Results 1 to 10 of about 7,317 (263)

The use of pracaxi oil collector in the selective flotation of xenotime from silicates [PDF]

open access: yesHeliyon, 2023
Rare earth elements have played a key role in technological advancement, attracting great visibility in the global commodity market. Xenotime, a heavy rare earth resource (YPO4), can be found associated with granitic rocks, as in the Pitinga deposit ...
Rafaella Lúcia Martins   +3 more
doaj   +3 more sources

Biofilm formation on the surface of monazite and xenotime during bioleaching [PDF]

open access: yesMicrobial Biotechnology, 2023
Microbial attachment and biofilm formation is a ubiquitous behaviour of microorganisms and is the most crucial prerequisite of contact bioleaching. Monazite and xenotime are two commercially exploitable minerals containing rare earth elements (REEs ...
Arya vanAlin   +9 more
doaj   +3 more sources

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

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   +2 more sources

Xenotime from Morrua, Mozambique [PDF]

open access: yesBulletin of the Geological Society of Finland, 1973
Xenotime, found as well formed crystals in a heavy mineral concentrate from the Morrua pegmatite mine in Mozambique, was studied. The mineral occurs in the sample in two generations, clearly distinguishable from each other.
Th.G. Sahama   +2 more
doaj   +2 more sources

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   +2 more sources

Hydrothermal solubility of TbPO4, HoPO4, TmPO4, and LuPO4 xenotime endmembers at pH of 2 and temperatures between 100 and 250 °C

open access: yesChemical Geology, 2021
Rare earth element (REE) phosphates such as xenotime (YPO4) are important hosts to the heavy (H)REE in natural systems. Xenotime is commonly associated with hydrothermal alteration and mineral replacement reactions and its composition may yield important
Alexander P Gysi
exaly   +2 more sources

A review of rare earth minerals flotation: Monazite and xenotime

open access: yesInternational Journal of Mining Science and Technology, 2015
This paper reviews rare earth minerals (monazite and xenotime) separation by flotation. A wide range of monazite and xenotime flotation test results are summarized including: reasons of variation i ...
Urs A Peuker
exaly   +3 more sources

Monazite, rhabdophane, xenotime & churchite: Vibrational spectroscopy of gadolinium phosphate polymorphs [PDF]

open access: yesSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2018
Rare-earth phosphates with the general formula REEPO4·nH2O belong to four distinct structural types: monazite, rhabdophane, churchite, and xenotime. We report herein the first direct comparison between vibrational spectra of these compounds for the same metal cation i.e. gadolinium.
Clavier, Nicolas   +3 more
openaire   +3 more sources

MINERALOGY OF HOST ROCKS OF THE OSINOVSKOE GOLD-QUARTZ DEPOSIT (CENTRAL URALS) [PDF]

open access: yesМинералогия, 2023
The paper describes the mineralogy of mica shales of the Osinovskoe gold deposit in the Central Urals. Our studies unraveled the role of dynamometamorphism in the transformation of primary rocks and allowed the characterization of their metasomatic ...
N.P. Safina, L.Ya. Kabanova, I.A. Blinov
doaj   +1 more source

MINERALOGY AND GEOCHEMISTRY OF CHLORITHOLITES FROM THE NEPRYAKHINO GOLD FIELD, SOUTH URALS [PDF]

open access: yesМинералогия, 2020
The chlorite rocks (chloritolites) exposed in a bedrock of the Mokhovoe boloto (Moss swamp) gold placer (East Uralian Megazone, South Urals), which occurs on ultramafic rocks, are studied.
V.V. Murzin, D.A. Varlamov
doaj   +1 more source

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