Results 31 to 40 of about 2,456 (203)
Corona formation around monazite and xenotime during greenschist-facies metamorphism and deformation [PDF]
European Journal of Mineralogy, 2020 Epidote/allanite–fluorapatite coronae around monazite and xenotime are investigated in Permian pegmatites deformed under greenschist-facies conditions during Alpine tectonometamorphism in the Austroalpine basement, Eastern Alps.
F. Hentschel +4 more
doaj +1 more source
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
openaire +1 more source
Известия Томского политехнического университета: Инжиниринг георесурсов, 2021 The relevance and aim. The study of granitoids confined to the Aleysk Zmeinogorsk complex for the first time revealed the presence of rare accessory minerals of yttrium (priorite, fergusonite) in a sample spot of leucogranites of phase IV.
Konstantin L. Novoselov
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Известия Томского политехнического университета: Инжиниринг георесурсов, 2018 The relevance of the work is caused by the fact that the study of the coefficients of REE+Y distribution between the minerals-concentrators of these elements and between minerals and sulfate fluids in various alkaline and weakly acidic systems makes it ...
Galina Petrovna Shironosova +1 more
doaj +1 more source
Phase Transformation Pathway of DyPO4 to 21.5 GPa
Crystals, 2023 Interest in the deformation behavior and phase transformations of rare earth orthophosphates (REPO4s) spans several fields of science—from geological impact analysis to ceramic matrix composite engineering.
Jai Sharma +2 more
doaj +1 more source
, 2023 Supplementary Material: Table 1 Monazite-xenotime-temperature ...
Richard D. Law (16484452) +3 more
core +1 more source
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
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.
Tomaso Tacchetto (23532565) +9 more
core +2 more sources
Hydrothermal formation of heavy rare earth element (HREE)– xenotime deposits at 100 °C in a sedimentary basin [PDF]
, 2018 Most rare earth element deposits form from magmatic fluids, but there have also been discoveries of heavy rare earth element (HREE)– enriched hydrothermal xenotime deposits within sedimentary basins.
David A. Banks +15 more
core +2 more sources
Study of Natural Zircon-Xenotime Assemblages for Estimation of the Actinide Waste Forms Stability
, 1999 In order to estimate compositions and structural stability of YPO4-ZrSiO4-USiO4- ThSiO4 solid solution, natural specimens of (U,Th)-enriched zircon-xenotime assemblages were studied.
M. I. Lapina, S. V. Yudintsev
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