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The dwarves use this curious metal like coal, and their refineries and smithies consume vast quantities of them. Thus, one could say that heatstones are a central part of dwarven life. Heatstones become the replacement of wood and serve the subterranean race in all manners. It is mined primarily for heating, illumination, and cooking.
Heatstones are a special kind of metal. If one struck them with a very hard metal, mithril at the barest minimum, they would produce intense heat.
- The Azerlisia Mountains have large deposits of this mineral.
- It was suspected to be one of the World Items, known as Caloric Stone, but the storyline in Mass for the Dead disproves that theory. In the game, it is a unique mineral native to the New World.