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manganite

[ mang-guh-nahyt ]

noun

  1. a gray to black mineral, hydrous manganese oxide, MnO(OH); gray manganese ore.
  2. Chemistry. any of a series of salts containing tetravalent manganese and derived from either of two acids, H 4 MnO 4 or H 2 MnO 3 .


manganite

/ ˈmæŋɡəˌnaɪt /

noun

  1. a blackish mineral consisting of basic manganese oxide in monoclinic crystalline form: a source of manganese. Formula: MnO(OH)
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of manganite1

First recorded in 1820–30; mangan(ese) + -ite 1
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Example Sentences

Manganite, or hydroxide of manganese; is brownish-black or iron-black, powder brown, with somewhat of a metallic lustre.

The hydrated form, found native as the mineral manganite, is produced by the spontaneous oxidation of manganous hydroxide.

The sesquioxide is found crystallized in an anhydrous form in braunite, and hydrated in manganite.

The hydrate occurs sometimes in nature as black crystals (manganite).

It is a grey stone, full of crystalline needles, like manganite.

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