cassiterite


cassiterite
/keuh sit"euh ruyt'/, n.
a brown or black mineral, tin dioxide, SnO2, that crystallizes in the tetragonal system; tinstone: the principal ore of tin.
[1855-60; < Gk kassíter(os) tin + -ITE1]

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also called  Tinstone,  

      heavy, metallic, hard tin dioxide (SnO2) that is the major ore of tin (tin processing). It is colourless when pure, but brown or black when iron impurities are present. Commercially important quantities occur in placer deposits, but cassiterite also occurs in granite and pegmatites. Early in the 15th century, the cassiterite veins in Saxony and Bohemia were mined for tin; peak production occurred there in the 17th century. In the 18th and much of the 19th centuries, the very large vein deposits of Cornwall were the major source of tin. Today most of the world's cassiterite is mined in Malaysia, Indonesia, Bolivia, Nigeria, Myanmar (Burma), Thailand, and parts of China; other countries produce smaller amounts. For detailed physical properties, see oxide mineral (table).

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Universalium. 2010.

Look at other dictionaries:

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  • Cassiterite — Cassitérite Cassitérite Catégorie III : oxydes et hydroxydes Cassiterite Mines de Panasqueira, Portugal (8.2x5cm) …   Wikipédia en Français

  • cassitérite — [ kasiterit ] n. f. • 1832; gr. kassiteros « étain » ♦ Minér. Oxyde d étain naturel (SnO2); principal minerai d étain. ● cassitérite nom féminin (grec kassiteros, étain) Oxyde d étain naturel. cassitérite [kasiteʀit] n. f. ÉTYM. 1832; …   Encyclopédie Universelle

  • Cassiterite — Cas*sit er*ite, n. [Gr. ? tin.] (Min.) Native tin dioxide; tin stone; a mineral occurring in tetragonal crystals of reddish brown color, and brilliant adamantine luster; also massive, sometimes in compact forms with concentric fibrous structure… …   The Collaborative International Dictionary of English

  • cassiterite — s. f. 1.  [Mineralogia] Mineral de que se extrai o estanho. 2. Estanho oxidado. 3. Bióxido de estanho.   ♦ Grafia no Brasil: cassitarite …   Dicionário da Língua Portuguesa

  • cassiterite — [kə sit′ər īt΄] n. [< Gr kassiteros, tin + ITE1] a very hard and heavy, brown or black mineral, tin dioxide, SnO2, the chief ore of tin …   English World dictionary

  • Cassiterite — Infobox mineral name = Cassiterite category = boxwidth = boxbgcolor = imagesize = caption = Cassiterite crystals formula = SnO2 molweight = color = purple, wine, black, reddish brown or yellow habit = Pyramidic, prismatic system = tetragonal; 4/m …   Wikipedia

  • cassiterite — noun Etymology: French cassitérite, from Greek kassiteros tin Date: 1858 a brown or black mineral that consists of tin dioxide and is the chief source of metallic tin called also tinstone …   New Collegiate Dictionary

  • cassiterite — cas·si·te·rì·te s.f. TS mineral. minerale tetragonale costituito da biossido di stagno da cui si estrae lo stagno {{line}} {{/line}} DATA: 1875. ETIMO: dal fr. cassitérite, dal gr. kassíteros 2stagno s.m …   Dizionario italiano

  • cassiterite — kasiteritas statusas T sritis chemija apibrėžtis Mineralas. formulė SnO₂ atitikmenys: angl. cassiterite; tin stone rus. касситерит; оловянный камень …   Chemijos terminų aiškinamasis žodynas


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