavy lanthanides, otherwise known as the cerium and yttrium earths. This geochemical divide is reflected in the first two rare earths that were discovered, yttria in 1794 and ceria in 1803. As originally found, each comprised the entire mixture of the associated earths. Rare-earth minerals, as found, usually are dominated by one group or the other, depending on which size range best fits the structural lattice.
Thus, among the anhydrous rare-earth phosphates, it is the tetragonal mineral xenotime that incorporates yttrium and the yttrium earths, whereas the monoclinic monazite phase incorporates cerium and the cerium earths preferentially. The smaller size of the yttrium group allows it a greater solid solubility in the rock-forming minerals that comprise Earth's mantle, and thus yttrium and the yttrium earths show less enrichment in Earth's crust relative to chondritic abundance than does cerium and the cerium earths. This has economic consequences: large ore bodies of the cerium earths are known around the world and are being exploited. Corresponding ore bodies for yttrium tend to be rarer, smaller, and less concentrated. Most of the current supply of yttrium originates in the "ion-absorption clay" ores of Southern China. Some versions provide concentrates containing about 65% yttrium oxide, with the heavy lanthanides being present in ratios reflecting the Oddo–Harkins rule: even-numbered heavy lanthanides at abundances of about 5% each, and odd-numbered lanthanides at abundances of about 1% each. Similar compositions are found in xenotime or gadolinite.
Well-known minerals containing yttrium include gadolinite, xenotime, samarskite, euxenite, fergusonite, yttrotantalite, yttrotungstite, yttrofluorite (a variety of fluorite), thalenite, yttrialite. Small amounts occur in zircon, which derives its typical yellow fluorescence from some of the accompanying heavy lanthanides. The zirconium mineral eudialyte, such as is found in southern Greenland, contains small but potentially useful amounts of yttrium. Of the above yttrium minerals, most played a part in providing research quantities of lanthanides during the discovery days. Xenotime is occasionally recovered as a byproduct of heavy-sand processing, but is not as abundant as the similarly recovered monazite (which typically contains a few percent of yttrium). Uranium ores from Ontario have occasionally yielded yttrium as a byproduct.
Well-known minerals containing cerium and the light lanthanides include bastnäsite, monazite, allanite, loparite, ancylite, parisite, lanthanite, chevkinite, cerite, stillwellite, britholite, fluocerite, and cerianite. Monazite (marine sands from Brazil, India, or Australia; rock from South Africa), bastnäsite (from Mountain Pass, California, or several localities in China), and loparite (Kola Peninsula, Russia) have been the principal ores of cerium and the light lanthanides.
The most economically important deposits of rare earths are carbonatites and pegmatites[16]. In these deposits, the incompatible high field strength elements (HFSE) are concentrated by partial melting of a source rock. The resulting magma has an elevated concentration of HFSE, including rare-earth elements, because these elements will prefer to reside in the melt rather than being incorporated into growing minerals. The buoyant melt rises through the crust as a diapir and is emplaced as dykes, sills, in breccias or veins[16][17].
In 2011, Yasuhiro Kato, a geologist at the University of Tokyo who led a study of Pacific Ocean seabed mud, published results indicating the mud could hold rich concentrations of rare-earth minerals. The deposits, studied at 78 sites, came from "[h]ot plumes from hydrothermal vents pull[ing] these materials out of seawater and deposit[ing] them on the seafloor, bit by bit, over tens of millions of years. One square patch of metal-rich mud 2.3 kilometers wide might contain enough rare earths to meet most of the global demand for a year, Japanese geologists report July 3 in Nature Geoscience." "I believe that rare[-]earth resources undersea are much more promising than on-land resources," said Kato. "[C]oncentrations of rare earths were comparable to those found in clays mined in China. Some deposits contained twice as much heavy rare earths such as dysprosium, a component of magnets in hybrid car motors."[18]
Global rare-earth production[edit]
Global production 1950–2000
Until 1948, most of the world's rare earths were sourced from placer sand deposits in India and Brazil.[19] Through the 1950s, South Africa took the status as the world's rare-earth source, after large veins of rare earth bearing monazite were discovered there.[19] Through the 1960s until the 1980s, the Mountain Pass rare earth mine in California was the leading producer. Today, the Indian and South African deposits still produce some rare-earth concentrates, but they are dwarfed by the scale of Chinese production. In 2017, China produced 81% of the world's rare-earth supply, mostly in Inner Mongolia,[3][20] although it had only 36.7% of reserves. Australia was the second and only other major producer with 15% of world production.[21] All of the world's heavy rare earths (such as dysprosium) come from Chinese rare-earth sources such as the polymetallic Bayan Obo deposit.[20][22]
New demand has recently strained supply, and there is growing concern that the world may soon face a shortage of the rare earths.[23] In several years from 2009 worldwide demand for rare-earth elements is expected to exceed supply by 40,000 tonnes annually unless major new sources are developed.[24]
China[edit]
See also: Rare Earths Trade Dispute
