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]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • 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

  • List of minerals U-Z (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

  • William Niven — Infobox Scientist name = William Niven image width = 200 px caption = William Niven, mineralogist, circa 1895 birth date = 6 October, 1850 birth place = Bellshill, Lanarkshire, Scotland death date = June 2, 1937 death place = Austin, Texas,… …   Wikipedia

  • YTTRIUM — De Ytterby, village de Suède. Symbole chimique: Y Numéro atomique: 39 Masse atomique: 88,905 g Point de fusion: 1 523 0C Point d’ébullition: 3 337 0C Densité (à 25 0C): 4,457 Élément chimique du groupe des terres rares, de couleur argentée,… …   Encyclopédie Universelle

  • Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare …   Wikipedia

  • List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”