Standard Lemma guide

laumontite

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

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.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

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

Across languages

Translations

16 source translations are retained for this English entry.

  • Azerbaijani: lomontit — mineral
  • Basque: laumontita — mineral
  • Catalan: laumontita — mineral
  • Dutch: laumontiet — mineral
  • French: laumontite — mineral
  • German: Laumontit — mineral
  • Hungarian: laumontit — mineral
  • Icelandic: laumontít — mineral
  • Italian: laumontite — mineral
  • Persian: لومونتیت — mineral
  • Polish: laumontyt — mineral
  • Russian: ломонтит (lomontit) — mineral
  • Slovak: laumontit — mineral
  • Spanish: laumontita — mineral
  • Swedish: laumontit — mineral
  • Ukrainian: ломонтит (lomontyt) — mineral