Alchemical metals
From PotionEmpire Wiki
The alchemical metals are: 
Alchemical Copper, 
Alchemical Gold, 
Alchemical Iron, 
Alchemical Lead, 
Alchemical Mercury and 
Alchemical Silver. Each one of them is found in a distinct ecosystem.
You will need every alchemical metal to complete the Forging Steel Quest.
