Why is my iron disappearing in Minecraft? [duplicate]
Solution 1:
You mentioned you had a wooden pickaxe, this will not work for Iron Ore.
To quote the wiki:
Iron ore will drop as an item if mined by a stone pickaxe or better. If mined by any other tool, it will drop nothing.
In order to get the Iron ore as an item drop you need to make a stone pickaxe. You can do this the same way you would make a wooden pickaxe just with stone along the top instead of wood.
Source: http://minecraft.gamepedia.com/Iron_Ore