Lumps of coal can be obtained by mining Coal Ore.
It is used for fuel in a Furnace and can also be crafted into Torches and Coal Blocks.
As a crafting indrigent
||Input → Output
||Coal Lump + Stick
|If placed, makes the environment a bit brighter; can be placed on the floor, on walls or ceilings.
||Used as fuel (lasts a bit longer than 9 coal lumps) or as a decorational block.