xenotime

(ˈzɛnəʊˌtaɪm) na yellow-brown crystalline mineral that is a phosphate of yttrium

Thesaurus

Noun

xenotime - a brown-to-yellow mineral that is a phosphate of yttrium in crystalline formatomic number 69, thulium, Tm - a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotimeatomic number 70, Yb, ytterbium - a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotimeatomic number 39, Y, yttrium - a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloysmineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition

Xenotime

xenotime

[′zēn·ə‚tīm] (mineralogy) Y(PO₄) A tetragonal mineral of varying color, consisting of yttrium phosphate.

Xenotime

a mineral; yttrium phosphate, YPO₄ (V₂O₃ ~ 63.1 percent). Xenotime always contains rare earths, sometimes ThO₂, UO₂ (up to 5 percent), ZrO₂ (up to 3 percent), and others. It crystallizes in the tetragonal system, forming pyramidal or prismatic crystals; it is isostructural with zircon. Xenotime is light brown or reddish brown in color. It has a hardness of 4–5 on the mineralogical scale and a density of 4,450-4,590 kg/ m³. It occurs in granites and pegmatites in the form of granules or crystals ingrown into feldspar or quartz; it also occurs in alluvial deposits. Xenotime is closely associated with monazite and zircon.

The best-known deposits of xenotime are the pegmatite and alluvial deposits of Brazil (Minas Geraes) and the pegmatites of Norway (Hitterö, near Arendal, and Kragerö in Telemark) and Sweden (Ytterby). In the USSR, xenotime is found in the pegmatites of Karelia.

xenotime

xenotime

Xenotime

xenotime

Xenotime

xenotime

Words related to xenotime

noun a brown-to-yellow mineral that is a phosphate of yttrium in crystalline form

Related Words