• Frank D., J. Galloway, & K. Assmus. 2005. The life cycle of a mineral deposit—a teacher’s guide for hands-on mineral education activities, US Geological Survey General Information Product 17, 40 pp.
  • Skinner, B. J. 1989. Mineral Resources of North America, pp. 575 - 584, in: A. W. Bally, & A. R. Palmer (eds.), The Geology of North America—An Overview, The Geology of North America, vol. A, Geological Society of America, Boulder, CO.

State-based Resources