Helium Diffusion in Natural Xenotime [PDF]
Geochemistry, Geophysics, Geosystems, 2019 AbstractThe typically high U and Th contents of xenotime ([Y,HREE]PO4) make this accessory mineral a promising candidate for (U‐Th)/He thermochronometry if the 4He diffusivity can be constrained well enough to estimate its closure temperature. We report new results for two 4He step‐heating experiments on different‐sized fragments of a natural xenotime ...
Alyssa J. Anderson +3 more
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Geochemical characterisation of xenotime formation environments using U-Th [PDF]
, 2017 Xenotime (YPO4) is a trace component in many metasedimentary and some igneous rocks, altered rocks and many hydrothermal ore assemblages, where it forms in response to a range of different processes from igneous crystallisation to low-temperature early ...
McNaughton, Neal, Rasmussen, B.
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Comparative Binding Studies of the Chelators Methylolanthanin and Rhodopetrobactin B to Lanthanides and Ferric Iron. [PDF]
ChembiochemThe synthesis and the investigation of the lanthanide (Ln) and Fe‐binding properties of the putative lanthanophore methylolanthanin (MLL) and the siderophore rhodopetrobactin B (RPB B) are reported. While both chelators bind Lns, they unexpectedly precipitate with Lns under biologically relevant conditions and thereby challenge the proposed classic ...
Gutenthaler-Tietze SM +9 more
europepmc +2 more sources
An in-situ electron microscopy study of dual ion-beam irradiated xenotime-type ErPO$_4$ [PDF]
, 2020 International audienceRare-earth phosphates adopting the xenotime (REPO 4 ; RE = Tb − Lu & Y, Sc) structure are proposed as a potential matrix for the confinement of minor actinides.
Dacheux, Nicolas +6 more
core +1 more source
Xenotime at the Nanoscale:U-Pb Geochronology and Optimisation of Analyses by Atom Probe Tomography [PDF]
, 2021 Xenotime (YPO4) is an accessory phase common in low to high-temperature geological environments. Xenotime is an established geochronometer, though its small size, low modal abundance and textural complexity make it more difficult to analyse with ...
Saxey, David W. +16 more
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Spectrophotometric determination of erbium using kojic acid dye in different rare earth concentrates
Egyptian Journal of Petroleum, 2018 A sensitive and selective spectrophotometric method was studied for the determination of erbium (Er) with kojic acid dye (koj) and cetylpyridinium chloride (CPC) as a cationic surfactant from Egyptian monazite and xenotime concentrates using third ...
A.A. Abdou +4 more
doaj +1 more source
Lanthanide Sulfate Recovery by Synergistic Dimethyl Ether and Na<sub>2</sub>SO<sub>4</sub> Fractional Crystallization. [PDF]
ChemSusChemThis work demonstrates synergistic lanthanide salt recovery from an aqueous magnet leachate to single ppm concentrations using Na2SO4 combined with dimethyl ether crystallization. This waste valorization process minimizes chemicals consumed and waste generated while maximizing the recovery of a critical material product. Lanthanides (Lns) are important
Tolbert C +6 more
europepmc +2 more sources
Decomposition of Xenotime by Sulfuric Process
The Journal of the Society of Chemical Industry, Japan, 1965 各種高純度材料として用いられる希土類元素中,イットリウム族化合物の分離精製法を検討するため本研究を行なった。第1段階として原鉱石の分解法(硫酸分解)について実験した。従来から用いられている方法,硫酸による浸漬法,水浸法について実験した結果,ゼノタイム粉末20gを1～2mlの水で湿潤し, 湿潤試料に濃硫酸60ml加え, 260～280℃ で2 時間加熱して分解すればイットリウム分はより効果的に抽出できた。ゼノタイム(50.0%Y2O3)粉末20gを上記の方法で分解し, 粗製酸化イットリウム(95～96%純度)9.5gが得られた。
Itiro TOYAMA, Tomizo NAKAMURA
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Radiogenic Pb in xenotime trapped in nanoscale inclusions of apatite during fluid alteration [PDF]
, 2023 This study focuses on the low-temperature mineralogical response of xenotime, a phosphate mineral routinely used as a geochronometer, to fluid-assisted alteration.
Tacchetto, Tomaso +19 more
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Petrology and mineralogy of the Ulaan Del Zr-Nb-REE deposit, Lake Zone, Western Mongolia
Mongolian Geoscientist, 2020 The Ulaan Del deposit is located in the Lake Zone, Western Mongolia. In the area, middle-late Devonian alkali dykes of the Khalzan Complex are hosted in the middle-late Cambrian granodiorite-tonalite of the Togthohiinshil Complex. The alkali dykes of the
Sanjsuren Oyunbat
doaj +1 more source