Manganese

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(FRENCH) (A hard brittle gray metal or its black oxide) ម៉ង់ហ្គាណែហ្ស

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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.