Say the word “coal” and most people think glossy black, slow-burning rocks, the hard stuff that generations of miners dug out of the Appalachian Mountains in the eastern United States, Shaanxi Province in central China, or Jharkhand in eastern India.
Lignite, while technically a kind of coal, does not fit that image. First of all, it is brown, and crumbly. Lignite burns so fast it just seems to disintegrate. Geologists classify lignite as coal but really it is just peat that never quite hardened. It seems unfinished, like half-fired clay.
