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Dysprosium (von griech. δυσπρόσιτος „unzugänglich") ist ein chemisches Element mit dem Elementsymbol Dy und der Ordnungszl 66. Im Periodensystem steht es in der Gruppe der Lanthanoide und zählt damit auch zu den Metallen der Seltenen Erden. Eigenschaften 4f 10 6s 2. 66 Dy. Periodensystem. Allgemein Name, Symbol, Ordnungszl: Dysprosium, Dy, 66 Elementkategorie: .
THE UPPER MANTLE AND ALKALIC MAGMAS BY MIHIR K. BosE1 (Department of Geology, Presidency College, Calcutta, India) Abstract. The inhomogeneity of the upper mantle is consistent with the expression of magma types on the global surface. The possible relation between the spatia! variations in the mantle pyrolites and the distribution of alkalic magmas has been discussed, and it is .
For example, neodymium and dysprosium are used in magnets for the generators in wind turbines [5] or motors in electric vehicles, while photovoltaic panels (PV) may use silver, cadmium, tellurium ...
Alkalic magmas generated by partial melting of garnet pyroxenite Marc M. Hirschmann Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA, and Division of Geological and Planetary Science, 17025, California Institute of Technology, Pasadena, California 91125, USA Tetsu Kogiso* Department of Geology and Geophysics, University of Minnesota, .
Dysprosium was first identified in Paris in 1886 by French chemist Paul Émile Lecoq de Boisbaudran. Compounds. Fluorides: DyF 3; Chlorides: DyCl 2, DyCl 3; Bromides: DyBr 2, DyBr 3; Iodides: DyI 2, DyI 3; Oxides: Dy 2 O 3; Sulfides: Dy 2 S 3; Nitrides: DyN; Other websites. Wikimedia Commons has media related to Dysprosium. The Simple English Wiktionary has a definition for: dysprosium ...
Here we use La/Yb and Dy/Yb versus SiO 2 relationships from selected volcanoes to show that amphibole is an important mineral during differentiation of arc magma. Production of intermediate and silicic arc magmas occurs as magmas stall and cool in the midlower crust, where amphibole is stable. Because amphibole is rarely a phenocryst phase, we term this "cryptic amphibole fractionation ...
Global Rare Earth Market Analysis, Size, Share and Key Trends 2018 2025 By top Key Players like : Lynas, Baogang, Canada Rare Earth and more
Dysprosium: Dy 66: Holmium: Ho 67: Erbium: Er 68: Thulium: Tm 69: Ytterbium: Yb 70: Lutetium: Lu 71: Yttrium: Y 39 : 33: Department of the Interior: Geological Survey Fact Sheet 2014 –3078 November 2014: How Do We Use the RareEarth Elements? Due to their unusual physical and chemical properties, such as unique magnetic and optical properties, REEs have ...
Alkaline magmas enriched with rareearth elements include carbonatites, peralkaline granites (pegmatites), and nepheline syenite. ... The price of dysprosium oxide was 994 USD/kg in 2011, but dropped to US265/kg by 2014. On August 29, 2014, the WTO ruled that China had broken freetrade agreements, and the WTO said in the summary of key findings that "the overall effect of the foreign .
The calcalkaline magma series is one of two main subdivisions of the subalkaline magma series, the other subalkaline magma series being the magma series is a series of compositions that describes the evolution of a mafic magma, which is high in magnesium and iron and produces basalt or gabbro, as it fractionally crystallizes to become a felsic magma, which is low in magnesium and ...
"alkaline" series in Massachusetts and the Westerly and Narragansett Pier granites of the subalkaline series in Rhode Island have been analyzed for their content of rareearths (REE), Zr, Hf, Ta, Sc, and Th. Petrographic and field evidence indicates that the subalkaline granites crystallized at a shallower depth and higher PH20 than the alkaline granites. Heavy REE, Zr, Hf, and Ta are all ...
The main aim of igneous petrology is to develop a complete specification of the magma/igneous rock system. This paper is a sequel to an earlier essay ( Middlemost, 1991) on the classification of igneous rocks and magmas. It explores the ways and means of developing a single, consistent method of naming all igneous materials. All modal classifications are fettered by problems arising from ...
