B. S. Butler

1877

• Notes on the Unaweep copper district, Colorado
• The ore deposits of Utah
• Alunite
• Geology and ore deposits of the San Francisco and adjacent district, Utah
• Geology and ore deposits of the Tombstone district, Arizona
• Ore deposits of Utah
• Relation of the ore deposits of the southern Rocky mountain region to the Colorado plateau
• The Climax molybdenum deposit, Colorado
• The copper deposits of Michigan