Related Clues:

• Hydrocarbon fuel
• Load from a lode
• Matter you mine
• Fossil fuel
• Franklin stove fuel
• Mine matter
• It may have a silver lining?
• Pyromorphite, e.g.
• Mine car contents
• Valuable rock
• Symbol of blackness
• Rock with potential
• What some seams are made of
• It may pan out
• Miner's bonanza