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pyrolusite 軟錳礦; 軟鐵礦 軟錳礦; 軟鐵礦 pyrolusite n 1: a mineral consisting of manganese dioxide; an important source of manganese Pyrolusite \Pyr`o*lu"site\, n. [Pyro- Gr. ? to loose, or ? a
loosing.] (Min.) 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). [1913 Webster]
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