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单词 indigo-copper
释义

> as lemmas

indigo-copper
indigo-copper n. the mineral covelline n.
ΘΚΠ
the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > niccolite group > copper sulphide
blue copper1728
covelline1850
alisonite1859
covellinite1861
indigo-copper1868
1868 J. D. Dana Syst. Mineral. (ed. 5) 83 Covellite,..Indigo-Copper.
1875 R. Hunt & F. W. Rudler Ure's Dict. Arts (ed. 7) III. 914 Indigo-copper, the native proto~sulphide of copper.
extracted from indigon.adj.
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as lemmas
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