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单词 pitch coal
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pitch coal
pitch coal n. a dense black variety of lignite with a conchoidal fracture.
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the world > the earth > minerals > types of mineral > hydrocarbon minerals > [noun] > bitumen > bituminous earth or shale
ampelite1601
pitch coal1754
Kimmeridge coal1761
jet rock1798
Kupferschiefer1830
torbanite1858
1754 Zimmerman in T. G. Smollett tr. Select Ess. Commerce, Agric., Mines, Fisheries 262 The pitch-coal is firm and compact in its texture.., with a shining polished surface, like pitch when it is broken.
1899 Science 27 Jan. 138/1 J. S. Diller mentioned the pitch-coal of the Coos Bay lignite Mines, Oregon, which cuts the lignite in veins.
1993 J. C. Young in H. Y. Lee & C. W. Chung Korean Options in Changing Internat. Order x. 158 Major import items were pitch coal and coke.
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