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- Brown coalLignite (derived from Latin lignum meaning 'wood'), often referred to as brown coal, [1] is a soft, brown, combustible sedimentary rock formed from naturally compressed peat.en.wikipedia.org/wiki/Lignite
褐煤 - 百度百科
What are the types of coal? | U.S. Geological Survey - USGS.gov
Lignite Coal, Kentucky Geological Survey, University of …
2023年1月5日 · Learn about lignite, the lowest rank of coals, and its physical and chemical changes during coalification. Find out how lignite is defined, classified, and used in the U.S. and other countries.
Lignite | Uses, Formation, Properties | Britannica
Lignite - an overview | ScienceDirect Topics
What is Lignite? - ThoughtCo
2020年1月29日 · Lignite is a soft brown coal that provides low-cost energy for electricity and fertilizer production. Learn about its characteristics, availability, global production, and uses in the U.S.