Related Clues:

• Comstock output
• Band of gold?
• See 38-Across
• Bauxite or hematite
• Civil rights leader Wells
• Wyo. neighbor
• Mesabi Range yield
• Change from a krone
• Greek peak
• It lacks refinement
• See 5-Down
• Some can dig it
• Valuable rocks
• 'Princess ___' (1884 premiere)
• It's found in the ground