Month: August 2015
Minera Alamos Inc.: 2015 Los Verdes Work Plan
Defiance Continues to Intercept Wide Zones of Mineralization at San Acacio, Zacatecas
Impact Silver 2Q 2015 Results
Starcore Produces 4,694 Equivalent Gold Ounces in Fiscal Q4
USPR Provides Update on Solidaridad Initial 11 Drill Holes from Its 2015 Drilling Campaign
Differential erosion
Selective erosion of softer materials is not always natural, as mankind activities also tend to favor the removal of the less competent rocks. Those 4 meters tall spikes in the picture are in a “cantera verde” (building stone) quarry near Oaxaca City in Mexico. These were spared mining due to silicification and minor quartz veining along a structure.