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scandium sc geochemistry

scandium sc geochemistry

Scandium geochemistry of coals from the Kerman coalfield ...

高达12%返现 · May 31, 2021 · This paper focuses on the geochemistry of scandium (Sc) and major element oxides in coals from the Kerman coal field in southern Iran. A total 118 coal and non-coal rock samples from four main coal deposits in this basin (Hamkar, Hashuni, Hojedk, and Pabdana coal deposits) were sampled and analyzed. The ash yields of Triassic–Jurassic Kerman coals greatly

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(PDF) Scandium (Sc) geochemistry of coals (Siberia ...

This research discusses new original data on the geochemistry of scandium (Sc) in the coals of the Asian region of Russia, Mongolia, Kazakhstan, and Iran.

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Scandium (Sc) geochemistry in coals (Siberia, Russian Far ...

May 01, 2014 · This research discusses new original data on the geochemistry of scandium (Sc) in the coals of the Asian region of Russia, Mongolia, Kazakhstan, and Iran. In general, the studied coals are enriched in Sc compared with the mean value for coals throughout the world. In different regions of the studied territory, coal deposits with anomalous Sc ...

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(PDF) Scandium (Sc) - researchgate.net

Scandium is the lightest Group 3 (IIIB) element and is the lightest of the tr ansition metals. Its. atomic number (proton number) is 21, has only one long-lived isotope, and has an atomic mass of ...

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(PDF) Scandium - ResearchGate

Scandium (Sc) geochemistry in coals (Siberia, Russian Far East, Mongolia, Kazakhstan, and Iran). International. Journal of Coal Geology, 125,2 2 ...

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(PDF) Scandium (Sc) geochemistry of coals (Siberia ...

This research discusses new original data on the geochemistry of scandium (Sc) in the coals of the Asian region of Russia, Mongolia, Kazakhstan, and Iran.

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Scandium (Sc) geochemistry in coals (Siberia, Russian Far ...

This research discusses new original data on the geochemistry of scandium (Sc) in the coals of the Asian region of Russia, Mongolia, Kazakhstan, and Iran. In general, the studied coals are enriched in Sc compared with the mean value for coals throughout the world. In different regions of the studied territory, coal deposits with anomalous Sc ...

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Scandium: Characteristics, Isotopes, Uses and Extraction

Nov 22, 2021 · Scandium was discovered by Lars Fredrik Nilson, a Swedish chemist, in the year 1879. He was trying to make pure ytterbia from 10 kilograms of the mineral euxenite ((Y, Ca, Ce, U, Th)(Nb, Ta, Ti) 2 O 6).Scandium is generally found in the minerals such as thortveitite ((Sc, Y) 2 Si 2 O 7), bazzite (Be 3 (Sc, Al) 2 Si 6 O 18), and wiimote.However, the most common method of obtaining Scandium is ...

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Geochemistry of Sc in the magmatic process: Experimental ...

May 06, 2008 · Data on Sc distribution between aluminosilicate melt and fluoride phases (cryolite in the Na-K parts of the system and fluoride melt in its Li-bearing parts) were experimentally obtained for the Si-Al-Na-K-O-H-F system at 800, 750, and 700°C and $$ P_{H_2 O} $$ = 1000 bar, at the saturation of the aluminosilicate melt with respect to H2O and F. The Sc partition coefficients between ...

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Scandium in the open ocean: A comparison with other group ...

Feb 20, 2016 · 1 Introduction. The marine geochemistry of dissolved scandium (Sc) is poorly understood. The only modern study to publish a depth profile of Sc [Amakawa et al., 2007] showed that in the North Central Pacific, Sc exhibits characteristics of a nutrient-type element with lower concentrations in the surface that increase with depth.The same study calculated that Sc's depth profile is highly ...

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The origin of the hydrous scandium phosphate, kolbeckite ...

The rare hydrous scandium phosphate, kolbeckite, [Sc(PO 4).2H 2 O], has been recognized for the first time from the Hagendorf-Pleystein pegmatite province. The mineral was formed by the alteration of quartz-rich relict cores of pegmatites containing rutile, ilmenite, columbite, pyrochlore, wolframite, monazite and apatite.

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Potential of garnet sand as an unconventional resource of ...

Mar 05, 2021 · In 2017, the metal scandium (Sc) was added to the list of critical raw materials (CRM) compiled by the European Union (EU) 1 and forms part of the revised fourth CRM list of

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Geochemistry of oceanic igneous rocks - Ridges, islands ...

A database on a number of elements in oceanic volcanic rocks is presented, including the principal major-element oxides - SiO2, TiO2, Al2O3, Fe2O3(T), MnO, MgO, CaO, Na2O, K2O, and P2O5 (where T refers to total iron) - and the trace elements - Ba, Ce, Cr, Cu, Ni, Sc, Sr, V, Pb (mainly by isotope dilution), Yb, Zn, and Zr. Interpretations are given for transition metals, with emphasis on Mn, Sc ...

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Scandium Atomic Number

Nov 10, 2021 · Scandium-44 (44 Sc) is a radioactive isotope of scandium that decays by positron emission to stable 44 Ca with a half-life of 4.042 hours.. 44 Sc can be obtained as a daughter radionuclide of long-lived 44 Ti (t 1/2 60.4 a) from 44 Ti / 44 Sc generator or can be produced by nuclear reaction 44 Ca ( p, n) 44 Sc in small cyclotrons. This isotope is of potential interest for clinical PET

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Metal - Wikipedia

A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable (they can be hammered into thin sheets) or ductile (can be drawn into wires). A metal may be a chemical element such as iron; an alloy such as ...

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Aluminium Scandium Alloy Market Size 2021 Global Top ...

