Due to uranium and thorium impurities, some xenotime specimens may be weakly to strongly radioactive. Xenotime is used chiefly as a source of yttrium and heavy lanthanide metals (dysprosium, ytterbium and erbium). Occasionally, gemstones are also cut from the finer xenotime crystals. The etymology of the name xenotime is from the Greek words "κευός vain and τιμή honor because the yttrium contained within it was first thought to be a new element. According to Vickery, the original name of the mineral was "kenotime", but due to a misprint, the "k" became an "x", and the change stuck. Xenotime was first described for an occurrence in Vest-Agder, Norway in 1832.
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| - Due to uranium and thorium impurities, some xenotime specimens may be weakly to strongly radioactive. Xenotime is used chiefly as a source of yttrium and heavy lanthanide metals (dysprosium, ytterbium and erbium). Occasionally, gemstones are also cut from the finer xenotime crystals. The etymology of the name xenotime is from the Greek words "κευός vain and τιμή honor because the yttrium contained within it was first thought to be a new element. According to Vickery, the original name of the mineral was "kenotime", but due to a misprint, the "k" became an "x", and the change stuck. Xenotime was first described for an occurrence in Vest-Agder, Norway in 1832.
- Xenotime is a rare earth phosphate mineral, whose major component is yttrium orthophosphate (YPO4). It forms a solid solution series with chernovite-(Y) (YAsO4) and therefore may contain trace impurities of arsenic, as well as silicon dioxide and calcium. The rare earths dysprosium, erbium, terbium, and ytterbium, and metal elements like thorium and uranium (all replacing yttrium) are the expressive secondary components of xenotime. Due to uranium and thorium impurities, some xenotime specimens may be weakly to strongly radioactive. Lithiophyllite, monazite, and purpurite are sometimes grouped with xenotime in the informal "anhydrous phosphates" group. Xenotime is used chiefly as a source of yttrium and heavy lanthanide metals (dysprosium, ytterbium, erbium, and gadolinium). Occasionally,
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| Characteristics
| - Not Radioactive or luminescent and hardness, can be scratched with a steel knife blade. Very slightly attacked or impervious to acids, depending on the composition.
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| Caption
| - Xenotime from the Poços de Caldas alkaline massif, Brazil
Picture by Tom Epaminondas and Eurico Zimbres
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| - Tetragonal - Ditetragonal DipyramidalH-M Symbol Space Group: I 41/amd
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| Color
| - Yellowish brown, Greenish brown, Gray, Reddish brown, Brown.
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| abstract
| - Xenotime is a rare earth phosphate mineral, whose major component is yttrium orthophosphate (YPO4). It forms a solid solution series with chernovite-(Y) (YAsO4) and therefore may contain trace impurities of arsenic, as well as silicon dioxide and calcium. The rare earths dysprosium, erbium, terbium, and ytterbium, and metal elements like thorium and uranium (all replacing yttrium) are the expressive secondary components of xenotime. Due to uranium and thorium impurities, some xenotime specimens may be weakly to strongly radioactive. Lithiophyllite, monazite, and purpurite are sometimes grouped with xenotime in the informal "anhydrous phosphates" group. Xenotime is used chiefly as a source of yttrium and heavy lanthanide metals (dysprosium, ytterbium, erbium, and gadolinium). Occasionally, gemstones are also cut from the finer xenotime crystals. The etymology of the name xenotime is from the Greek words "κενός vain and τιμή honor because the yttrium contained within it was first thought to be a new element. According to Vickery, the original name of the mineral was "kenotime", but due to a misprint, the "k" became an "x", and the change stuck. Xenotime was first described for an occurrence in Vest-Agder, Norway in 1832.
- Due to uranium and thorium impurities, some xenotime specimens may be weakly to strongly radioactive. Xenotime is used chiefly as a source of yttrium and heavy lanthanide metals (dysprosium, ytterbium and erbium). Occasionally, gemstones are also cut from the finer xenotime crystals. The etymology of the name xenotime is from the Greek words "κευός vain and τιμή honor because the yttrium contained within it was first thought to be a new element. According to Vickery, the original name of the mineral was "kenotime", but due to a misprint, the "k" became an "x", and the change stuck. Xenotime was first described for an occurrence in Vest-Agder, Norway in 1832.
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