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camptonite

American

[kamp-tuh-nahyt] / ˈkæmp təˌnaɪt /

noun

a lamprophyric rock occurring in dikes and composed of labradorite, pyroxene, sodic hornblende and olivine.

Etymology

Origin of camptonite

< German (1887), named after Campton, New Hampshire; see -ite ¹

Example Sentences

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Typically they occur as dikes or as thin sills, often in association with nepheline-syenite; and they seem to bear a complementary relationship to certain types of lamprophyre, such as camptonite and monchiquite.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" by Various

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