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Fire-safe Not magma-safe

Wikipedia article

This article is about the current version of DF.

One of the two mineral sources of fuel, lignite is found in veins in sedimentary layers. When processed at a smelter or magma smelter, one unit of lignite produces 5 units of coke. If done at a regular smelter, this processing requires one pre-existing unit of fuel (either charcoal or coke), leaving a net production of 4 fuel.

Lignite is flammable - if exposed to fire or magma, an item made of lignite will burn for the better part of a year before wearing away. Exposure to water (including rain) will extinguish it, unless it happens to be stored in a bin.

Although no more materially valuable than any generic stone, by default lignite is considered an economic stone and it will be reserved for coke production unless changed in the z-Stone sub-menu. It otherwise behaves as an ordinary stone. If you don't need it to produce coke, you can use it to produce goods with a mason or stonecrafter.

Lignite, in all its glory.

See also[edit]