camptonite

[kamp-tuh-nahyt]

noun

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

Origin of camptonite

< German (1887), named after Campton, New Hampshire; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019