Iron Ore
Iron Ore is an ore that can be found as high as layer 67 (Y = 67), although it is most common below layer 54. Iron Ore can be smelted in a Furnace to make Iron Ingots, which have a large array of uses, making it one of the most useful ores in Minecraft.

Iron Block

Iron Blocks are manufactured by the player. It is made by using a Crafting Table (Workbench) with 9 iron ingots. Iron blocks can be used to construct Iron golems.