Related Clues:

• Cuprite, e.g.
• Smithsonite, e.g.
• '–ite' compound, often
• Lode deposit
• It's of miner concern?
• Comstock load
• Load from a lode
• Matter you mine
• Steel foundry input
• Mine matter
• It may have a silver lining?
• Pyromorphite, e.g.
• Mine car contents
• Valuable rock
• Rock with potential