Definition of olivine in English:

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olivine

Pronunciation: /ˈäləˌvēn/

noun

An olive-green, gray-green, or brown mineral occurring widely in basalt, peridotite, and other basic igneous rocks. It is a silicate containing varying proportions of magnesium, iron, and other elements.
Example sentences
  • Basalt is a fine-grained igneous rock that is primarily composed of the iron- and magnesium-rich minerals pyroxene and olivine and calcium-rich plagioclase feldspar.
  • Gem-quality olivine (magnesium iron silicate), known as peridot, is an oily olive-green colour.
  • The most common phenocryst silicate phases are olivine, plagioclase and augite, typically, although not always, appearing in that order.

Origin

Late 18th century: from Latin oliva (see olive) + -ine1.

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