Figure 1. Cauca is in a 300 km Mineral Belt that includes Llurimagua and Cascabel in Ecuador and La Colosa in Colombia. Many world-class or giant deposits occur in this trend.

Table 1. Thirty-five vein intercepts in 18 core-holes in La Custodia range from 3.06 to 1195 g Au/t. An additional fifty-one vein intercepts not in the table range from 1.75...