单词 | lettsomite |
释义 | lettsomiten. Mineralogy. Now disused. = cyanotrichite n. at cyano- comb. form 1. 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 > sulphates > [noun] > sulphates of two elements > copper-aluminium lettsomite1850 velvet copper-ore1850 1850 J. Percy in Philos. Mag. 36 100 The name Lettsomite has been assigned to this mineral at the request of Mr. [H. J.] Brooke. 1883 Encycl. Brit. XVI. 402 Lettsomite..[occurs] in tufts of capillary crystals. 1920 Gloss. Mining & Mineral Industry 721/2 Velvet copper ore, lettsomite. This entry has been updated (OED Third Edition, September 2011; most recently modified version published online March 2022). < n.1850 |
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