Potassium

Potassium is a soft, silvery-white metal found in Galfin. It's a highly reactive element and is not commonly found in its pure form, is found in minerals like Potash and Perlite. In Galfin, researchers use it in alchemy due to its reactivity and ability to ignite easily, as well as its potential to be used in creating magical illumination. It could be used as a component in creating flash powders, flares and fireworks, as well as in alchemical processes that require intense heat or light. It's not commonly used in crafting, due to its reactivity and flammability, making it hard to handle and store. It could be used as a tool in mining and smelting, but only with great care.