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laumontite

American

[loh-mon-tahyt] / loʊˈmɒn taɪt /

noun

a white zeolite mineral, chiefly hydrated silicate of aluminum and calcium.

Etymology

Origin of laumontite

1795–1805; named after F. P. N. G. de Laumont (1747–1834), French mineralogist who discovered it; -ite ¹

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.