Originally: a mineral substance composed chiefly of sepiolite coloured pink by organic pigments, found in limestone, chalcedony, and opal. Later…
| 单词 | θ7246 |
| 释义 | the world > the earth > minerals > types of mineral > other miscellaneous minerals > [noun] > mineral substances (7) quincite1835 Originally: a mineral substance composed chiefly of sepiolite coloured pink by organic pigments, found in limestone, chalcedony, and opal. Later… atelestite1854 A rare mineral found in deposits of bismuth- and arsenic-bearing minerals and typically occurring as yellowish or green botryoidal aggregates. Cf. rh… adamantoid1885 Mineralogy and Chemistry. In some classifications: a substance resembling diamond in structure or properties (cf. sense B. 1). Now disused. ferozone1888 A mineral substance containing ferrous sulphate and other metal salts formerly used as a precipitant in the treatment of sewage. polarite1889 An insoluble, porous, granular material consisting chiefly of a mixture of iron oxide with other substances, formerly used in filter beds in sewage… petrichor1964 A pleasant, distinctive smell frequently accompanying the first rain after a long period of warm, dry weather in certain regions. Also: an oily… synroc1978 any of various synthetic crystalline materials composed chiefly of oxides of metals and semimetals and devised as sufficiently stable to contain… |
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