nephelinite

[ nef-uh-luh-nahyt ]
/ ˈnɛf ə ləˌnaɪt /

noun Petrography.

a fine-grained, dark rock of volcanic origin, essentially a basalt containing nepheline but no feldspar and little or no olivine.

Origin of nephelinite

First recorded in 1860–65; nepheline + -ite1

OTHER WORDS FROM nephelinite

neph·e·li·nit·ic [nef-uh-luh-nit-ik] /ˌnɛf ə ləˈnɪt ɪk/, adjective

Words nearby nephelinite

Example sentences from the Web for nephelinite

British Dictionary definitions for nephelinite

nephelinite
/ (ˈnɛfɪlɪˌnaɪt) /

noun

a fine-grained basic laval rock consisting of pyroxene and nepheline