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词汇 piemontite
释义

Definition of piemontite in English:

piemontite

noun ˈpiːmɒntʌɪtˈpēmənˌtīt
mass noun
  • A brown or black mineral consisting of a silicate of calcium, aluminium, iron, and manganese.

    红帘石

    Example sentencesExamples
    • It forms a series with clinozoisite and, together with a group of other minerals including zoisite, the allanites, and piemontite, is a dominant member of the epidote group.
    • He reported that material previously said to be piemontite was actually a manganan epidote.
    • The limit of piemontite solid solubility is found near p=1.9 at the above conditions.
    • Since the formation of piemontite is dependant of a high concentration of manganese it is commonly found together with other manganese minerals.
    • Piemontite has beautiful, high-order interference colors.

Origin

Late 19th century: from Italian Piemonte (see Piedmont) + -ite1.

Definition of piemontite in US English:

piemontite

nounˈpēmənˌtīt
  • A brown or black mineral of the epidote group consisting of a silicate of calcium, aluminum, iron, and manganese.

    红帘石

    Example sentencesExamples
    • Piemontite has beautiful, high-order interference colors.
    • It forms a series with clinozoisite and, together with a group of other minerals including zoisite, the allanites, and piemontite, is a dominant member of the epidote group.
    • He reported that material previously said to be piemontite was actually a manganan epidote.
    • Since the formation of piemontite is dependant of a high concentration of manganese it is commonly found together with other manganese minerals.
    • The limit of piemontite solid solubility is found near p=1.9 at the above conditions.

Origin

Late 19th century: from Italian Piemonte (see Piedmont) + -ite.

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