| 单词 | purple copper |
| 释义 | > as lemmaspurple copper purple copper n. (also purple copper ore) a term applied to various minerals consisting of cuprous and ferric sulphides, esp. Bornite.extracted from coppern.1purple copper ΚΠ 1830 Philos. Trans. (Royal Soc.) 120 402 The relative power of conducting galvanic electricity possessed by many of the metalliferous minerals... Conductors. Copper nickel, Purple Copper, [etc.]. 1864 H. Watts Dict. Chem. II. 78 Purple copper does not give off sulphur when ignited in a test-tube. 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 122 Copper-ores,..purple copper (variegated or peacock ore, bornite, sulphide of copper and iron). < as lemmas |
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