manganite

manganite
/mang"geuh nuyt'/, n.
1. a gray to black mineral, hydrous manganese oxide, MnO(OH); gray manganese ore.
2. Chem. any of a series of salts containing tetravalent manganese and derived from either of two acids, H4MnO4 or H2MnO3.
[1820-30; MANGAN(ESE) + -ITE1]

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      an ore mineral of manganese, basic manganese oxide [MnO(OH)] that forms dark gray to black crystal bundles or fibrous masses. Important deposits exist at Ilfeld, Ilmenau, Siegen, and Horhausen, Ger.; the Lauron and Aure valleys, in France; St. Just, Cornwall, Eng.; and Michigan and California, U.S. As a manganese ore it ranks after pyrolusite and romanechite, to which it readily alters. For detailed physical properties, see oxide mineral (table).

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Universalium. 2010.

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  • Manganite — Catégorie IV : oxydes et hydroxydes[1] Manganite Hartz Allemagne …   Wikipédia en Français

  • manganite — [ mɑ̃ganit ] n. m. et f. • 1872; de manganèse 1 ♦ N. m. Chim. Oxyde double (MnO2) du bioxyde de manganèse et d un oxyde métallique. 2 ♦ N. f. Minér. Hydroxyde de manganèse naturel, cristallisé en aiguilles, en macles noires ou brunes. ● manganite …   Encyclopédie Universelle

  • Manganite — Man ga*nite, n. 1. (Min.) One of the oxides of manganese; called also {gray manganese ore}. It occurs in brilliant steel gray or iron black crystals, also massive. [1913 Webster] 2. (Chem.) A compound of manganese dioxide with a metallic oxide;… …   The Collaborative International Dictionary of English

  • Manganīte — Manganīte, s. Mangansuperoxyd …   Meyers Großes Konversations-Lexikon

  • manganite — [maŋ′gənīt΄] n. 1. a dark colored, shiny mineral, MnO(HO), that is an ore of manganese; hydrous manganese oxide 2. any of a series of salts that may be considered as derivatives of manganous acid, the hydroxide of tetravalent manganese …   English World dictionary

  • Manganite — This article is about the mineral of formula MnO(OH), for other uses of the term manganite see Manganite (disambiguation) Manganite Manganite, Ilfeld, Thuringia, Germany (size: 5.2×4.1×2.7 cm) Gener …   Wikipedia

  • manganite — manganitas statusas T sritis chemija apibrėžtis Mineralas. formulė MnOOH atitikmenys: angl. manganite rus. манганит …   Chemijos terminų aiškinamasis žodynas

  • manganite — manganitas statusas T sritis chemija formulė M₂MnO₃ atitikmenys: angl. manganite rus. манганит ryšiai: sinonimas – manganatas(IV) sinonimas – trioksomanganatas (2–) …   Chemijos terminų aiškinamasis žodynas

  • Manganite (disambiguation) — This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article. Manganite can refer to: The mineral …   Wikipedia

  • manganite — noun Date: 1827 1. a metallic gray to black mineral MnO(OH) that is a hydroxide and minor ore of manganese 2. any of various unstable salts made by reaction of manganese dioxide with a base …   New Collegiate Dictionary

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