Related Clues:

• Seamy stuff?
• Uranium source, e.g.
• For miners it's major
• It's totally unrefined
• Metal on its way to a refinery
• Soft stuff for baby
• Metal in the raw
• Post-shower powder
• Mine treasure
• Apres-bath powder
• Refiner's supply
• Gold container, perhaps
• Stuff to refine
• Subject of an assay test
• It might have a silver lining