Iron Ore
Unrefined iron with impurities. Can be refined to a iron ingot in a furnace.
Overview
Iron Ore is a basic resource found mainly in cave biomes. It is one of the most important early-to-midgame materials because it is the raw input for making 

Once smelted, Iron Ingot is used in the construction of several advanced structures, including military buildings such as 


Iron Ore can be frustrating to locate in sufficient quantities, since it does not always appear abundantly where you need it. When local deposits are scarce, importing it is a practical option to keep production moving instead of delaying key upgrades and buildings.
- Found mainly in cave biomes.
- Smelted in the Furnace into Iron Ingot.
- Needed for military buildings and the Bathhouse.
- Valuable enough that it is often worth importing if nearby supply is limited.
Official description
Unrefined iron with impurities. Can be refined to a iron ingot in a furnace.