| 单词 | black manganese |
| 释义 | > as lemmasblack manganese a. A black mineral substance used from ancient times in glass-making and as a component in coloured ceramic glazes, and now in many industrial processes. Also: a coloured ceramic glaze made from this. Also black manganese, †glass-maker's manganese.Black manganese is now known to consist usually of a mixture of various oxides, of which the chief component is manganese( iv) oxide, MnO2 (the mineral pyrolusite). The name manganese is now restricted to the metal (sense 3) in chemical usage; its older application survives only in commercial and industrial use, esp. in ceramics. ΘΚΠ the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > rutile and uranite groups A02 > manganese dioxide brownstone1657 manganese1662 magnesia1677 soap of glass1815 pyrolusite1828 varvicite1829 polianite1849 manganese dioxide1866 pelagite1876 manganese oxide1882 society > occupation and work > materials > derived or manufactured material > glass and glass-like materials > [noun] > glass-making materials metal1589 saffora1604 massacote1622 frit1662 polverine1662 rochetta1662 tarso1662 Spanish ashes1725 bollito1753 glass-maker's manganese1797 soap of glass1815 cullet1817 muff1820 batch1874 1662 C. Merrett tr. A. Neri Art of Glass xiii. 28 Take Manganese of Piemont [It. Manganese del Piemonte], for this is the best of all the Manganeses at this day known in the art of glass. 1672 Sir T. Browne Pseudodoxia Epidemica (ed. 6) ii. iii. 72 In the making of Glass, it hath been an ancient practice to cast in pieces of magnet, or perhaps manganes. 1677 R. Plot Nat. Hist. Oxford-shire 79 Magnesia (in the Glass-houses, called Manganese). 1755 Gentleman's Mag. Dec. 540/2 Our Manganese, supposed an iron ore, appears from some experiments to contain no iron. 1797 Encycl. Brit. X. 528/1 This substance, commonly called black or glass~maker's manganese, is scarcely any other thing than the calx of a new semimetal. 1864 Chambers's Encycl. VI. 301/2 The binoxide, or peroxide, is the black manganese of commerce, and the pyrolusite of mineralogists. 1867 C. L. Bloxam Chemistry 325 In commerce pyrolusite is known as black manganese, or simply manganese. 1871 ‘G. Eliot’ Middlemarch (1872) I. xii. 189 Why had the Almighty carried off his two wives both childless, after he had gained so much by manganese and things? 1962 3rd Internat. Art Treasures Exhib. (Victoria & Albert Mus.) 62/2 Two Astbury figures in creamware splashed with manganese. 1971 L. A. Boger Dict. World Pottery & Porcelain 211/2 Many tones of purple are prepared alone from manganese or in association with other oxides. 1990 North West Tel. (Port Hedland, Austral.) 19 Sept. 2/3 There were more than 30 semi trailers carting manganese into Port Hedland. < as lemmas |
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