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Triploidite :: Triploidite (n.) A manganese phosphate near triplite, but containing hydroxyl instead of fluorine..

Rhodochrosite :: Rhodochrosite (n.) Manganese carbonate, a rose-red mineral sometimes occuring crystallized, but generally massive with rhombohedral cleavage like calcite; -- called also dialogite..

Permanganic :: Permanganic (a.) Pertaining to, or designating, one of the higher acids of manganese, HMnO4, which forms salts called permanganates..

Dialogite :: Dialogite (n.) Native carbonate of manganese; rhodochrosite.

Spiegel Iron :: Spiegel iron () A fusible white cast iron containing a large amount of carbon (from three and a half to six per cent) and some manganese. When the manganese reaches twenty-five per cent and upwards it has a granular structure, and constitutes the alloy ferro manganese, largely used in the manufacture of Bessemer steel. Called also specular pig iron, spiegel, and spiegeleisen..

Braunite :: Braunite (n.) A native oxide of manganese, of dark brownish black color. It was named from a Mr. Braun of Gotha..

Manganite :: Manganite (n.) A compound of manganese dioxide with a metallic oxide; so called as though derived from the hypothetical manganous acid.

Manganesian :: Manganesian (a.) Manganic.

Piedmontite :: Piedmontite (n.) A manganesian kind of epidote, from Piedmont. See Epidote..

Spessartite :: Spessartite (n.) A manganesian variety of garnet.

Manganite :: Manganite (n.) One of the oxides of manganese; -- called also gray manganese ore. It occurs in brilliant steel-gray or iron-black crystals, also massive..

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..

Hauerite :: Hauerite (n.) Native sulphide of manganese a reddish brown or brownish black mineral.

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)..

Manganese :: 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..

Manganesious :: Manganesious (a.) Manganous.

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..

Polianite :: Polianite (n.) Manganese dioxide, occurring in tetragonal crystals nearly as hard as quartz..

Mangan :: Mangan (n.) See Mangonel.

Manganesium :: Manganesium (n.) Manganese.

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