Lignite is a saft, broun, combustible, sedimentary rock formed frae naiturally compressed peat. It is conseedert the lawest rank o coal due tae its relatively law heat content. It haes a carbon content aroond 60–70 percent. It is mined aw aroond the warld an is uised awmaist exclusively as a fuel for steam-electric pouer generation, but is an aa mined for its germanium content in Cheenae.
- Kopp, Otto C. "Lignite" in Encyclopædia Britannica