kernite

kernite
/kerr"nuyt/, n.
a mineral, hydrated sodium borate, Na2B4O7·4H2O, occurring in transparent colorless crystals: the principal source of boron compounds in the U.S.
[1925-30; named after Kern County, California; see -ITE1]

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also called  Rasorite,  

      borate mineral, hydrated sodium borate (Na2B4O7·4H2O), that was formerly the chief source of borax (q.v.). It forms very large crystals, often 60 to 90 centimetres (2 to 3 feet) thick; the largest observed measured 240 by 90 cm. The crystals are colourless and transparent but are usually covered by a surface film of opaque white tincalconite. Kernite is associated with other borate minerals as veins, irregular masses, and crystals embedded in shale, as in Kern County, Calif., and Catamarca province, Argentina. For detailed physical properties, see borate mineral (table).

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Universalium. 2010.

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Look at other dictionaries:

  • Kernite — Catégorie VI : borates[1] Kernite Général …   Wikipédia en Français

  • Kernite — Kernite, also known as rasorite is a hydrated sodium borate hydroxide mineral with formula Na2B4O6(OH)2·3H2O. It is a colorless to white mineral crystallizing in the monoclinic crystal system typically occurring as prismatic to acicular crystals… …   Wikipedia

  • kernite — ☆ kernite [kʉr′nīt΄ ] n. [after Kern County, California, where mined + ITE1] a colorless, soft, monoclinic mineral, hydrous sodium borate, Na2B4O7·4H2O, that is an important ore of boron …   English World dictionary

  • kernite — noun Etymology: Kern Co., Calif. Date: 1927 a colorless to white mineral that consists of a hydrous borate of sodium …   New Collegiate Dictionary

  • kernite — noun A hydrated borate mineral, NaBO(OH), originally discovered in the Mojave Desert …   Wiktionary

  • kernite — ker·nì·te s.f. TS mineral. minerale, di colore bianco, costituito da borato di sodio idrato, che cristallizza nel sistema monoclino, da cui si ricava il boro {{line}} {{/line}} DATA: 1957. ETIMO: der. di Kern, nome di una contea della California …   Dizionario italiano

  • kernite — kern·ite …   English syllables

  • kernite — kern•ite [[t]ˈkɜr naɪt[/t]] n. mir a mineral, hydrated sodium borate, Na2B4O7∙4H2O, occurring in colorless crystals: the principal source of boron • Etymology: 1925–30; after Kern County, Calif.; see ite I …   From formal English to slang

  • kernite — /ˈkɜnaɪt/ (say kernuyt) noun a mineral, hydrated sodium borate, (Na2B4O7.4H2O), occurring in transparent colourless crystals. {named after Kern County, in California, US + ite1} …  

  • kernite — noun a light soft mineral consisting of hydrated sodium borate in crystalline form; an important source of boron • Hypernyms: ↑mineral • Substance Meronyms: ↑boron, ↑B, ↑atomic number 5 …   Useful english dictionary

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