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What is the composition of brown coal (lignite)?

People have called it black gold, but according to chemistry, this is a misnomer. Gold in not found in coal.

Composition of lignite in Hohenmölsen
Proportionate contents in brown coal (lignite) from the Profen Coal Mine in Hohenmölsen, Saxony-Anhalt (Average from November 2017 to January 2018)

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