Iron ore is one of the 5 raw ores and can be smelted into iron ingots using a burner furnace or an electric furnace. Iron ore in and of itself is useless. It cannot be crafted into anything else and can only be used by a furnace. Having this in your inventory during late stages of the game is useless, and it is usually put into a chest, destroyed using a conveyor-turning contraption, or smelted inside a furnace.
Obtaining Iron Ore Edit
Iron ores are one of the more abundant resources around the map, like copper ore. To obtain, you can either manually hold left click on the ore, or, you can place a burner extractor or electric extractor over the deposit.