Related Clues:

• Smelting input
• Miner's matter
• Panner's quest
• Refinement candidate
• Vein glory
• Native metal
• Penny : pound :: ___ : krone
• Seam sample
• It runs in veins
• Copper container, perhaps
• Vein pursuit?
• It's picked out of a mine
• Something to be assayed
• 45D homonym
• Mined rocks