You do not need to have a pickaxe or special tool to mine iron. Just approach the outrop and press the interact button to start chipping away at it. Each one can give you three iron, so don’t stop ...

Now, these nodes don't just drop Iron Ore. They also drop Malachite Ore, as well as Earth Crystals occasionally. However, Iron Ore is one of the common drops, so you should be able to get plenty of ...