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thorium silicate

См. также в других словарях:

  • THORIUM — En 1828, Jöns Jacob Berzelius découvrit un nouveau métal qu’il baptisa thorium en l’honneur de Thor, dieu de la mythologie scandinave. Bien qu’il soit relativement rare, cet élément a été utilisé depuis longtemps dans l’industrie, principalement… …   Encyclopédie Universelle

  • thorium processing — Introduction       preparation of the ore for use in various products.       Thorium (Th) is a dense (11.7 grams per cubic centimetre), silvery metal that is softer than steel. It has a high melting temperature of approximately 1,750° C (3,180°… …   Universalium

  • Silicate de zirconium — Zircon Cet article possède un paronyme, voir : Zircone. Zircon …   Wikipédia en Français

  • thorite — /thawr uyt, thohr /, n. a rare mineral, thorium silicate, ThSiO4, occurring in the form of yellow or black crystals. [1825 35; thor (as in THORIA, THORIUM) + ITE1, modeled on Sw thorit] * * * ▪ mineral       thorium silicate, ThSiO4, one of the… …   Universalium

  • Huttonit — Chemische Formel Th[4+5][SiO4] Mineralklasse Silikate und Germanate 9.AD.35 (8. Auflage: VIII/A.11 10) (nach Strunz) 51.05.03.01 (nach Dana) Kristallsystem monoklin Kristallklasse monoklin prismatisch …   Deutsch Wikipedia

  • thorite — noun a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite • Hypernyms: ↑mineral • Substance Meronyms: ↑thorium, ↑Th, ↑atomic number 90 …   Useful english dictionary

  • thorite — tho•rite [[t]ˈθɔr aɪt, ˈθoʊr [/t]] n. mir a rare radioactive mineral ore, thorium silicate, ThSiO4, occurring as grains and crystals • Etymology: < Sw thorit (1829); see thorium, ite I …   From formal English to slang

  • thorite — [thôr′īt΄] n. [Swed thorit: see THORIUM & ITE1] a rare, usually dark, hard, radioactive mineral, thorium silicate, ThSiO4, that is usually hydrated …   English World dictionary

  • thorite — noun A radioactive mineral, composed mostly of thorium silicate (ThSiO), along with silicates of uranium and the rare earths …   Wiktionary

  • thorite — /ˈθɔraɪt/ (say thawruyt) noun a radioactive mineral, thorium silicate, ThSiO4, occurring as black or yellow crystals. {thor(ium) + ite1} …  

  • chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

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