| 单词 | iron cap |
| 释义 | > as lemmasiron cap iron cap n. [after French chapeau de fer; compare German eiserner Hut (for both see iron hat n.)] Mining = gossan n. a; cf. iron hat n. 2. ΘΚΠ the world > the earth > minerals > mineral deposits > [noun] > outcrop of vein or stratum crop1686 gossan1778 iron hat1811 blossom1819 iron cap1823 blossom-rock1871 tailings1881 top-crop1889 1823 tr. A. von Humboldt Geognostical Ess. Superposition Rocks 331 It exhibits..a very remarkable analogy with the earthy ochraceous (but not argentiferous) masses which the miners of Europe call vulgarly by the name of iron cap [Fr. chapeau de fer]. 1911 Chambers's Jrnl. Mar. 166/1 The indication of a deposit of pyrites is the appearance of an outcrop of oxide of iron more or less honeycombed. This is called the ‘iron cap’, or in Cornwall ‘gossan’. 1999 Rock & Gem Dec. 54/2 You'll find scheelite in any limestone area cut by granite, particularly in the vicinity of what's known as..iron cap. < as lemmas |
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