The conversation between human and AI assistant.
Can you get gold from a bar of iron by using flux, a torch and a furnace (Parkes process)?
Can you tell me more about the cupellation process?
Sure, the cupellation process involves heating the mixture of lead, iron, and flux in a furnace until the lead oxidizes and is absorbed into a porous cupel. This leaves behind a bead containing mostly gold and some silver. The bead is then further refined to obtain pure gold.