Laumontite
Laumontite Lau"mont*ite, n. [From Dr. Laumont, the discoverer.] (Min.) A mineral, of a white color and vitreous luster. It is a hydrous silicate of alumina and lime. Exposed to the air, it loses water, becomes opaque, and crumbles. [Written also {laumonite}.] [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Laumontite — Catégorie IX : silicates[1] Laumontite mine Himalaya États Unis …   Wikipédia en Français

  • Laumontite — is a mineral, one of the zeolite group. Its molecular formula is Calcium(AluminiumSilicon|2Oxygen|6)2 middot;4H2O, a hydrated calcium aluminium silicate. Potassium or sodium may substitute for the calcium but only in very small amounts.It is… …   Wikipedia

  • laumontite — ● laumontite nom féminin (de Laumont, nom propre) Aluminosilicate hydraté naturel de calcium, du groupe des zéolites …   Encyclopédie Universelle

  • laumontite — /loh mon tuyt/, n. a white zeolite mineral, chiefly hydrated silicate of aluminum and calcium. [1795 1805; named after F. P. N. G. de Laumont (1747 1834), French mineralogist who discovered it; see ITE1] * * * ▪ mineral  common hydrated calcium… …   Universalium

  • laumontite — noun A mineral, of a white color and vitreous luster, with the chemical formula CaAlSiO middot;4HO. It is a hydrous silicate of alumina and lime. Exposed to the air, it loses water, becomes opaque, and crumbles …   Wiktionary

  • laumontite — lau·mont·ite …   English syllables

  • laumontite — …   Useful english dictionary

  • laumonite — Laumontite Lau mont*ite, n. [From Dr. Laumont, the discoverer.] (Min.) A mineral, of a white color and vitreous luster. It is a hydrous silicate of alumina and lime. Exposed to the air, it loses water, becomes opaque, and crumbles. [Written also… …   The Collaborative International Dictionary of English

  • Laumontit — (Museo Geominero de Madrid) Chemische Formel CaAl2Si4O12 · 4 H2O Mineralklasse Gerüstsilikat Zeolithgruppe 09.GB.10 (nach Strunz) 77.01 …   Deutsch Wikipedia

  • List of minerals K-M (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

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