Definition of manganese

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Manganese (n.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty, but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8..

Lern More About Manganese

Wadd :: Wadd (n.) An earthy oxide of manganese, or mixture of different oxides and water, with some oxide of iron, and often silica, alumina, lime, or baryta; black ocher. There are several varieties..
Permanganic :: Permanganic (a.) Pertaining to, or designating, one of the higher acids of manganese, HMnO4, which forms salts called permanganates..
Karpholite :: Karpholite (n.) A fibrous mineral occurring in tufts of a straw-yellow color. It is a hydrous silicate of alumina and manganese.
Dendrite :: Dendrite (n.) A stone or mineral on or in which are branching figures resembling shrubs or trees, produced by a foreign mineral, usually an oxide of manganese, as in the moss agate; also, a crystallized mineral having an arborescent form, e. g., gold or silver; an arborization..
Eosphorite :: Eosphorite (n.) A hydrous phosphate of alumina and manganese. It is generally of a rose-pink color, -- whence the name..
Manganiferous :: Manganiferous (a.) Containing manganese.
Rhodochrosite :: Rhodochrosite (n.) Manganese carbonate, a rose-red mineral sometimes occuring crystallized, but generally massive with rhombohedral cleavage like calcite; -- called also dialogite..
Columbite :: Columbite (n.) A mineral of a black color, submetallic luster, and high specific specific gravity. It is a niobate (or columbate) of iron and manganese, containing tantalate of iron; -- first found in New England..
Pyrolusite :: Pyrolusite (n.) Manganese dioxide, a mineral of an iron-black or dark steel-gray color and metallic luster, usually soft. Pyrolusite parts with its oxygen at a red heat, and is extensively used in discharging the brown and green tints of glass (whence its name)..
Wolframite :: Wolframite (n.) Tungstate of iron and manganese, generally of a brownish or grayish black color, submetallic luster, and high specific gravity. It occurs in cleavable masses, and also crystallized. Called also wolfram..
Metal :: Metal (n.) An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than acid properties, as contrasted with the nonmetals, or metalloids. No sharp line can be drawn between the metals and nonmetals, and certain elements partake of both acid and basic qualities, as chromium, manganese, bismuth, etc..
Psilomelane :: Psilomelane (n.) A hydrous oxide of manganese, occurring in smooth, botryoidal forms, and massive, and having an iron-black or steel-gray color..
Manganic :: Manganic (a.) Of, pertaining to resembling, or containing, manganese; specif., designating compounds in which manganese has a higher valence as contrasted with manganous compounds. Cf. Manganous..
Dialogite :: Dialogite (n.) Native carbonate of manganese; rhodochrosite.
Lithiophilite :: Lithiophilite (n.) A phosphate of manganese and lithium; a variety of triphylite.
Sienna :: Sienna (n.) Clay that is colored red or brown by the oxides of iron or manganese, and used as a pigment. It is used either in the raw state or burnt..
Rhodonite :: Rhodonite (n.) Manganese spar, or silicate of manganese, a mineral occuring crystallised and in rose-red masses. It is often used as an ornamental stone..
Triploidite :: Triploidite (n.) A manganese phosphate near triplite, but containing hydroxyl instead of fluorine..
Tephroite :: Tephroite (n.) A silicate of manganese of an ash-gray color.
Manganesium :: Manganesium (n.) Manganese.
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