单词 | anthraxolite |
释义 | anthraxoliten. Geology. A form of hard bitumen resembling coal, occurring in veins and cavities in sedimentary rocks (esp. oil shales). ΚΠ 1871 E. J. Chapman Minerals & Geol. Central Canada (ed. 2) ii. 146 As it differs essentially by these conditions of occurrence from anthracite proper, the name anthraxolite has been given to it, but simply as a convenient term for present use. 1934 Amer. Mineralogist 19 428 The anthraxolite-bearing veins belong to a rather widespread system of fault-veins cutting both Animikie sediments and intrusive diabase. 1994 D. L. Southwick Short Contrib. Geol. Minn. 40/2 Anthraxolite samples from the Biwabik Iron Formation..are black and have a pronounced vitreous luster and conchoidal fracture. 2011 N.Y. Times (National ed.) 29 July c26/2 Their rock matrix..is often full of ‘drusy’: cavities lined with tiny quartz crystals, blackened by a carbon material called anthraxolite. This is a new entry (OED Third Edition, June 2016; most recently modified version published online December 2021). < n.1871 |
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