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词汇 anorthite
释义

Definition of anorthite in English:

anorthite

nounəˈnɔːθʌɪtəˈnôrˌTHīt
mass noun
  • A calcium-rich mineral of the feldspar group, typically white, occurring in many basic igneous rocks.

    钙长石

    Example sentencesExamples
    • The relative effect of anorthite on predicted melt compositions is indicated.
    • Late phases are mainly calcic amphiboles of magnesio-hornblende composition and plagioclases with very low anorthite contents.
    • Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite.
    • Lunar settlers could extract oxygen from the minerals ilmenite and anorthite.

Origin

Mid 19th century: from an-1 + Greek orthos 'straight' + -ite1.

Definition of anorthite in US English:

anorthite

nounəˈnôrˌTHīt
  • A calcium-rich mineral of the plagioclase feldspar group, typically white, occurring especially in limestones metamorphosed by contact with an igneous intrusion.

    钙长石

    Example sentencesExamples
    • The relative effect of anorthite on predicted melt compositions is indicated.
    • Lunar settlers could extract oxygen from the minerals ilmenite and anorthite.
    • Late phases are mainly calcic amphiboles of magnesio-hornblende composition and plagioclases with very low anorthite contents.
    • Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite.

Origin

Mid 19th century: from an- + Greek orthos ‘straight’ + -ite.

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