Reference | {Deposit:: Spurr, J. E., Garrey, G. H., and Ball, S. H., 1908, Economic geology of the Georgetown quadrangle, Colorado: U.S. Geological Survey Professional Paper 63, 422 p.}{Deposit:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.}{Deposit:: Lovering, T. S., and Goddard, E. N., 1950, Geology and ore deposits of the Front Range, Colorado: U.S. Geological Survey Professional Paper 223, 319 p.} |