Nov 19, 2021 · Aluminium Scandium Alloy Market 2021 Industry Report has been analyzed in detail along with all vital data to propose a strategic growth plan to assemble tactical business judgments.

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Scandium in the open ocean: A comparison with other group ...

Feb 20, 2016 · 1 Introduction. The marine geochemistry of dissolved scandium (Sc) is poorly understood. The only modern study to publish a depth profile of Sc [Amakawa et al., 2007] showed that in the North Central Pacific, Sc exhibits characteristics of a nutrient-type element with lower concentrations in the surface that increase with depth.The same study calculated that Sc's depth profile is highly ...

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The Scandium Geochemistry of Deep-Seated Nodules from

The Scandium Geochemistry of Deep-Seated Nodules from the Stockdale Kimberlite Pipe, Riley County, Kansas M. J. WOODS, P. F. ERVINf D. G. BROOKINS, and N. D. ECKHOFF ... Sc tends to be enriched in rocks with a high pyroxene content. The data for the granulites, 1128d and 1141a, are in good agreement with these ...

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Scandium: Characteristics, Isotopes, Uses and Extraction

Nov 22, 2021 · Scandium was discovered by Lars Fredrik Nilson, a Swedish chemist, in the year 1879. He was trying to make pure ytterbia from 10 kilograms of the mineral euxenite ((Y, Ca, Ce, U, Th)(Nb, Ta, Ti) 2 O 6).Scandium is generally found in the minerals such as thortveitite ((Sc, Y) 2 Si 2 O 7), bazzite (Be 3 (Sc, Al) 2 Si 6 O 18), and wiimote.However, the most common method of obtaining Scandium is ...

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The Geochemistry of Rare Earth Elements (REE), Yttrium (Y ...

The Geochemistry of Rare Earth Elements (REE), Yttrium (Y) and Scandium (Sc) in Some Upper Cretaceous Jordanian Phosphorites Rushdi M. Sadaqah, Abdulkader M. Abed, Kurt A. Grimm and Peir K. Pufahl * ABSTRACT The importance of Rare Earth Elements (REE) in phosphorites had attracted attention in the last few years, since

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Scandium speciation in a world-class lateritic deposit ...

Nov 23, 2016 · Encyclopedia of Geochemistry. Springer International Publishing, Cham, Switzerland, 1–5. Show in context. The large ratio of ionic radius to charge of Sc 3+ hinders the concentration of scandium during most geochemical processes (Samson and Chassé, 2016). View in article

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Scandium - Element information, properties and uses ...

For example, Mendeleev predicted the element's molecular weight would be 44 and that it would form one oxide with formula Eb 2 O 3; scandium has molecular weight 45, and forms scandium oxide, Sc 2 O 3. Some of Mendeleev's predictions were even more detailed.

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SCANDIUM MINERALOGY: PRETULITE WITH SCANDIAN

occurrence of Sc minerals illustrates the high capacity of the phosphate ion to extract scandium and precipitate it as a specific phase, at relatively low-temperature conditions. Keywords: scandium, phosphate, pretulite, zircon, xenotime-(Y), iron ore, Ordovician, Armorican Massif, France. 1657 40#6-déc-02-2443-10 1657 1/3/03, 15:33

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Occurrence and Distribution of Gallium, Scandium, and Rare ...

Jun 15, 2017 · (2019). Occurrence and Distribution of Gallium, Scandium, and Rare Earth Elements in Coal Gangue Collected from Junggar Basin, China. International Journal of Coal Preparation and Utilization: Vol. 39, No. 7, pp. 389-402.

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Critical Elements in Carbonatites: From Exploration ...

Elements of interest include neodymium (Nd), dysprosium (Dy), terbium (Tb), yttrium (Y), niobium (Nb), scandium (Sc), and tantalum (Ta), with other elements included as needed. Three specific objectives are 1) to evaluate at a global scale why some carbonatites are enriched in an element of interest and others are not, 2) to determine where ...

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Recovery of scandium from spent sulfuric acid solution in ...

Nov 01, 2020 · A synergistic extraction system for Sc(III) with P204 and N1923 was studied. • The maximum synergistic coefficient was found to be 12.50. • The formation of hydrogen bond N H + ···O P was confirmed to enhance the scandium extraction.. A scandium separation flow sheet from the spent sulfuric acid solution of TiO2 production was proposed.

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SCANDIUM AS AN IMPORTANT CRITICAL METAL IN THE

•According to the International Union of Pure and Applied Chemistry, Sc is a member of the 17 strong rare earth element (REE) family. However, most reviews of REE geochemistry start by mentioning this fact, but then promptly exclude Sc from further consideration (Chakhmouradian and Wall, 2012).

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Scandium geochemistry of phosphorites, Guizhou, Southwest ...

Mar 28, 2008 · Key words: scandium geochemistry; rare-earth; phosphorite Phosphorite is an important type of sedimentary Sc-bearing deposits, accounting for about 30 % of the scandium resources in the world and about 26 % in China.

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scandium | chemical element | Britannica

scandium (Sc), chemical element, a rare-earth metal of Group 3 of the periodic table. Scandium is a silvery white, moderately soft metal. It is fairly stable in air but will slowly change its colour from silvery white to a yellowish appearance because of formation of Sc2O3 oxide on the surface. The

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International Journal of Coal Geology

Scandium(Sc)geochemistryincoals(Siberia,RussianFarEast,Mongolia, Kazakhstan, and Iran) ... The current study on Sc geochemistry was carried out in the Asian region of Russia, Mongolia, Kazakhstan, and Iran (Fig. 1). The research International Journal of Coal Geology 125 (2014) 22–35

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