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glauconite

noun
glau·​co·​nite | \ ˈglȯ-kÉ™-ËŒnÄ«t How to pronounce glauconite (audio) \

Definition of glauconite

: a mineral consisting of a dull green earthy iron potassium silicate occurring in greensand
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Other Words from glauconite

glauconitic \ ËŒglȯ-​kÉ™-​ˈni-​tik How to pronounce glauconitic (audio) \ adjective

Examples of glauconite in a Sentence

Recent Examples on the Web

 The greenish material is glauconite … an authigenic mineral that typically forms in marine shelf settings, thought to reflect very slow sedimentation rates. — Brian Romans, WIRED, "Friday Field Foto #45: Glauconitic sandstone," 20 Mar. 2008

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'glauconite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of glauconite

1836, in the meaning defined above

History and Etymology for glauconite

German Glaukonit, irregular from Greek glaukos

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More from Merriam-Webster on glauconite

Britannica.com: Encyclopedia article about glauconite

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