Manganese

Definition of Manganese

Man`ga`nese´
n.1.(Chem.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty (melting point 1244° C), but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic number 25; Atomic weight 54.938 [C=12.011].
Black oxide of manganese
(Chem.) a heavy black powder MnO2, occurring native as the mineral pyrolusite, and valuable as a strong oxidizer; - called also familiarly manganese. It colors glass violet, and is used as a decolorizer to remove the green tint of impure glass.

Related Words

atomic number 25, hausmannite, manganite, metal, metallic element, Mn, psilomelane, pyrolusite, rhodochrosite
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