Scorching heliodor is a yellow crystal found on the planet Bryche, the setting of Project Aleutian. It is found primarily within the borders of Scivatan. It gets its name from the large amount of heat that it gives off, and it is a sought-after heat source for steam powered machines.  Other combustible fuel sources, such as wood and coal, are also used as a fuel source for steam engines on Bryche, but they can’t match the compactness and reliability of scorching heliodor.  

Scorching heliodor has lots of common day-to-day uses such as providing heat and light in both homes and factories as well as clocks for keeping time. It is also used to power larger steam engines on seafaring ships, airships, and locomotives.