Definition of piemontite in English:

piemontite

Line breaks: pie¦mont|ite
Pronunciation: /ˈpiːmɒntʌɪt
 
/

noun

[mass noun]
  • A brown or black mineral consisting of a silicate of calcium, aluminium, iron, and manganese.
    More example sentences
    • 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.

Origin

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

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