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单词 xenotime
释义

Definition of xenotime in English:

xenotime

noun ˈzɛnə(ʊ)tʌɪmˈzēnə-
mass noun
  • A yellowish-brown mineral which occurs in some igneous rocks and consists of a phosphate of yttrium and other rare earth elements.

    Composition: native yttrium phosphate

    Example sentencesExamples
    • Textures of kyanite, xenotime and monazite, and some staurolite and biotite, indicate that peak metamorphic mineral growth occurred after D 2 deformation.
    • Zircon, monazite, xenotime and white mica were extracted from the sample.
    • I dutifully explained that the smoky spots were probably the result of natural irradiation caused by many tiny radioactive mineral grains, possibly monazite or xenotime.
    • Other accessory minerals are apatite, zircon, monazite, huttonite and rare xenotime, uraninite and betafite.
    • Pale brown to yellow xenotime and zircon are abundant as fine crystals up to 2 mm in length in many of the miarolitic granite cavities as well as in pegmatite pockets.

Origin

Mid 19th century: from xeno-, apparently erroneously for Greek kenos 'vain, empty', + timē 'honour' (because it was wrongly supposed to contain a new metal).

 
 

Definition of xenotime in US English:

xenotime

nounˈzēnə-
  • A yellowish-brown mineral which occurs in some igneous rocks and consists of a phosphate of yttrium and other rare earth elements.

    Example sentencesExamples
    • Textures of kyanite, xenotime and monazite, and some staurolite and biotite, indicate that peak metamorphic mineral growth occurred after D 2 deformation.
    • I dutifully explained that the smoky spots were probably the result of natural irradiation caused by many tiny radioactive mineral grains, possibly monazite or xenotime.
    • Other accessory minerals are apatite, zircon, monazite, huttonite and rare xenotime, uraninite and betafite.
    • Zircon, monazite, xenotime and white mica were extracted from the sample.
    • Pale brown to yellow xenotime and zircon are abundant as fine crystals up to 2 mm in length in many of the miarolitic granite cavities as well as in pegmatite pockets.

Origin

Mid 19th century: from xeno-, apparently erroneously for Greek kenos ‘vain, empty’, + timē ‘honor’ (because it was wrongly supposed to contain a new metal).

 
 
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更新时间:2024/12/24 0:27:00