Yttrialite

Yttrialite

Yttrialite or Yttrialite-(Y) is a rare yttrium thorium sorosilicate mineral with formula: (Y,Th)2Si2O7. It forms green to orange yellow masses with conchoidal fracture. It crystallizes in the monoclinic-prismatic crystal system. It has a Mohs hardness of 5 to 5.5 and a specific gravity of 4.58. It is highly radioactive due to the thorium content.

It is found associated with gadolinite. It was first described in 1889 for an occurrence in the Rode Ranch pegmatite on Baringer Hill, Llano County, Texas. It has also been reported from the Suishouyama pegmatite on Honshū, Japan, and from occurrences in Norway and Sweden.

References

* [http://www.webmineral.com/data/Yttrialite-(Y).shtml Webmineral data]
* [http://www.mindat.org/min-4367.html Mindat with location data]


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  • yttrialite — [ itrijalit ] n. f. • 1907; de yttrium ♦ Minér. Silicate naturel d yttrium, de thorium, etc. ● yttrialite nom féminin Silicate naturel d yttrium, de thorium, etc. yttrialite [itʀijalit] n. f. ÉTYM. 1907; de yttria. ❖ …   Encyclopédie Universelle

  • Yttrialite — L yttrialite est un silicate naturel d yttrium, de thorium, contenant également d autres éléments, se présentant en petites tablettes prismatiques, vert olive à brun noir. Références (en) Webmineral data (en) Mindat with location data …   Wikipédia en Français

  • yttrialite — noun A rare, highly radioactive yttrium thorium sorosilicate mineral with conchoidal fracture …   Wiktionary

  • yttrialite — yt·tri·a·lite …   English syllables

  • yttrialite — əˌlīt noun ( s) Etymology: yttria + lite : an olive green massive mineral (Y,Gd,Th)2Si2O7 consisting of a silicate chiefly of thorium, yttrium, and gadolinium …   Useful english dictionary

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