Copper Ore

Copper Ore is a mineral block that can be found at the same ground as Iron Ore, and is the second most common ore found in the game. It has the same appearance as all the other ores, but with brown pieces of copper inside. It requires a stone pickaxe to mine, and then it has to be smelted on a furnace in order to obtain Copper Ingots It can be used to make copper armor, bronze, and blocks of copper.

Smelting
When smelted on a furnace, you will have 1 copper ingot.

Natrual Occurrence
Copper ingots can be found at ground level close to the same level as Iron. Copper ingots can also be found in Duengons, Strongholds, Nether Fortresses, etc. They will very rarely be on the top of ground level.

'''Note: This has been added to Minecraft after this suggestion was made. Please do not comment saying that copper does not make tools or armor.'''