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 {laumonite}.] [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • laumonite — lau·mon·ite …   English syllables

  • laumonite — noun see laumontite …   Useful english dictionary

  • 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} …   The Collaborative International Dictionary of English

  • 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

  • Laumontita — General Categoría Minerales tectosilicatos Clase 9.GB.10 (Strunz) Fórmula química …   Wikipedia Español

  • metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …   Universalium

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

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