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camptonite

American  
[kamp-tuh-nahyt] / ˈkæmp təˌnaɪt /

noun

  1. 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; -ite 1