The Pickaxe is a player made tool used to mine. It has limited durability and is a one handed item. It can be equipped in either hand. It is made with 3 Twigs and 1 Flint.
Use:Drag the pickaxe from your inventory into your toolbar at the bottom, then click on the pickaxe icon and when a durability bar shows up (Green bar) it shows you've got it equipt. You can then proceed to press E when near a pile of stone to start mining.