any of certain blue minerals containing copper; esp. (a) = azurite, n. (also blue copper ore); (b) = covelline, n.
| 单词 | θ6660 |
| 释义 | the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > niccolite group > copper sulphide (5) blue copper1728 any of certain blue minerals containing copper; esp. (a) = azurite, n. (also blue copper ore); (b) = covelline, n. covelline1850 A native indigo-blue sulphide of copper; often called blue or indigo copper. alisonite1859 A copper and lead sulphide mineral of uncertain identity, perhaps a mixture. covellinite1861 = main sense. indigo-copper1868 the mineral covelline, n. |
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