Endeavour Silver was the only company to release results from drilling campaigns in Mexico during the week. The drill program focus is “to further define the geometry of multiple, sub-vertical, mineralized feeder structures and the mineralized manto that was initially outlined by historical drilling”. The program targeted the Casas Blancas, Danna and Victoria veins, as well as the Manto Pitarrilla.

In the press release Endeavour states the simplified geology of the Pitarrilla deposits includes three mineralized domains: 1) Upper volcanic rocks of mainly andesitic composition. 2) Conglomerate (Manto Pitarrilla), flat lying, strata-bound with massive replacement mineralization. 3) Lower marine sediments. “In addition, at least four sulphide mineralized veins (Casas Blancas, Victoria, Danna, and Palmito) and two sulphide mineralized dykes (Cuchara and Pena) have been identified. Drilling has confirmed that all structures originate below the marine sediments, extend through Manto Pitarrilla, and into the upper volcanics. These feeder structures remain open at depth”.

As mineralization is of intermediate sulfidation epithermal character and open at depth in sedimentary rocks, the question arises if it will continue into the skarn higher temperature phase found in other large deposits of the Mexican highlands.