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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

The researchers manipulated a steel gray mineral called manganite, used to build magnetic hard discs in computers.

Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc.

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