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

Pyrosmalite :: Pyrosmalite (n.) A mineral, usually of a pale brown or of a gray or grayish green color, consisting chiefly of the hydrous silicate of iron and manganese; -- so called from the odor given off before the blowpipe..

Manganesic :: Manganesic (a.) Manganic.

Babingtonite :: Babingtonite (n.) A mineral occurring in triclinic crystals approaching pyroxene in angle, and of a greenish black color. It is a silicate of iron, manganese, and lime..

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

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

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..

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..

Zaffer :: Zaffer (n.) A pigment obtained, usually by roasting cobalt glance with sand or quartz, as a dark earthy powder. It consists of crude cobalt oxide, or of an impure cobalt arseniate. It is used in porcelain painting, and in enameling pottery, to produce a blue color, and is often confounded with smalt, from which, however, it is distinct, as it contains no potash. The name is often loosely applied to mixtures of zaffer proper with silica, or oxides of iron, manganese, etc..

Danalite :: Danalite (n.) A mineral occuring in octahedral crystals, also massive, of a reddish color. It is a silicate of iron, zinc manganese, and glucinum, containing sulphur..

Umber :: Umber (n.) A brown or reddish pigment used in both oil and water colors, obtained from certain natural clays variously colored by the oxides of iron and manganese. It is commonly heated or burned before being used, and is then called burnt umber; when not heated, it is called raw umber. See Burnt umber, below..

Knebelite :: Knebelite (n.) A mineral of a gray, red, brown, or green color, and glistening luster. It is a silicate of iron and manganese..

Hubner :: Hubner (n.) A mineral of brownish black color, occurring in columnar or foliated masses. It is native manganese tungstate..

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

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

Willemite :: Willemite (n.) A silicate of zinc, usually occurring massive and of a greenish yellow color, also in reddish crystals (troostite) containing manganese..

Permanganate :: Permanganate (n.) A salt of permanganic acid.

Manganesate :: Manganesate (n.) A manganate.

Manganesium :: Manganesium (n.) Manganese.

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

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