| 单词 | grey ore |
| 释义 | > as lemmasgrey ore grey ore n. Mining (now rare) a copper sulphide mineral of a grey colour; spec. = chalcocite n. at chalco- comb. form ; cf. grey copper n. ΘΚΠ the world > the earth > minerals > ore > [noun] > metal ore > copper ore > types of red copper1507 misy1543 grey copper1590 yellow ore1630 grey orea1728 pitch ore1776 red copper ore1776 fahlerz1796 tile-ore1823 cuprite1850 lettsomite1850 velvet copper-ore1850 yellows1851 meneghinite1852 peacock copper1858 peacock ore1858 horseflesh ore1868 plush-copper1881 the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > chalcocite group > copper sulphide grey orea1728 redruthite1849 marcylite1853 chalcocite1868 a1728 J. Woodward Attempt Nat. Hist. Fossils Eng. (1729) i. 181 A grey Marcasite... It consists mainly of Sulphur and Arsenick, and seems to hold a little Bismuth. The Miners call this Grey-Ore. 1809 A. Henry Trav. & Adventures Canada 212 I found several veins of copper-ore, of that kind which the miners call gray ore. 1907 Queensland Govt. Mining Jrnl. 14 Dec. 641/2 The contractors sinking the shaft..struck a lode at 200 ft., consisting of grey ore, red oxide and carbonites. 2011 W. L. Pohl Econ. Geol. i. 58 (caption) Grey ore in veinlets is largely chalcocite due to supergene enrichment, which reaches 800 m below surface. < as lemmas |
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