Coal is a black colored ore primarily used to craft most pickaxes, torches, tombstones and the first 3 levels of Mining Operations. It was the first ore to be added in Azure Mines, despite the game name. It spawns at a common rate and can be found anywhere below 2m.
- In real life, coal is a combustible sedimentary rock that is black to brownish-black in color.
- Coal is a material you need to obtain to craft nearly every pickaxe.