Vulcore

Vulcore is a mineral found in the upper crust of Unus Solum. It can be refined into combustible fuels that act as the main source of energy for machines in the planet. Vulcore is found in mountaneous regions, especially close to volcanos- hence it's name which translates to "volcanic heart" in hoffnung language.

It has a distinct blue hue and vulcore fuels typically burn with blue flames as well. Soil and rock in regions rich in this mineral will also exhibit a blueish tinge