Pinnacle Silver and Gold (PINN ) has discovered additional polymetallic mineralization at the Potrero project in Mexico, following a LiDAR survey and subsequent ground follow-up work on shafts, adits and prospecting pits.
The LiDAR survey was flown over the entire 1,074 hectare property and confirmed known structural trends, outlined previously unknown structures, and identified a total of six shafts, 64 adits and 51 prospecting pits on the two claim blocks comprising the project.
Prospecting on the northern El Potrero claim block has now resulted in the discovery of silver-rich veins, with assays up to 1,159 grams per tonne silver.
On the northern El Potrero claim group, a new series of adits on northeast-trending vein structures, dubbed the “Minas Nuevas”, returned assays up to 0.252 grams per tonne gold, 1,159 grams per tonne silver, 4.72% lead, and 0.1% zinc over 0.35 metres.
Meanwhile, on the Maria Fernanda 2 concession, continued field work has extended the previously announced silver-lead-zinc mineralization along strike. Here, the ”Paulina Breccia” zone has been traced for approximately 400 metres to the northeast with 0.217 grams per tonne gold, 47 grams per tonne silver, 0.65% lead, 0.71% zinc over 0.4 metres, and 0.232 grams per tonne gold, 50 grams per tonne silver, 0.48% lead and 0.77% zinc over 0.6 metres.
Also on the MF2 block and approximately 650 metres along strike to the southwest from the Paulina Breccia, an artisanal mine called “Las Guasimas” has yielded assays up to 3.21 grams per tonne gold, 349 grams per tonne silver, 3.49% lead and 5.30% zinc from dump grabs.
Collectively, the Paulina Breccia and Guasimas mine extend the apparent strike length of the vein system on MF2 to approximately 1,100 metres.
“These exciting discoveries of high-grade gold-silver-lead-zinc mineralization not only validate the effectiveness of the LiDAR survey, but are demonstrating the district scale potential of the mineralizing system at El Potrero,” said Robert Archer, Pinnacle’s chief executive.
“From the processing plant at the northeast point of the project to the new Guasimas zone in the southwest is approximately 10 kilometres, and we now have both gold-silver and gold-silver-lead-zinc mineralizing systems present. All of the recently discovered north-east south-west trending polymetallic mineralization is in sharp contrast to the purely gold and silver north-west-south-east trending mineralization on the northern Dos de Mayo vein system and probably represents a completely different age of hydrothermal activity. As all four of the operating mines surrounding the project are polymetallic, and the gold-silver-lead-zinc veins at the Topia Mine are just four kilometres away from MF2, finding this style of mineralization across the Potrero property just underscores how prolific this area really is.”
View from Vox
This work has enhanced the district scale potential of the project, and shows that Pinnacle is on the right track with El Potrero. Some of the grades intercepted are highly encouraging, and the mineralisation looks to be prolific across the property.