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)

Word History and Origins

Origin of manganite¹

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

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg