gray manganese ore

gray manganese ore
manganite.

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  • gray manganese ore — 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… …   The Collaborative International Dictionary of English

  • gray manganese ore — noun : manganite 1 * * * manganite …   Useful english dictionary

  • Manganese — Not to be confused with Magnesium. This article is about the chemical element. For the ghost town, see Manganese, Minnesota. For the steamship, see SS Manganese. chromium ← manganese → iron ↑ Mn ↓ Tc …   Wikipedia

  • Iron ore — Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, deep purple, to rusty red. The iron itself is usually found in the …   Wikipedia

  • Red manganese — Red Red, a. [Compar. {Redder} ( d?r); superl. {Reddest}.] [OE. red, reed, AS. re[ a]d, re[ o]d; akin to OS. r[=o]d, OFries. r[=a]d, D. rood, G. roht, rot, OHG. r[=o]t, Dan. & Sw. r[ o]d, Icel. rau[eth]r, rj[=o][eth]r, Goth. r[ a]uds, W. rhudd,… …   The Collaborative International Dictionary of English

  • Red-lead ore — Red Red, a. [Compar. {Redder} ( d?r); superl. {Reddest}.] [OE. red, reed, AS. re[ a]d, re[ o]d; akin to OS. r[=o]d, OFries. r[=a]d, D. rood, G. roht, rot, OHG. r[=o]t, Dan. & Sw. r[ o]d, Icel. rau[eth]r, rj[=o][eth]r, Goth. r[ a]uds, W. rhudd,… …   The Collaborative International Dictionary of English

  • 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;… …   Universalium

  • 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

  • manganite — man•ga•nite [[t]ˈmæŋ gəˌnaɪt[/t]] n. 1) mir 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 •… …   From formal English to slang

  • Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

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