“pyrolusite”的英文意思_释义_用法

单词

pyrolusite

释义

pyrolusite Min.|paɪərəʊˈl(j)uːsaɪt|
[ad. Ger. pyrolusit (Haidinger 1827), f. Gr. πυρο- (pyro-) + λοῦσ-ις washing + -ite¹: from its use, when heated, for discharging colour from glass.]
Native dioxide of manganese, MnO₂, a common ore of black or dark-grey colour and metallic lustre.
1828Edin. Jrnl. Sc. IX. 304 An account of pyrolusite or prismatic manganese ore.1839H. T. De la Beche Rep. Geol. Cornwall, etc. xv. 610 Pyrolusite, or grey and black ore, containing from 70 to 99 per cent. of peroxide of manganese.1868Dana Min. (ed. 5) 166 Pyrolusite parts with its oxygen at a red heat, and is extensively employed for discharging the brown and green tints of glass. Hence..whimsically entitled by the French le savon des verriers.

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