Results 51 to 60 of about 7,317 (263)

Identification of rare earth elements in synthetic and natural monazite and xenotime by visible-to-shortwave infrared reflectance spectroscopy

Physics and chemistry of minerals
To support the role of proximal and remote sensing in geological rare earth element (REE) resource exploration, we studied the reflectance spectroscopy of synthetic single- and mixed-REE phosphate phases. Synthesis yielded monazite for the elements La to
A. Dijkstra, W. Bakker, F. Deon, C. Marcatelli, M. P. Plokker, H. Hintzen   +5 more
semanticscholar   +1 more source

LA-ICP-MS and TEM constraints on the magmatic and post-magmatic processes recorded by the zircon-xenotime intergrowth in pegmatite (Piława Górna, Góry Sowie Block, SW Poland)

Lithos, 2021
A strongly altered zircon-xenotime intergrowth in pegmatite from the ...
Fabian Tramm, R. Wirth, B. Budzyń, J. Sláma, A. Schreiber   +4 more
semanticscholar   +1 more source

Mineralogy of alluvial sediments of Avzyan gold region (the Southern Urals)

Литосфера, 2018
The Avzyan gold region is located within the Bashkirian anticlinorium and includes lode gold deposits and placers. The Gorny Priisk, Bogryashka and Ulyuk-Bar gold deposits are hosted in the Riphean metamorphosed carbonaceous sequence.
Ekaterina E. Palenova, Konstantin A. Novoselov, Elena V. Belogub, Ivan A. Blinov, Svetlana D. Grigor’Eva   +4 more
doaj   +1 more source

Linear Correlations of Gibbs Free Energy of REE Phosphates (Monazite, Xenotime, and Rhabdophane) and Internally Consistent Binary Mixing Properties

Minerals
Rare Earth Elements (REE) phosphates (monazite, xenotime, and rhabdophane) are critical REE-bearing minerals typically formed in hydrothermal and magmatic ore deposits.
Ruiguang Pan, A. Gysi, A. Migdisov, Lei Gong, Peng Lu, Chen Zhu   +5 more
semanticscholar   +1 more source

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
openaire   +2 more sources

Kajian Konsep Teknologi Pengolahan Pasir Zirkon Lokal Yang Mengandung Monasit, Senotim Dan Ilmenit [PDF]

, 2016
The existence of zircon (ZrSiO4) in the nature is mostly associated with some of the valuable oxide compounds (VOC), such as TiO2 and rare earth oxides (REO).
Biyantoro, D. (Dwi), Poernomo, H. (Herry), Purwani, M. V. (Maria)   +2 more
core   +3 more sources

Recovery of Xenotime and Florencite from Silicate Minerals Using a Combined Technique of Magnetic Separation and Flotation

Minerals
Xenotime (YPO4), a significant phosphatic minerl rich in heavy rare earth elements (HREEs), typically associates with granitic rocks, exemplified in the Wolverine rare earth deposit in Australia.
Weiwei Wang, Erdou Li, Zhengyao Li, Weiyao Zhu, Yuanyuan Wang   +4 more
semanticscholar   +1 more source

Theoretical and experimental investigation of Xenotime-type rare earth phosphate REPO4, (RE = Lu, Yb, Er, Y and Sc) for potential environmental barrier coating applications

Scientific Reports, 2020
The mechanical and thermophysical properties of Xenotime-type REPO4 (RE = Lu, Yb, Er, Y and Sc) have been theoretically and experimentally investigated for a potential environmental barrier coating (EBC) topcoat application.
Jing Han, Yanfei Wang, Rong-jun Liu, Fan Wan   +3 more
semanticscholar   +1 more source

Rare earth elements and yttrium minerals in altered granite-porphyry and hosting high-alumina schists in the Pellapahk Cu-Mo occurrence (Kolmozero-Voronya Belt)

Vestnik MGTU
Rare Earth Elements (REE) and yttrium phosphates monazite-(Ce) and xenotime-(Y), fluorine carbonates synchysite-(Ce) and parisite-(Ce), silicate allanite-(Ce) have been studied in the metamorphic rocks in the area of the Pellapahk Cu-Mo porphyry ...
Kalinin A. A., Khachatryan M. G., Savchenko Ye. E.   +2 more
doaj   +1 more source

Variscan thrusting in I- and S-type granitic rocks of the Tribeč Mountains, Western Carpathians (Slovakia): evidence from mineral compositions and monazite dating

Geologica Carpathica, 2015
The Tribeč granitic core (Tatric Superunit, Western Carpathians, Slovakia) is formed by Devonian/Lower Carboniferous, calc-alkaline I- and S-type granitic rocks and their altered equivalents, which provide a rare opportunity to study the Variscan ...
Broska Igor, Petrík Igor
doaj   +1 more source