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词汇 amphibole
释义

Definition of amphibole in English:

amphibole

nounˈamfɪbəʊlˈæmfəˌboʊl
mass noun
  • Any of a class of rock-forming silicate or aluminosilicate minerals typically occurring as fibrous or columnar crystals.

    闪石

    acid rocks consist mostly of quartz and feldspars, with a little mica or amphibole
    Example sentencesExamples
    • During obduction, mantle-derived magmas most likely evolved to granitic compositions by assimilation of sediments and by fractional crystallization of amphibole, feldspar, titanite and allanite.
    • The greenschist-facies overprint resulted in the growth of actinolitic amphiboles, plagioclase and titanite at the expense of pyroxene and rutile or ilmenite.
    • The other two silicates are possibly an amphibole and a member of the smectite group.
    • They contain sulfide minerals as well as metamorphic minerals that include cordierite, gahnite, epidote, garnet, amphiboles, schorl, and many others.
    • Associated with the fayalite are quartz, amphibole, and magnetite.

Origin

Early 19th century: from French, from Latin amphibolus 'ambiguous' (because of the varied structure of these minerals), from Greek amphibolos, from amphi- 'both, on both sides' + ballein 'to throw'.

Definition of amphibole in US English:

amphibole

nounˈæmfəˌboʊlˈamfəˌbōl
  • Any of a class of rock-forming silicate or aluminosilicate minerals typically occurring as fibrous or columnar crystals.

    闪石

    acid rocks consist mostly of quartz and feldspars, with a little mica or amphibole
    Example sentencesExamples
    • The other two silicates are possibly an amphibole and a member of the smectite group.
    • The greenschist-facies overprint resulted in the growth of actinolitic amphiboles, plagioclase and titanite at the expense of pyroxene and rutile or ilmenite.
    • During obduction, mantle-derived magmas most likely evolved to granitic compositions by assimilation of sediments and by fractional crystallization of amphibole, feldspar, titanite and allanite.
    • They contain sulfide minerals as well as metamorphic minerals that include cordierite, gahnite, epidote, garnet, amphiboles, schorl, and many others.
    • Associated with the fayalite are quartz, amphibole, and magnetite.

Origin

Early 19th century: from French, from Latin amphibolus ‘ambiguous’ (because of the varied structure of these minerals), from Greek amphibolos, from amphi- ‘both, on both sides’ + ballein ‘to throw’.

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