These concerns have intensified due to the actions of China, the predominant supplier.[25] Specifically, China has announced regulations on exports and a crackdown on smuggling.[26] On September 1, 2009, China announced plans to reduce its export quota to 35,000 tons per year in 2010–2015 to conserve scarce resources and protect the environment.[27] On October 19, 2010, China Daily, citing an unnamed Ministry of Commerce official, reported that China will "further reduce quotas for rare[-]earth exports by 30 percent at most next year to protect the precious metals from over-exploitation".[28] The government in Beijing further increased its control by forcing smaller, independent miners to merge into state-owned corporations or face closure. At the end of 2010, China announced that the first round of export quotas in 2011 for rare earths would be 14,446 tons, which was a 35% decrease from the previous first round of quotas in 2010.[29] China announced further export quotas on 14 July 2011 for the second half of the year with total allocation at 30,184 tons with total production capped at 93,800 tonnes.[30] In September 2011, China announced the halt in production of three of its eight major rare-earth mines, responsible for almost 40% of China's total rare-earth production.[31] In March 2012, the US, EU, and Japan confronted China at WTO about these export and production restrictions. China responded with claims that the restrictions had environmental protection in mind.[32] In August 2012, China announced a further 20% reduction in production.[33] These restrictions have damaged industries in other countries and forced producers of rare-earth products to relocate their operations to China.[32] The Chinese restrictions on supply failed in 2012, as prices dropped in response to the opening of other sources.[34] The price of dysprosium oxide was 994 USD/kg in 2011, but dropped to 265 USD/kg by 2014.[35]
On August 29, 2014, the WTO ruled that China had broken free-trade agreements, and the WTO said in the summary of key findings that[36]
the Panel concluded that the overall effect of the foreign and domestic restrictions is to encourage domestic extraction and secure preferential use of those materials by Chinese manufacturers.
China declared that it would implement the ruling on September 26, 2014, but would need some time to do so. By January 5, 2015, China had lifted all quotas from the export of rare earths, however export licences will still be required.[35]
Outside of China[edit]
As a result of the increased demand and tightening restrictions on exports of the metals from China, some countries are stockpiling rare-earth resources.[37] Searches for alternative sources in Australia, Brazil, Canada, South Africa, Tanzania, Greenland, and the United States are ongoing.[38] Mines in these countries were closed when China undercut world prices in the 1990s, and it will take a few years to restart production as there are many barriers to entry.[26] One example is the Mountain Pass mine in California, which announced its resumption of operations on a start-up basis on August 27, 2012.[20][39] Other significant sites under development outside of China include the Nolans Project in Central Australia, the remote Hoidas Lake project in northern Canada,[40] and the Mount Weld project in Australia.[20][39][41] The Hoidas Lake project has the potential to supply about 10% of the $1 billion of REE consumption that occurs in North America every year.[42] Vietnam signed an agreement in October 2010 to supply Japan with rare earths[43] from its northwestern Lai Châu Province.[44]
Also under consideration for mining are sites such as Thor Lake in the Northwest Territories, various locations in Vietnam,[20][24][45] and a site in southeast Nebraska in the US, where NioCorp Development Ltd is seeking $1 billion in funding toward opening a niobium, scandium and titanium mine.[46] Additionally, a large deposit of rare-earth minerals was recently discovered in Kvanefjeld in southern Greenland.[47] Pre-feasibility drilling at this site has confirmed significant quantities of black lujavrite, which contains about 1% rare-earth oxides (REO).[48] The European Union has urged Greenland to restrict Chinese development of rare-earth projects there, but as of early 2013, the government of Greenland has said that it has no plans to impose such restrictions.[49] Many Danish politicians have expressed concerns that other nations, including China, could gain influence in thinly populated Greenland, given the number of foreign workers and investment that could come from Chinese companies in the near future because of the law passed December 2012.[50]
Adding to potential mine sites, ASX listed Peak Resources announced in February 2012, that their Tanzanian-based Ngualla project contained not only the 6th largest deposit by tonnage outside of China, but also the highest grade of rare-earth elements of the 6.[51]
North Korea has been reported to have sold rare-earth metals to China. During May and June 2014, North Korea sold over 1.88 million USD worth of rare-earth metals to China.[52] Other sources suggest that North Korea has the world's second largest reserve of rare-earth metals, with potentially over 20 million tons in total.[53]
Other sources[edit]
Significant quantities of rare-earth oxides are found in tailings accumulated from 50 years of uranium ore, shale and loparite mining at Sillamäe, Estonia.[54] Due to the rising prices of rare earths, extraction of these oxides has become economically viable. The country currently exports around 3,000 tonnes per year, representing around 2% of world production.[55] Similar resources are suspected in the western United States, where gold rush-era mines are believed to have discarded large amounts of rare earths, because they had no value at the time.[56]
Nuclear reprocessing is another potential source of rare earth or any other elements.[citation needed] Nuclear fission of uranium or plutonium produces a full range[citation needed] of elements, including all their isotopes.[citation needed] However, due to the radioactivity of many of these isotopes, it is unlikely that extracting them from the mixture can be done safely and economically.
