Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A mineral, of a white color and vitreous luster, with the chemical formula CaAl2Si4O12·4H2O. It is a hydrous silicate of alumina and lime. Exposed to the air, it loses water, becomes opaque, and crumbles.

from the GNU version of the Collaborative International Dictionary of English

  • n. 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.

from The Century Dictionary and Cyclopedia

  • n. A hydrous silicate of aluminium and calcium.

Etymologies

Named after the discoverer François Pierre Nicholas Gillet de Laumont (1747–1834) as lomonite, renamed as laumonite in 1809 and as laumontite in 1821. +‎ -ite (Wiktionary)

Examples

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Comments

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  • A white zeolitic mineral with a vitreous luster. In air this hydrous silicate of alumina and lime dehydrates and crumbles.

    January 22, 2008