ijolite

English

Etymology

Derived from the first syllable of the Finnish words Ii-vaara, Iijoki, etc., common as geographical names in Finland (ultimately reflecting Proto-Samic *ijë (night)), and Ancient Greek λίθος (líthos, a stone).

Noun

ijolite (countable and uncountable, plural ijolites)

  1. A rare igneous rock consisting essentially of nepheline and augite.

Further reading

  • “ijolite”, in Mindat.org: Glossary, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026.