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单词 pyrolusite
释义

Definition of pyrolusite in English:

pyrolusite

noun ˌpʌɪrə(ʊ)ˈluːsʌɪtˌpaɪroʊˈlusaɪt
mass noun
  • A black or dark grey mineral with a metallic lustre, consisting of manganese dioxide.

    软锰矿

    Example sentencesExamples
    • Acicular crystals and crystal aggregates of pyrolusite are found in vugs in the pegmatites of the district.
    • It never occurs as a free element, but only in ores such as pyrolusite, manganite, psilomelane, and rhodochrosite.
    • The ore, a mixture of ‘psilomelane’ and pyrolusite with much manganiferous limonite, contains masses of cerussite.
    • Scheele produced chlorine by treating the mineral pyrolusite with hydrochloric acid (HCl).

Origin

Early 19th century: from pyro- 'fire, heat' + Greek lousis 'washing' (because of the mineral's use in decolorizing glass).

Definition of pyrolusite in US English:

pyrolusite

nounˌpīrōˈlo͞osītˌpaɪroʊˈlusaɪt
  • A black or dark gray mineral with a metallic luster, consisting of manganese dioxide.

    软锰矿

    Example sentencesExamples
    • Acicular crystals and crystal aggregates of pyrolusite are found in vugs in the pegmatites of the district.
    • The ore, a mixture of ‘psilomelane’ and pyrolusite with much manganiferous limonite, contains masses of cerussite.
    • Scheele produced chlorine by treating the mineral pyrolusite with hydrochloric acid (HCl).
    • It never occurs as a free element, but only in ores such as pyrolusite, manganite, psilomelane, and rhodochrosite.

Origin

Early 19th century: from pyro- ‘fire, heat’ + Greek lousis ‘washing’ (because of the mineral's use in decolorizing glass).

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更新时间:2024/12/27 17:34:00