Related Clues:

• Abundant source
• Load from a lode
• Matter you mine
• Mine matter
• It may have a silver lining?
• Pyromorphite, e.g.
• Mine car contents
• Mother __
• Valuable rock
• Mine seam
• Forty-niner's dream
• Rock with potential
• What some seams are made of
• Gold digger's target
• It may pan out