Zacatecas Silver Expands Oso Negro Vein Systems in Sonora
Event summary
- Zacatecas Silver completed Phase Two sampling at Oso Negro, Sonora, identifying additional vein extensions in Prospecto and Tere systems.
- 391 rock-chip grab samples collected, with veins up to 3 meters wide and multiphase textures indicative of low sulphidation epithermal systems.
- 20 drill pad locations identified; ecological studies completed for SEMARNAT permit application.
- Phase One sampling returned high grades (up to 14.8 g/t Au and 2,340 g/t Ag) across 156 samples.
The big picture
Zacatecas Silver’s Phase Two sampling at Oso Negro reinforces the project’s potential as a high-grade epithermal system. The expansion of vein systems and preparation for drilling align with broader industry trends of exploring near-surface, low-sulphidation targets in Mexico’s prolific mining belts. Success here could position Zacatecas Silver as a competitive player alongside MAG Silver and Fresnillo PLC in the region.
What we're watching
- Drilling Timelines
- The pace at which Zacatecas Silver secures SEMARNAT permits and commences drilling will determine the speed of resource validation.
- Mineralization Potential
- Whether the extensive sulphidic quartz veins identified in Phase Two translate into high-grade mineralization at depth.
- Strategic Positioning
- How Oso Negro's development compares to neighboring projects in Sonora, particularly those of Coeur Mining and Fortuna Silver.
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