From Dark and Darker Wiki

In order to obtain Ores you need to interact with Ore nodes using a Pickaxe. Ores can be crafted into Ingot and Powder.

Name Price Price / Slot Size Item Achieve Total AP / Slot Size Inventory Size Max Stack Size
20.520.5-32x26
10.2510.25-1.52x26
20.52x25
20.530.75-4.52x26
10.2510.25-1.52x26
20.530.75-4.52x26