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词汇 anorthosite
释义

Definition of anorthosite in English:

anorthosite

nounəˈnɔːθəsʌɪtəˈnôrTHəˌsīt
mass nounGeology
  • A granular igneous rock composed largely of labradorite or another plagioclase.

    〔地质〕斜长岩

    Example sentencesExamples
    • The plagioclase crystals would have formed subcircular lenses of anorthosite that punctuated background chromite accumulation.
    • Coarse-grained anorthosite is the predominant rock type in these bodies.
    • Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite.
    • Wood's second audacious - and completely unsubstantiated - claim was that all the lunar highlands were made of the rock anorthosite.
    • An area that contains over 90% anorthosite is currently being quarried near the preserve.

Origin

Mid 19th century: from French anorthose 'plagioclase' + -ite1.

Definition of anorthosite in US English:

anorthosite

nounəˈnôrTHəˌsīt
Geology
  • A plutonic rock composed largely of calcic plagioclase.

    〔地质〕斜长岩

    Example sentencesExamples
    • Coarse-grained anorthosite is the predominant rock type in these bodies.
    • An area that contains over 90% anorthosite is currently being quarried near the preserve.
    • Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite.
    • The plagioclase crystals would have formed subcircular lenses of anorthosite that punctuated background chromite accumulation.
    • Wood's second audacious - and completely unsubstantiated - claim was that all the lunar highlands were made of the rock anorthosite.

Origin

Mid 19th century: from French anorthose ‘plagioclase’ + -ite.

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