agpaite

noun

ag·​pa·​ite

ˈag-pə-ˌīt

plural -s

: any of a group of feldspathoid rocks (such as naujaites, lujauvrites, or kakortokites) from Ilimausak, Greenland, which differ from normal nephelite-syenites in having alumina in excess of the alkalies

agpaitic

¦ag-pə-¦i-tik

adjective

Word History

Etymology

Agpa, locality in southern Greenland + -ite entry 1

First Known Use

1913, in the meaning defined above

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