| 单词 | iron flint |
| 释义 | > as lemmasiron flint iron flint n. [after German Eisenkiesel (1770 or earlier)] now rare a form of flint or chert containing ferric oxide; a piece of this material. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > quartz > other quartzes sinople1794 white acre1796 iron flint1804 siderite1808 gold quartz1850 hyalomicte1853 sapphire quartz1868 cotterite1877 coesite1954 capped quartz- 1804 R. Jameson Syst. Mineral. I. 134 Iron Flint. Eisenkiesel.—Werner... Its colour is yellowish brown. 1836 London & Edinb. Philos. Mag. 9 357 At Purfleet the name given to these flints is iron flints. 1843 J. E. Portlock Rep. Geol. Londonderry 226 Silicate of Iron..occurs associated with Iron-flint at Tullybrick, Ballynascreen. 1921 J. A. Audley Silica & Silicates i. 20 Eisenkiesel, iron flint, or ferruginous quartz, encloses iron oxide and hydroxides, which give it a yellow or red colour. < as lemmas |
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