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dumortierite

American

[doo-mawr-tee-uh-rahyt, dyoo-] / duˈmɔr ti əˌraɪt, dju- /

noun

a mineral, aluminum borosilicate.

dumortierite British

/ djuːˈmɔːtɪəˌraɪt /

noun

a hard fibrous blue or green mineral consisting of hydrated aluminium borosilicate. Formula: Al 7 O 3 BO 3 (SiO 4 ) 3

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of dumortierite

1880–85; < French, named after Eugène Dumortier, 19th-century French paleontologist; see -ite ¹

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023