Mineral exposure represents erosional dissection of a high andes terrace that was intruded by a co-eval magmatic body partly capped by a bimodal breccia/dikework dome (Fig 13). Topography shows remnants of La Frontera, Azufreras Tortas and Del Rio topography but Cerro Desfiladero is 500meters too high (Fig 14). Remnants of the dikework dome host high silica reef/dikes that carry +100ppb gold, +100 ppm molybdenum as “magmatic seepage products” around it and on adjacent terraces. The dome shows network of mutually crosscutting light and dark dikes and white cored as well as black cored dikes containing contrasting material within. Generally, good copper seems to leak out from under the dome. Drilling has just barely tested it.