Heulandite
Heulandite Heu"land*ite, n. [After Heuland, an English mineralogist.] (Min.) A mineral of the Zeolite family, often occurring in amygdaloid, in foliated masses, and also in monoclinic crystals with pearly luster on the cleavage face. It is a hydrous silicate of alumina and lime. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Heulandite — Catégorie IX : silicates[1] Heulandite Ca Drio le Pale, Italie (5x4.5 cm) …   Wikipédia en Français

  • Heulandite — is the name of a series of tecto silicate minerals of the zeolite group. Prior to 1997, heulandite was recognized as a mineral species, but a reclassification in 1997 by the International Mineralogical Association changed it to a series name,… …   Wikipedia

  • heulandite — ⇒HEULANDITE, subst. fém. MINÉR. Silicate hydraté naturel d alumine et de chaux, cristallisé dans les cavités des roches volcaniques. La stilbite, qui cristallise en prisme rhomboïdal droit, offre dans ses caractères extérieurs tant d analogie… …   Encyclopédie Universelle

  • *heulandite — ● heulandite nom féminin (de H. Heuland, nom propre) Aluminosilicate hydraté naturel de calcium, appartenant à la famille des zéolites …   Encyclopédie Universelle

  • heulandite — [hyo͞o′lən dīt΄] n. [named (1822) after Henry Heuland, Eng mineralogist] a semihard, lightweight, monoclinic zeolite, (Na,Ca) 4 6Al6 (Al,Si) 4Si26O72·24H2O …   English World dictionary

  • heulandite — /hyooh leuhn duyt /, n. a white or transparent, colorless mineral of the zeolite family, hydrous calcium aluminum silicate, CaAl2Si7O18·6H2O, occurring in basic volcanic rocks in the form of crystals with a pearly luster. [1815 25; named after… …   Universalium

  • heulandite — noun A common mineral of the zeolite group with monoclinic crystals, the most usual form being heulandite Ca (Ca,Na)Al(Al,Si)SiO·12HO …   Wiktionary

  • heulandite — noun Etymology: Henry Heuland, 19th century English mineral collector Date: 1822 a zeolite consisting of a hydrous aluminosilicate of sodium and calcium …   New Collegiate Dictionary

  • heulandite — (entrée créée par le supplément) (eu lan di t ) s. f. Terme de minéralogie. Silicate double d alumine et de chaux hydraté, cristallisant en prismes obliques …   Dictionnaire de la Langue Française d'Émile Littré

  • heulandite — heu·land·ite …   English syllables

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