Results 221 to 230 of about 7,317 (263)

Microstructural studies and carbochlorination kinetics of xenotime ore

Metallurgical and Materials Transactions B, 2001
In this work, a systematic study of the reaction between xenotime, chlorine, and carbon has been performed. The kinetics of carbochlorination of xenotime raw material (rare-earth elements in phosphate form, REPO4) has been studied over a temperature range from 600 °C to 950 °C. The influences of temperature, partial pressure of chlorine, carbon content,
Marco A. Gimenes, Herenilton P. Oliveira
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Non‐Matrix‐Matched Determination of Th‐Pb Ages in Zircon, Monazite and Xenotime by Laser Ablation‐Inductively Coupled Plasma‐Mass Spectrometry

Geostandards and Geoanalytical Research, 2020
Similar to the U‐Pb system, the 232Th‐208Pb decay scheme is also widely utilised in geochronology of Th‐rich accessory minerals. The matrix‐dependent systemic deviations observed between different accessory minerals and the paucity of well‐characterised ...
Tao Luo, He Zhao, Qiu-li Li, Yang Li, Wen Zhang, Jing‐Liang Guo, Yongsheng Liu, Junfeng Zhang, Zhaochu Hu   +8 more
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Monazite and Xenotime in European Rocks

Mineralogical Magazine and Journal of the Mineralogical Society, 1897
As the phosphates of the cerium and yttrium groups, monazite aud xenotime, have proved to be quite widespread microscopic accessories in certain types of Brazilian granites and gneisses, "a batea test has recently been made on a number of hand specimens obtained from the mineral establishment of Dr. F. Krantz, of Bonn, for the purpose of determining if
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The surface properties and flotation behaviour of xenotime

Minerals Engineering, 1994
Abstract Surface properties and flotation behaviour of xenotime using sodium oleate as a collector have been investigated. Adsorption isotherm and flotation studies in combination with chemical modelling were conducted to investigate the surface properties of xenotime and mechanisms of the interactions of the surface with the collector and the ...
Ta-Wui Cheng, A.C. Partridge, Tam Tran, P.L.M. Wong   +3 more
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Simple method of distinguishing zircon, monazite, and xenotime

Journal of Sedimentary Research, 1963
The absorption spectra of the three minerals can be rapidly and easily obtained and provide a simple method of identification. Other rare earth compounds may also be identified by their spectra.
O. H. Hering, W. Zimmerle
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Crystal chemistry of the monazite and xenotime structures

American Mineralogist, 1995
Monazite and xenotime, the RE(P04) dimorphs, are the most ubiquitous rare earth (RE) minerals, yet accurate structure studies of the natural phases have not been reported. Here we report the results of high-precision structure studies of both the natural phases and the synthetic RE(P04) phases for all individual stable rare earth elements.
Yunxiang Ni, John M. Hughes, Anthony N. Mariano   +2 more
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Water Vapor-Assisted "Universal" Nonmatrix-Matched Analytical Method for the in Situ U-Pb Dating of Zircon, Monazite, Titanite, and Xenotime by Laser Ablation-Inductively Coupled Plasma Mass Spectrometry.

Analytical Chemistry, 2018
The U-Pb geochronologic analysis of accessory minerals has played an important role in Earth and solar system science in constraining the ages of a wide variety of rocks and minerals. Laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS)
Tao Luo, Zhaochu Hu, Wen Zhang, Yongsheng Liu, K. Zong, Lian Zhou, Junfeng Zhang, Shenghong Hu   +7 more
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U–Pb vein xenotime geochronology constraints on timing and longevity of orogenic gold mineralization in the Malartic-Val-d’Or Camp, Abitibi Subprovince, Canada

Mineralium Deposita, 2022
M. Herzog, C. Laflamme, G. Beaudoin, J. Marsh, C. Guilmette   +4 more
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Crystal Chemistry and Thermodynamics of HREE (Er, Yb) Mixing in a Xenotime Solid Solution

ACS Earth and Space Chemistry, 2022
A. Strzelecki, Margaret E. Reece, Xiaodong Zhao, Wendy Yu, C. Benmore, Yang Ren, C. Alcorn, A. Migdisov, Hongwu Xu, Xiaofeng Guo   +9 more
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On the miscibility gap in monazite–xenotime systems

Physics and Chemistry of Minerals, 2007
The regular solid solution model has been applied to solid solubility in the monazite–xenotime systems and is verified against the available experimental data for LaPO4–YPO4 and CePO4–YPO4 systems. The model is then used to predict the miscibility gaps in a number of other monazite–xenotime systems.
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