| manganese |
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. &hand; An alloy of manganese with iron (called ferromanganese) is used to increase the density and hardness of steel. It colors glass violet, and is used as a decolorizer to remove the green tint of impure glass. ...
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