Iron Ore

Iron Ore is a mineral block that can be smelted into Iron Ingots using a Furnace. Iron Ore is fairly common, and can be found easily in caves, often alongside Coal Ore. Iron can be used to craft the second strongest tier of tools and armor, after Diamond, which is much more difficult to obtain.

Spawning
In Infinite Worlds though, Iron can be found commonly due to the addition of Caves. Iron Ore can be found in Levels 1-64. It can be found in Mineral Veins of 3-8 blocks or more.

Smelting

 * Iron Ore + Any Fuel = 1 Iron Ingot

Trivia

 * Iron Ore is the second most common ore after Coal.
 * Iron Ore requires at least a stone pickaxe or above to mine.
 * Iron Ore can never drop the ingot, and must be smelted like Gold Ore.
 * It can rarely also be found above ground near exposed areas of stone.