Results 11 to 20 of about 2,325 (156)

Corona formation around monazite and xenotime during greenschist-facies metamorphism and deformation [PDF]

open access: yesEuropean 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   +4 more sources

Xenotime reveals Caledonian hydrothermal overprint on Neoproterozoic Cu mineralization, East Greenland

open access: yes, 2023
Constraining the age of many types of ore deposits remains challenging because of the lack of radiogenic isotopes incorporated into common ore-forming minerals. The timing of pre-Caledonian-hosted Cu mineralization along the entire c.
Olierook, Hugo K. H.   +31 more
core   +4 more sources

Synthesis and properties of anhydrous rare-earth phosphates, monazite and xenotime: a review. [PDF]

open access: yesRSC Adv
This article summarizes the synthesis methods, crystal structures, and properties of anhydrous monazite and xenotime (REPO4) crystalline materials. For both monazite and xenotime, currently available Inorganic Crystal Structure Database data were used to
Chong S   +5 more
europepmc   +2 more sources

Nanoscale geochemistry and geochronology of xenotime: application to Earth sciences [PDF]

open access: yes, 2023
The PhD project titled ‘Nanoscale geochemistry and geochronology of xenotime: application to Earth sciences’ aims at identifying and understanding mineralogical mechanisms that impact geochronometers at the nanoscale. The project focuses on the nanoscale
Joseph, Cilva
core   +1 more source

Shock deformation microstructures in xenotime from the Spider impact structure, Western Australia

open access: yes, 2021
The rare earth element-bearing phosphate xenotime (YPO4) is isostructural with zircon, and therefore it has been predicted that xenotime forms similar shock deformation microstructures. However, systematic characterization of the range of microstructures
Katarina Miljkovic (23287867)   +5 more
core   +2 more sources

Palaeoproterozoic prograde metasomatic-metamorphic overprint zones in Archean tonalitic gneisses, eastern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1999
Several occurrences of coarse-grained kyanite rocks are exposed in the Archaean area of eastern Finland in zones trending predominantly northwest-southeast that crosscut all the Archaean structures and, locally, the Palaeoproterozoic metadiabase dykes ...
M. Pajunen, M. Poutiainen
doaj   +1 more source

Investigation of the Microstructure of Fine-Grained YPO4:Gd Ceramics with Xenotime Structure after Xe Irradiation

open access: yesCeramics, 2022
This paper reports on the preparation of xenotime-structured ceramics using the Spark Plasma Sintering (SPS) method. Y0.95Gd0.05PO4 (YPO4:Gd) phosphates were obtained using the sol-gel method.
Dmitriy A. Mikhaylov   +11 more
doaj   +1 more source

A Spectroscopic Investigation of Eu3+ Incorporation in LnPO4 (Ln = Tb, Gd1-xLux, X = 0.3, 0.5, 0.7, 1) Ceramics

open access: yesFrontiers in Chemistry, 2019
We have investigated the incorporation of the luminescent Eu3+ cation in different LnPO4 (Ln = Tb, Gd1−xLux, x = 0.3, 0.5, 0.7, 1) host phases. All samples were analyzed with powder X-ray diffraction (PXRD), Raman spectroscopy, and site-selective time ...
Henry Lösch   +7 more
doaj   +1 more source

Hydrothermal formation of heavy rare earth element (HREE)– xenotime deposits at 100 °C in a sedimentary basin [PDF]

open access: yes, 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   +14 more
core   +2 more sources

Phase Transformation Pathway of DyPO4 to 21.5 GPa

open access: yesCrystals, 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

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