Results 21 to 30 of about 1,919 (210)

Metamict zircon from Mozambique [PDF]

open access: yesBulletin of the Geological Society of Finland, 1985
Metamict zircon from granite pegmatites of Zambézia, Mozambique has been studied by annealing, microprobe, X-ray diffraction, DT and TG analysis, and IR spectroscopy. The specimens are contaminated by epitaxially intergrown xenotime.
R. Törnroos
doaj   +1 more source

Anatomy of intergrowth OF florencite and xenotime crystals with oscillatory zoning from veins of the svodovy au-ree occurrence, subpolar u [PDF]

open access: yesМинералогия, 2020
The morphology and anatomy of a paragenetic intergrowth of REE minerals (xenotime and florencite) from veins of Svodovy Au-REE occurrence (Subpolar Urals) are described.
S.A. Repina, V.A. Muftakhov
doaj   +1 more source

THORIUM, URANIUM AND RARE EARTH MINERALIZATION IN ROCKS OF THE UGAKHAN GOLD DEPOSIT, BODAIBO ORE REGION [PDF]

open access: yesМинералогия, 2021
The paper reports on the results of studies of ore-bearing rocks of the Ugakhan gold deposit (Bodaybo district): metasandstones, metasiltstones and carbonaceous shales.
E.V. Shepel   +3 more
doaj   +1 more source

Preparation and characterization of PbTi0(3) ceramics modified by a natural mixture of rare earth oxides of xenotime [PDF]

open access: yesMaterials Research, 2013
Lead titanate ceramics modified by xenotime (Xm) with nominal composition (Pb, Xm)TiO3, Xm 10 or 15 mol %, were prepared by the conventional oxide mixture technique. Xenotime is a natural mineral consisting of a mixture of rare earth oxides.
Jair Baltazar-Rodrigues   +4 more
doaj   +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   +1 more source

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  

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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