单词 | braunite |
释义 | brauniten. Mineralogy. An anhydrous oxide of manganese, a brittle dark brownish-black mineral occurring both crystallized and massive. ΘΚΠ the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > other oxides > other oxides of manganese magnus1640 brownstone1780 manganite1827 braunite1839 manganoso-manganic oxide1845 bog manganese1875 manganese oxide1882 manganosite1884 manganostibite1887 1839 Penny Cycl. XIV. 380/2 Braunite..before the blow~pipe melts and effervesces slightly with borax. 1866 H. E. Roscoe Lessons Elem. Chem. xxi. 189 Manganese sesquioxide..occurs in nature as the mineral braunite. This entry has not yet been fully updated (first published 1888; most recently modified version published online June 2018). < n.1839 |
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