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brown coal
brown coal Brown to brownish-black fossil fuel of low rank, intermediate between peat and lignite. It is soft, with a dull lustre and earthy texture, and contains the remains of plants; has a high moisture content (45–66%), and decomposes and darkens on dehydration. Its ash content is 1–5%, and its calorific value varies from low in soft, high-moisture types to high in those resembling lignites. It comes mainly from east and central Europe, where it is mined from open-cast pits.
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AILSA ALLABY and MICHAEL ALLABY. "brown coal." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "brown coal." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O13-browncoal.html AILSA ALLABY and MICHAEL ALLABY. "brown coal." A Dictionary of Earth Sciences. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-browncoal.html |
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brown coal
brown coal see lignite . |
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Cite this article
"brown coal." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "brown coal." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-X-browncoa.html "brown coal." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-browncoa.html |
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