In May 2012, researchers from two universities in Japan announced that they had discovered rare earths in Ehime Prefecture, Japan.[57][58]
In January 2013 a Japanese deep-sea research vessel obtained seven deep-sea mud core samples from the Pacific Ocean seafloor at 5,600 to 5,800 meters depth, approximately 250 kilometres (160 mi) south of the island of Minami-Tori-Shima.[59] The research team found a mud layer 2 to 4 meters beneath the seabed with concentrations of up to 0.66% rare-earth oxides. A potential deposit might compare in grade with the ion-absorption-type deposits in southern China that provide the bulk of Chinese REO mine production, which grade in the range of 0.05% to 0.5% REO.[60][61]
Recycling[edit]
Another recently developed source of rare earths is electronic waste and other wastes that have significant rare-earth components.[62] New advances in recycling technology have made extraction of rare earths from these materials more feasible,[63] and recycling plants are currently operating in Japan, where there is an estimated 300,000 tons of rare earths stored in unused electronics.[64] In France, the Rhodia group is setting up two factories, in La Rochelle and Saint-Fons, that will produce 200 tons of rare earths a year from used fluorescent lamps, magnets and batteries.[65][66]
Malaysian refining plans[edit]
In early 2011, Australian mining company, Lynas, was reported to be "hurrying to finish" a 230 million USD rare-earth refinery on the eastern coast of Peninsular Malaysia's industrial port of Kuantan. The plant would refine ore — lanthanides concentrate from the Mount Weld mine in Australia. The ore would be trucked to Fremantle and transported by container ship to Kuantan. However, the Malaysian authorities confirmed that as of October 2011, Lynas was not given any permit to import any rare-earth ore into Malaysia. On February 2, 2012, the Malaysian AELB (Atomic Energy Licensing Board) recommended that Lynas be issued a Temporary Operating License (TOL) subject to completion of a number of conditions. On April 3, 2012, Lynas announced to the Malaysian media that these conditions had been met, and was now waiting on the issuance of the licence. Within two years, Lynas was said to expect the refinery to be able to meet nearly a third of the world's demand for rare-earth materials, not counting China."[67] The Kuantan development brought renewed attention to the Malaysian town of Bukit Merah in Perak, where a rare-earth mine operated by a Mitsubishi Chemical subsidiary, Asian Rare Earth, closed in 1992 and left continuing environmental and health concerns.[68] In mid-2011, after protests, Malaysian government restrictions on the Lynas plant were announced. At that time, citing subscription-only Dow Jones Newswire reports, a Barrons report said the Lynas investment was $730 million, and the projected share of the global market it would fill put at "about a sixth."[69] An independent review initiated by the Malaysian Government, and conducted by the International Atomic Energy Agency (IAEA) in 2011 to address concerns of radioactive hazards, found no non-compliance with international radiation safety standards.[70]
On 2 September 2014, Lynas was issued a 2-year Full Operating Stage License (FOSL) by the Malaysian Atomic Energy Licensing Board (AELB).[71]
Environmental considerations[edit]
False-color satellite image of the Bayan Obo Mining District, 2006
Mining, refining, and recycling of rare earths have serious environmental consequences if not properly managed. A potential hazard could be low-level radioactive tailings resulting from the occurrence of thorium and uranium in rare-earth element ores.[72] Improper handling of these substances can result in extensive environmental damage. In May 2010, China announced a major, five-month crackdown on illegal mining in order to protect the environment and its resources. This campaign is expected to be concentrated in the South,[73] where mines – commonly small, rural, and illegal operations – are particularly prone to releasing toxic wastes into the general water supply.[20][74] However, even the major operation in Baotou, in Inner Mongolia, where much of the world's rare-earth supply is refined, has caused major environmental damage.[75]
Residents blamed a rare-earth refinery at Bukit Merah for birth defects and eight leukemia cases within five years in a community of 11,000 — after many years with no leukemia cases. Seven of the leukemia victims died. Osamu Shimizu, a director of Asian Rare Earth, said "the company might have sold a few bags of calcium phosphate fertilizer on a trial basis as it sought to market byproducts; calcium phosphate is not radioactive or dangerous" in reply to a former resident of Bukit Merah who said that "The cows that ate the grass [grown with the fertilizer] all died."[76] Malaysia's Supreme Court ruled on 23 December 1993 that there was no evidence that the local chemical joint venture Asian Rare Earth was contaminating the local environment.[77]
