| 单词 | manganese alum |
| 释义 | > as lemmasmanganese alum manganese alum n. (a) Chemistry a double sulphate of potassium and manganese; (b) Mineralogy = apjohnite n. ΘΚΠ the world > the earth > minerals > types of mineral > sulphates > [noun] > alum > other alums spire-alumc1375 stone-butter1796 rock butter1804 manganese alum1842 tschermigite1868 tamarugite1890 1842 T. Graham Elements Chem. i. v. 519 Iron alum, manganese alum, and chrome alum. 1844 J. D. Dana Syst. Mineral. (ed. 2) vi. 217 (heading) Manganese Alum... Fibrous crystallizations like amianthus, with a silken lustre. 1867 C. L. Bloxam Chemistry 326 The sulphate of sesquioxide of manganese combines with sulphate of potash to form manganese-alum. 1896 A. H. Chester Dict. Names Minerals 165 Manganese alum, native manganese alum, called apjohnite. < as lemmas |
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