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单词 feldspathoid
释义

Definition of feldspathoid in English:

feldspathoid

noun ˈfɛl(d)spəˌθɔɪdˈfeldspəˌTHoid
Geology
  • Any of a group of minerals chemically similar to feldspar but containing less silica, such as nepheline and leucite.

    〔地质〕似长石

    Example sentencesExamples
    • The three commonest feldspathoids are leucite, nepheline, and sodalite.
    • The change from incompatible to compatible behavior heralds the onset of significant plagioclase (or feldspathoid) precipitation/removal.
    • Afghanite occurs as small, typically colorless transparent crystals associated with a wide variety of feldspathoids in volcanic ejecta collected in the general Mount Vesuvius area, Italy.

Derivatives

  • feldspathoidal

  • adjectivefɛl(d)spəˌˈθɔɪd(ə)l
    Geology
    • Salic magmas ranged widely from silicic to feldspathoidal and from peraluminous to peralkaline.

Definition of feldspathoid in US English:

feldspathoid

nounˈfeldspəˌTHoid
Geology
  • Any of a group of minerals chemically similar to feldspar but containing less silica, such as nepheline and leucite.

    〔地质〕似长石

    Example sentencesExamples
    • Afghanite occurs as small, typically colorless transparent crystals associated with a wide variety of feldspathoids in volcanic ejecta collected in the general Mount Vesuvius area, Italy.
    • The change from incompatible to compatible behavior heralds the onset of significant plagioclase (or feldspathoid) precipitation/removal.
    • The three commonest feldspathoids are leucite, nepheline, and sodalite.
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更新时间:2024/9/21 15:40:23