Additionally, the five Rare Earth Elements (Dysprosium, Neodymium, Terbium, Europium, and Yttrium) that the DOE Critical Materials Strategy (201011) deemed most critical in the short term for the clean energy economy also appear in the NDS Requirements Report. Currently, geothermal power production has been successfully coupled with extraction of marketable byproducts such as silica, lithium ...
associated magma reservoirs must have been within 10 km of the deposits of interest and (2) igneous rock ages must be within several million years of deposit ages. In the Tonop mining district, these units include the Fraction Tuff, Mizp Trachyte (composed of trachyandesite, andesite, trachydacite, and dacite), and Oddie Rhyolite. In the ...
· Dysprosium, like most other lanthanides, forms the stable sesquioxide Dy 2 O 3. For this form of lanthanide oxide, there are only three polymorphs known up to 2000°C: hexagonal, monoclinic, and cubic [19]. In contrast, terbium is one of three lanthanides (Ce, Pr, Tb) that do not form the stable sesquioxide, Ln 2 O 3. In fact, for terbium the most stable oxide is Tb 4 O 7, although TbO 2 can ...
but REEs were extensively soluble only when alkalis were present. Dysprosium was more soluble than lanthanum when alkali complexed. Addition of silica either traps REE in early crystallizing apatite or negates solubility increases by immobilizing alkalis in silicates. Anionic species such as halogens and carbonates are not sufficient for REE mobility. Additional complexing with alkalis is ...
Dysprosium Dy Dy 2O 3 66 Holmium Ho Ho 2O 3 67 Erbium Er Er 2O 3 68 Thulium Tm Tm 2O 3 ... Alkaline rocks are defined as rocks with Na 2O+K 2O> (SiO 2) (MacDonald and Katsura, 1964) or rocks with mol Na 2O+mol K 2O>mol Al 2O 3 (Shand, 1951). Peralkalinerocks are igneous rocks that are oversaturated with alkalies (Na 2O+K 2O), and therefore undersaturated Al 2O .
Alkalic parental magmas for chassignites? 981 between 1177 °C and 1130 °C at 1 kbar, and 1228 °C and 1166 °C at 10 kbar for several pyroxene grains (exemplified by analyses 5 and 6 of Table 1). Continued growth during cooling can be seen in the zoning of augite from more Capoor interiors to Caenriched rims. Pyroxenes are also found in large olivinehosted polyphase "melt" inclusions ...
Dysprosium (Dy), chemical element, a rareearth metal of the lanthanide series of the periodic table. Dysprosium is a relatively hard metal and is silvery white in its pure form. It is quite stable in air, remaining shiny at room temperature. Dysprosium turnings ignite easily and burn whitehot.
Alkalirich fluids are released into the country rock from the crystallizing magma, and reactions convert the host rock minerals to an assemblage of alkalibearing minerals. Fenites can be classified as sodium or potassium rich. Sodiumrich fenites are characterized by the presence of alkaline feldspar with alkali amphibole or sodic pyroxene, and potassiumrich fenites contain potassium feldspar.
The Important Role of Dysprosium in Modern Permanent Magnets Introduction Dysprosium is one of a group of elements called the Rare Earths. Rare earth elements consist of the Lanthanide series of 15 elements plus yttrium and scandium. Yttrium and scandium are included
Phase Relationships of Hydrous Alkalic Magmas at High Pressures: Production of Nepheline Hawaiitic to Mugearitic Liquids by AmphiboleDominated Fractional Crystallization Within the Lithospheric Mantle Anthony J. Irving, Anthony J. Irving * 1 Department of Earth Space Sciences, University of Washington, Seattle, WA 98195, USA *Corresponding author. Email: irving Search ...
Dysprosium is a chemical element with the symbol Dy and atomic number 66. It is a rareearth element with a metallic silver luster. Dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime. Naturally occurring dysprosium is composed of seven isotopes, the most abundant of which is 164 Dy. Dysprosium was first identified in 1886 by Paul ...
Generation of alkaline magmas in subduction zones by partial melting of mélange diapirs—An experimental study Alicia M. CruzUribe; Alicia M. CruzUribe 1. Geology and Geophysics, Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, Massachusetts 02543, USA. Search for other works by this author on: GSW. Google Scholar. Horst R. Marschall; Horst R. Marschall 1. .
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