Euxenite

Template:Short description Template:Infobox mineral Euxenite, or euxenite-(Y) (the official mineralogical name), is a brownish black mineral with a metallic luster.

Chemistry

It contains calcium, niobium, tantalum, cerium, titanium, yttrium, and typically uranium and thorium, with some other metals. The chemical formula is Template:Chem. It is commonly partially amorphous due to radiation damage.

Euxenite forms a continuous series with the titanium rich polycrase-(Y) having the formula Template:Chem.

Name and discovery

It was first described in 1870 and named for from the Greek (εὔξενος), hospitable or friendly to strangers, in allusion to the many rare elements that it contains.<ref name=Mindat/><ref name=Webmineral/>

Occurrence

It occurs in granite pegmatites and detrital black sands.<ref name=Handbook/>

It is found in many locations worldwide, notably its type locality in Jølster, Sunnfjord, Norway.<ref name=Webmineral/> Other locations include the Ural Mountains of Russia; Sweden; Minas Gerais, Brazil; Ampangabe, Madagascar; Ontario, Canada; and in Arizona, Wyoming and Colorado in the US.<ref name=Gallery>http://www.galleries.com/minerals/oxides/euxenite/euxenite.htm Mineral Galleries</ref>

Use

Euxenite is used as an ore of the rare earth elements it contains. Rare large crystals have also been used in jewelry.<ref name=Gallery/>

References

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