Related Clues:

• Contents of a lode-bearing wall?
• Line made with a needle
• Source of gold
• Valuable deposit
• Rock hound's find, perhaps
• Clothing closure
• Tram contents
• Underground asset
• Discovery in a seam
• Smeltery material
• Rip site, often
• Nickel source
• Mineral bearing rock
• Line of pants
• Smelting need