The Bukit Merah mine in Malaysia has been the focus of a US$100 million cleanup that is proceeding in 2011. After having accomplished the hilltop entombment of 11,000 truckloads of radioactively contaminated material, the project is expected to entail in summer, 2011, the removal of "more than 80,000 steel barrels of radioactive waste to the hilltop repository."[68]
In May 2011, after the Fukushima Daiichi nuclear disaster, widespread protests took place in Kuantan over the Lynas refinery and radioactive waste from it. The ore to be processed has very low levels of thorium, and Lynas founder and chief executive Nicholas Curtis said "There is absolutely no risk to public health." T. Jayabalan, a doctor who says he has been monitoring and treating patients affected by the Mitsubishi plant, "is wary of Lynas's assurances. The argument that low levels of thorium in the ore make it safer doesn't make sense, he says, because radiation exposure is cumulative."[76] Construction of the facility has been halted until an independent United Nations IAEA panel investigation is completed, which is expected by the end of June 2011.[78] New restrictions were announced by the Malaysian government in late June.[69]
IAEA panel investigation is completed and no construction has been halted. Lynas is on budget and on schedule to start producing 2011. The IAEA report has concluded in a report issued on Thursday June 2011 said it did not find any instance of "any non-compliance with international radiation safety standards" in the project.[79]
If the proper safety standards are followed, REE mining is relatively low impact. Molycorp (before going bankrupt) often exceeded environmental regulations to improve public image.[80]
Health risks[edit]
REEs are a large group with many different properties and levels in the environment, because of this, and limited research it has been difficult to determine safe levels of exposure for humans.[81] A number of studies have focused on risk assessment based on routes of exposure and divergence from back ground levels related to nearby agriculture,mining, and industry.[82][83] It has been demonstrated that numerous REEs have toxic properties and are present in the environment or in work places. Exposure to these can lead to a wide range of negative health outcomes including death. However these elements are numerous and present in many different forms and at different levels of toxicity, as such it has been difficult to give blanket warnings on cancer risk and toxicity as some of these are harmless while others pose a risk.[81][83]
What toxicity is shown appears to be at very high levels of exposure through ingestion of contaminated food and water, through inhalation of dust/smoke particles either as an occupational hazard or due to proximity to contaminated sites such as mines and cities. It was found that people living near mines in China had many times the levels of REEs in their blood, urine, and hair compared to controls far from mining sites. This higher level was related to the high levels of REEs present in the vegetables they cultivated, the soil, and the water from the wells indicating that the high levels were caused by the nearby mine.[82][83] While REE levels varied between men and women the group most at risk were children.[82]
Geo-political considerations[edit]
China has officially cited resource depletion and environmental concerns as the reasons for a nationwide crackdown on its rare-earth mineral production sector.[31] However, non-environmental motives have also been imputed to China's rare-earth policy.[75] According to The Economist, "Slashing their exports of rare-earth metals… is all about moving Chinese manufacturers up the supply chain, so they can sell valuable finished goods to the world rather than lowly raw materials."[84] Furthermore, China currently has an effective monopoly on the world's REE Value Chain.[85] (all the refineries and processing plants that transform the raw ore into valuable elements[86]). In the words of Deng Xiaoping, a Chinese politician from the late 1970s to the late 1980s, "The Middle East has oil; we have rare earths ... it is of extremely important strategic significance; we must be sure to handle the rare earth issue properly and make the fullest use of our country's advantage in rare earth resources."[87]
One possible example of market control is the division of General Motors that deals with miniaturized magnet research, which shut down its US office and moved its entire staff to China in 2006[88] (it should be noted that China's export quota only applies to the metal but not products made from these metals such as magnets).
