“…FIGURE 13 substantiates the sequence gold-copper-lead/zinc from New England to Alabama; it is based on mineral investigations resource maps for gold,93 copper,90 lead,96 and zinc. 37 FIGURE 14 is a plot of major copper and lead-zinc deposits in the Cordillera of North America. Evidently, the statistical distribution of these deposits is quite similar to that in South America.…”