History of La Verde
Copper mineralization was first identified on the Sierra del Marqués (the intrusive is now called La Verde) in the early 1900s. Mining on a small scale was undertaken intermittently for the first part of the 20th century. The La Verde property has seen new interest since the 1960s due to the global search for low grade, large tonnage porphyry copper deposits.
The La Verde property is located in west central Mexico, approximately 320 kilometres west of Mexico City and hosts porphyry copper style mineralization. The property consists of 1 concession (known as a claim in Canada) totalling approximately 7,904 ha. Within the concession mineralization is hosted within a mid-Tertiary granodiorite/quartz monzonite intrusive complex roughly 5.5 kilometres long, 1 kilometre wide and up to 750 metres above mean sea level (msl) known as the Sierra del Marqués intrusive complex. Since the 1960’s several medium to large scale mining companies have completed several millions of dollars worth of exploration work on the property. Historic exploration work included geological, geochemical and geophysical surveys as well as 80,000 metres of drilling.
This exploration work identified two large mineralized zones known as the East Hill and West Hill deposits. The East Hill zone is a combination of 4 mineralized intrusive phases that conform to a typical copper porphyry system. The West Hill zone is a series of east-west striking chalcopyrite-rich veins that are focused within an elliptical-shaped body in plan and may represent the surface expression of a typical porphyry system. Although the La Verde property has been explored aggressively over many years, there are several geochemical and geophysical anomalies that have not been adequately tested. These anomalies, plus geological features such as an abundance of mineralized intrusive breccias, alteration styles and sulphide mineral assemblages, suggest that the Sierra del Marques intrusive complex may represent the upper portion of a much larger porphyry copper system.