It was reported,[89] but officially denied,[by whom?][90] that China instituted an export ban on shipments of rare-earth oxides (but not alloys) to Japan on 22 September 2010, in response to the detainment of a Chinese fishing boat captain by the Japanese Coast Guard.[91] On September 2, 2010, a few days before the fishing boat incident, The Economist reported that "China...in July announced the latest in a series of annual export reductions, this time by 40% to precisely 30,258 tonnes."[92]
The United States Department of Energy in its 2010 Critical Materials Strategy report identified dysprosium as the element that was most critical in terms of import reliance.[93]
A 2011 report "China's Rare-Earth Industry", issued by the US Geological Survey and US Department of the Interior, outlines industry trends within China and examines national policies that may guide the future of the country's production. The report notes that China's lead in the production of rare-earth minerals has accelerated over the past two decades. In 1990, China accounted for only 27% of such minerals. In 2009, world production was 132,000 metric tons; China produced 129,000 of those tons. According to the report, recent patterns suggest that China will slow the export of such materials to the world: "Owing to the increase in domestic demand, the Government has gradually reduced the export quota during the past several years." In 2006, China allowed 47 domestic rare-earth producers and traders and 12 Sino-foreign rare-earth producers to export. Controls have since tightened annually; by 2011, only 22 domestic rare-earth producers and traders and 9 Sino-foreign rare-earth producers were authorized. The government's future policies will likely keep in place strict controls: "According to China's draft rare-earth development plan, annual rare-earth production may be limited to between 130,000 and 140,000 [metric tons] during the period from 2009 to 2015. The export quota for rare-earth products may be about 35,000 [metric tons] and the Government may allow 20 domestic rare-earth producers and traders to export rare earths."[94]
The United States Geological Survey is actively surveying southern Afghanistan for rare-earth deposits under the protection of United States military forces. Since 2009 the USGS has conducted remote sensing surveys as well as fieldwork to verify Soviet claims that volcanic rocks containing rare-earth metals exist in Helmand province near the village of Khanneshin. The USGS study team has located a sizable area of rocks in the center of an extinct volcano containing light rare-earth elements including cerium and neodymium. It has mapped 1.3 million metric tons of desirable rock, or about 10 years of supply at current demand levels. The Pentagon has estimated its value at about $7.4 billion.[95]
See also[edit]
Geology portal
Group 3 element
KREEP
Rare earth mineral
References[edit]
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External links[edit]
Wikimedia Commons has media related to Rare earth elements.
Tabuchi, Hiroko (5 October 2010). "Japan Recycles Rare Earth Minerals From Used Electronics". The New York Times.
Kan, Michael (7 October 2010). "Common gadgets may be affected by shortage of rare earths". New Zealand PC World Magazine. Retrieved 6 October 2010.
Auslin, Michael (13 October 2010). "Japan's Rare-Earth Jolt". Wall Street Journal. Retrieved 13 October 2010.
Aston, Adam (15 October 2010). "China's Rare-Earth Monopoly". Technology Review (MIT). Retrieved 17 October 2010.
Hurst, Cindy (March 2010). "China's Rare Earth Elements Industry: What Can the West Learn?" (PDF). Institute for the Analysis of Global Security (IAGS). Retrieved 18 October 2010.
Rare earths mining: China's 21st Century gold rush, BBC News June 2010 infographic examining China's role in the rare earths market.
Rare Earth Elements in National Defense: Background, Oversight Issues, and Options for Congress Congressional Research Service, March 31, 2011.
Digging for rare earths: The mines where iPhones are born | Apple – CNET News, September 26, 2012
Khan, Malek; Lundmark, Martin; Hellström, Jerker "Rare Earth Elements and Europe’s Dependence on China" in Strategic Outlook 2013, Swedish Defence Research Agency (FOI), June 2013, pp. 93–98.
Terra Rara: The strange story of some political elements Prof Andrea Sella, Royal Institution filmed event, 31 May 2013
BBC feature
Rare-earth Metals
Moon exploration will reduce the shortage of rare earth metals
The dystopian lake filled by the world’s tech lust (April 2015), BBC Future
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