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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]
In 1839 the third source for rare earths became available. This is a mineral similar to gadolinite called uranotantalum (now called "samarskite") an oxide of a mixture of elements such as yttrium, ytterbium, iron, uranium, thorium, calcium, niobium, and tantalum. This mineral from Miass in the southern Ural Mountains was documented by Gustav Rose.
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.
A sample of the mineral xenotime (YPO 4) Yttrium phosphate , YPO 4 , is the phosphate salt of yttrium . [ 1 ] It occurs in nature as minerals xenotime [ 2 ] and weinschenkite.
Also called Indianite. A mineral from the lime-rich end of the plagioclase group of minerals. Anorthites are usually silicates of calcium and aluminium occurring in some basic igneous rocks, typically those produced by the contact metamorphism of impure calcareous sediments. anticline An arched fold in which the layers usually dip away from the fold axis. Contrast syncline. aphanic Having the ...
Monazite is a waxy mineral that is formed through the crystallization of igneous rocks and the metamorphism of clastic sedimentary rocks. [25] This mineral is typically mined in placer deposits, with gold commonly found as a byproduct. [25] The rare earth element neodymium is found in monazite, making it a rare mineral. [25]