Heatstone

Heatstone (熱鉱石) is a mineral mined by the dwarves of the Dwarf Kingdom.

Description
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.

Abilities
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.

Trivia

 * 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.