单词 | purpurite |
释义 | purpuriten. Mineralogy. A mineral which is a phosphate of manganese and iron and occurs as red or purple crystals (sometimes altered to dark brown or black).Formula: (Mn,Fe)PO4. Crystal system: orthorhombic. It differs from heterosite in containing more manganese. ΘΚΠ the world > the earth > minerals > types of mineral > phosphates > [noun] > iron or manganese phosphates hureaulite1831 heterosite1834 triplite1850 zwieselite1861 reddingite1878 triploidite1878 purpurite1905 stewartite1912 phosphoferrite1921 landesite1930 rockbridgeite1949 wolfeite1949 kryzhanovskite1951 strunzite1958 switzerite1967 1905 L. C. Graton & W. T. Schaller in Amer. Jrnl. Sci. 170 146 Chemical analysis shows that the material is a new mineral, being a hydrous manganic ferric phosphate—the only manganic phosphate known. The most striking feature of this mineral is its purple or dark red color, and for this reason it has been named purpurite. 1951 C. Palache et al. Dana's Syst. Mineral. (ed. 7) II. 676 Heterosite and purpurite are secondary minerals formed by oxidation of triphylite and lithiophilite. 2005 Jrnl. Molecular Structure 744–7 830/1 Purpurite gives a purplish brown colour which brings amazing luminosity to dark passages in a painting. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1905 |
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