Related Clues:

• Forty-niner's quest
• Band of gold?
• See 38-Across
• Bauxite or hematite
• Mesabi Range yield
• Change from a krone
• It lacks refinement
• See 5-Down
• Some can dig it
• Valuable rocks
• Mining locale
• Strike site
• Filling material
• It's found in the ground
• Profitable extraction