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Xenotime is a rare-earth phosphate mineral, the major component of which is yttrium orthophosphate (Y P O 4). It forms a solid solution series with chernovite-(Y) ( Y As O 4 ) and therefore may contain trace impurities of arsenic , as well as silicon dioxide and calcium .
The mineral species Xenotime-(Gd) was approved by the IMA in 2023, [3] a description of the mineral was published in 2024 based on crystals found within gadolinium rich xenotime-(Y) sampled at the Zimná Voda quartz vein near Prakovce. [4] Besides yttrium, the examined type material bore further rare earth elements such as dysprosium, samarium ...
The xenotime group is a grouping of minerals containing anhydrous phosphates and vanadates. Xenotime group members. Members of the xenotime group include: [1]
It is a colourless to pale yellow mineral with a vitreous luster. It has a tetragonal crystalline structure, and has the chemical makeup of Y(AsO₄), which is yttrium, arsenic, and oxygen, at a 1:1:4 ratio. It has a specific gravity of 4.866g/cm3. [1] Chernovite-(Y) is part of the Xenotime group.
FILE PHOTO: A Wall Street sign hangs in front of a U.S. Flag outside the New York Stock Exchange (NYSE) before the Federal Reserve announcement in New York City, U.S., September 18, 2024.
In 2023, the region received $100 million, compared with $1.6 billion for sub-Saharan Africa and $1.5 billion for Europe and Eurasia, according to a Pew Research Center analysis.
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