Definitions
from The Century Dictionary.
- noun A hydrous silicate of aluminium and calcium.
from the GNU version of the Collaborative International Dictionary of English.
- noun (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.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A
mineral , of a white color and vitreous luster, with thechemical formula Ca Al 2Si 4O 12·4H2O. It is a hydroussilicate ofalumina and lime. Exposed to the air, it loses water, becomesopaque , and crumbles.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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
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Examples
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mollusque commented on the word laumontite
A white zeolitic mineral with a vitreous luster. In air this hydrous silicate of alumina and lime dehydrates and crumbles.
January 22, 2008