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词汇 actinolite
释义

Definition of actinolite in English:

actinolite

noun akˈtɪnəlʌɪt
mass noun

  • A green mineral of the amphibole group containing calcium, magnesium, and iron and occurring chiefly in metamorphic rocks and as a form of asbestos.

    阳起石

    Example sentencesExamples
    • Calcic amphiboles, including hornblende and actinolite are abundant, and probably are alteration products, which also include albite, orthoclase and rare pyrite.
    • The presence of several amphibole minerals, such as tremolite, actinolite, anthophyllite, was confirmed.
    • They have a mineralogical association of quartz, diopside, actinolite, plagioclase and K-feldspar.
    • Kyanite, microcline, zircon, monazite and opaque minerals are variably present with epidote, actinolite and chlorite being present as secondary alteration minerals.
    • Amosite, fibrous anthophyllite, fibrous tremolite, fibrous actinolite, and crocidolite are amphiboles, double-chain silicates, which observed microscopically look like sharp needles.

Origin

Late 18th century: from Greek aktis, aktin- 'ray' + lithos 'stone' (because of the ray-like crystals).
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