gibbsite

gibbsite
/gib"zuyt/, n.
a mineral, hydrated aluminum oxide, Al2O33H2O, occurring in whitish or grayish crystals and masses: an important constituent of bauxite ore.
Also called hydrargillite.
[1815-25; named after George Gibbs (d. 1833), American mineralogist; see -ITE1]

* * *

      the mineral aluminum hydroxide [Al(OH)3] an important constituent of bauxite (q.v.) deposits, particularly those in the Western Hemisphere, where it occurs as white, glassy crystals, earthy masses, or crusts. In significant deposits it is of secondary origin, but small-scale hydrothermal sources are known. Under extreme weathering conditions, it may develop from any aluminous material, especially feldspars and feldspathoids; it may form from these directly or from boehmite or after the intermediate formation of clay minerals. Gibbsite is prominent in bauxites from Arkansas, Jamaica, Suriname, Guyana, Brazil, West Africa, and India. Synthetic gibbsite is made from bauxite or high-alumina materials for use in the production of aluminum metal and alumina chemicals. For detailed physical properties, see oxide mineral (table).

* * *


Universalium. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Gibbsite — Gibbsite, Al(OH)3, is one of the mineral forms of aluminium hydroxide. It is often designated as γ Al(OH)3 (but sometimes as α Al(OH)3 [N.N. Greenwood and A. Earnshaw, Chemistry of Elements , 2nd edition, Butterworth and Heinemann, 1997] .). It… …   Wikipedia

  • Gibbsite — Gibbsite[1] Catégorie IV : oxydes et hydroxydes[2] …   Wikipédia en Français

  • gibbsite — ● gibbsite nom féminin (de G. Gibbs, nom propre) Hydroxyde naturel d aluminium, de formule Al(OH)3, qui constitue une forme fréquente d accumulation de l aluminium dans les sols des pays tropicaux. ● gibbsite (synonymes) nom féminin (de G. Gibbs …   Encyclopédie Universelle

  • Gibbsite — Gibbs ite, n. [Named after George Gibbs.] (Min.) A hydrate of alumina. [1913 Webster] …   The Collaborative International Dictionary of English

  • gibbsite — hidrargilitas statusas T sritis chemija apibrėžtis Mineralas. formulė Al(OH)₃ atitikmenys: angl. gibbsite; hydrargillite rus. гиббсит; гидраргиллит ryšiai: sinonimas – gibsitas …   Chemijos terminų aiškinamasis žodynas

  • gibbsite — noun A mineral with monoclinic crystals, usually white but can have different colors, Al(OH) …   Wiktionary

  • gibbsite — gibbs·ite …   English syllables

  • gibbsite — /ˈgɪbzaɪt/ (say gibzuyt) noun a mineral, hydrated aluminium oxide, Al2O3.3H2O, occurring in whitish or greyish crystals and masses, an important constituent of bauxite ore. {named after G Gibbs, died 1833, US mineralogist. See ite1} …  

  • gibbsite — noun white crystalline mineral consisting of aluminum hydroxide; a constituent of bauxite and a source of alumina • Hypernyms: ↑mineral • Substance Holonyms: ↑bauxite • Substance Meronyms: ↑aluminum hydroxide, ↑aluminium hydroxide, ↑ …   Useful english dictionary

  • Kaolin Deposits of Charentes Basin, France — The geological unit called Charentes basin is composed of Eocene and Oligocene deposits, laid above karstic limestone formations of the Campagnien, in the North of the Aquitaine Basin. The kaolin clays of Charentes belong to this mainly… …   Wikipedia

Share the article and excerpts

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