单词 | melanochroite |
释义 | † melanochroiten. Mineralogy. Obsolete. = phoenicochroite n. ΘΚΠ the world > the earth > minerals > types of mineral > chromates > [noun] > lead chromate red lead of Siberia1788 red lead ore1788 melanochroite1835 phoenicochroite1849 1835 Rec. Gen. Sci. 1 273 Melanochroite.—This mineral is found in..the Uralian Mountains, in limestone. 1857 J. D. Dana Man. Mineral. (new ed.) 284 Melanochroite is another chromate of lead, containing 23.64 of chromic acid, and having a dark red colour. This entry has been updated (OED Third Edition, June 2001; most recently modified version published online December 2018). < n.1835 |
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