Andina begins field assessment of Mantau target

Executive Summary

• Andina Copper Corp. has initiated a field assessment of the Mantau copper-gold project in the Antofagasta region of northern Chile, marking a new exploration phase alongside preparations for its Piuquenes and Cobrasco projects.
• The Mantau project sits on a 4,500-hectare tenement package with historical surface sampling returning grades up to 28.6% copper and 5.91 g/t gold, and is located in close proximity to significant discoveries by Marimaca Copper and Antofagasta PLC.
• The current work program includes reconnaissance mapping, rock chip sampling, drone-based photogrammetry, and the evaluation of geophysical techniques such as magnetics, induced polarization, and audiomagnetotellurics to advance the target.

Key Details

• Project Location: Mantau copper-gold target in the Antofagasta region, northern Chile, within the low-altitude Coastal Cordillera.
• Tenure: 4,500-hectare tenement package.
• Geological Potential: Potential for stratabound (Manto) and iron oxide copper/gold style mineralization.
• Historical Data: Limited previous surface rock chip sampling around historical workings returned grades up to 28.6% copper and 5.91 grams per tonne gold.
• Proximity to Neighbors:
  • Adjoins tenements hosting Marimaca Copper's recent Pampa Medina Norte sulphide copper discovery.
  • Approximately 20 km southwest is Marimaca Copper's Mod deposit (1 million tonnes contained copper).
  • Approximately 20 km east is Antofagasta PLC's Cachorro discovery (~250 Mt of 1.26% Cu and 4 g/t silver).
• Current Work Program:
  • Comprehensive review of historical work.
  • Exploration team on-site conducting reconnaissance mapping and rock chip sampling of historical occurrences and alteration zones defined in Aster spectral imagery.
  • Preparation of a detailed geochemical orientation survey to optimize future sampling techniques and assay methodology.
  • Drone-based aerial photogrammetry over the extent of project concessions.
  • Detailed lithogeochemical sampling of all rock types to establish background values and pathfinder geochemistry.
  • Evaluation of cost-effective geophysical techniques, including close-spaced magnetics surveys (ground or drone-based).
  • Assessment of induced polarization and audiomagnetotelluric techniques for potential follow-up data acquisition.
• Strategic Context: CEO Joseph van den Elsen noted this is an "exciting, highly prospective third leg" within the portfolio, occurring as the company advances preparations for the 2025/26 field season at Piuquenes and plans to recommence drilling at Cobrasco. The company is also pursuing a dual listing on the TSX-V and ASX.

Notable Quotes

• "As we continue to advance preparations for the 2025/26 field season at Piuquenes and recommencement of drilling at Cobrasco, we are very excited to commence initial assessment of the Mantau Cu-Au target located in the Tier 1 address of Antofagasta, Chile. Our work will build upon the data from limited historical exploration, utilizing the latest technologies to rapidly advance our understanding of the projects' potential. Mantau is well located amongst numerous copper mines and recent discoveries, and is an exciting, highly prospective third leg within the portfolio. This is an exciting time to be a shareholder of Andina Copper as we enter a period of intensive field activities and associated news flow and also pursue a dual listing on the TSX-V and ASX." — Joseph van den Elsen, President and CEO