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单词 purpurite
释义

purpuriten.

Brit. /ˈpəːpjᵿrʌɪt/, U.S. /ˈpərp(j)əˌraɪt/
Origin: A borrowing from Latin, combined with an English element. Etymons: Latin purpura , -ite suffix1.
Etymology: < classical Latin purpura purple (see purpure n.) + -ite suffix1.
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).
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n.1905
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