boracite

boracite
/bawr"euh suyt', bohr"-/, n.
a strongly pyroelectric mineral, a borate and chloride of magnesium, Mg6Cl2B14O26, occurring in white or colorless cubic crystals or fine-grained masses.
[1800-10; borac- (s. of BORAX1) + -ITE1]

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      colourless, glassy borate mineral, magnesium chloroborate (Mg3B7O13Cl). It has been found as crystals embedded in sedimentary deposits of anhydrite, gypsum, and halite. A massive variety occurs as nodules in the salt-dome deposits at Stassfurt, Ger., where it has been mined as a source of boron. For detailed physical properties, see borate mineral (table).

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Universalium. 2010.

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  • Boracite — is a magnesium borate chloride mineral with formula: Mg3B7O13Cl. It occurs as blue green, colorless, gray, yellow to white crystals in the orthorhombic pyramidal crystal system. Boracite also shows pseudo isometric cubical and octahedral forms.… …   Wikipedia

  • boracite — ● boracite nom féminin (de borax) Chloroborate naturel de magnésium. boracite [bɔʀasit] n. f. ÉTYM. XIXe; in Littré; de borax. ❖ ♦ Minér …   Encyclopédie Universelle

  • Boracite — Bo ra*cite, n. (Min.) A mineral of a white or gray color occurring massive and in isometric crystals; in composition it is a magnesium borate with magnesium chloride. [1913 Webster] …   The Collaborative International Dictionary of English

  • boracite — s. f. [Mineralogia] Borato de magnésia natural.   ♦ Grafia no Brasil: boracita …   Dicionário da Língua Portuguesa

  • boracite — [bôr′ə sīt΄] n. [< BORAX + ITE1] a very hard, brittle, orthorhombic mineral, magnesium borate, Mg3B7O13Cl, formed by the evaporation of salt water: it has a strong pyroelectric property …   English World dictionary

  • boracite — boracitas statusas T sritis chemija apibrėžtis Mineralas. formulė (Mg,Fe,Mn)₃[Cl|B₇O₁₃] atitikmenys: angl. boracite rus. борацит …   Chemijos terminų aiškinamasis žodynas

  • boracite — noun A mixed chloride and borate of magnesium that occurs as a white to green crystalline evaporite, with the chemical formula MgBOCl …   Wiktionary

  • boracite — (bo ra si t ) s. f. Substance vitreuse qu on trouve dans les carrières de plâtre (sous borate de magnésie). ÉTYMOLOGIE    Borax …   Dictionnaire de la Langue Française d'Émile Littré

  • boracite — pl.f. boraciti …   Dizionario dei sinonimi e contrari

  • boracite — bo·ra·cite …   English syllables

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