Psilomelane
Psilomelane Psi*lom"e*lane, n. [Gr. ? bare + ?, ?, black.] (Min.) A hydrous oxide of manganese, occurring in smooth, botryoidal forms, and massive, and having an iron-black or steel-gray color. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • PSILOMÉLANE — Oxyde hydraté naturel de manganèse observé généralement en concrétions à structures en zones concentriques ou en agrégats microcristallins (les enduits dendritiques sont fréquents). Le psilomélane est noir à l’éclat submétallique. La dureté (4 6) …   Encyclopédie Universelle

  • Psilomelane — Infobox mineral name = Psilomelane category = boxwidth = boxbgcolor = caption = A native sample of psilomelane formula = The general formula Ba(Mn2+)(Mn4+)8O16(OH)4 or as (Ba,H2O)2Mn5O10 Barium Manganese Oxide Hydroxide molweight = 590.03 gm… …   Wikipedia

  • psilomelane — /suy lom euh layn /, n. a common mineral consisting of a mixture of pyrolusite and other oxides of manganese, usually found in black, rounded masses: an ore of manganese. [1825 35; < Gk psiló(s) bare, smooth + mélan, neut. of mélas black] * * *… …   Universalium

  • psilomelane — psilomelanas statusas T sritis chemija apibrėžtis Mineralas. formulė mMnO·MnO₂·nH₂O atitikmenys: angl. psilomelane rus. псиломелан …   Chemijos terminų aiškinamasis žodynas

  • psilomelane — noun Any hard, black hydrous manganese oxide with variable amounts of barium and potassium …   Wiktionary

  • psilomélane — (psi lo mé la n ) s. m. Sorte d oxyde de manganèse naturel …   Dictionnaire de la Langue Française d'Émile Littré

  • psilomelane — psi·lo·mel·ane …   English syllables

  • psilomelane — /saɪloʊˈmɛleɪn/ (say suyloh melayn) noun 1. a common mineral, a hydrated barium manganate, occurring in smooth, black to steel grey, botryoidal or stalactitic forms and in masses; an ore of manganese. 2. any hard massive manganese oxide. {Greek… …   Australian English dictionary

  • psilomelane — noun a mineral consisting of hydrated basic oxide of manganese and barium; a source of manganese • Hypernyms: ↑mineral • Substance Meronyms: ↑manganese, ↑Mn, ↑atomic number 25 …   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

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