Kobrea identifies breccia body at Western Malargue

Executive Summary

• Kobrea Exploration Corp. has identified a large, previously unknown 1,250-metre-by-500-metre hydrothermal breccia body at target KBX-17 within its Western Malargue copper projects in Argentina.
• The discovery is significant as it was not referenced by previous operators and has seen no prior drilling, validating the company's exploration thesis for the land package.
• Geochemical sampling indicates the breccia is anomalous in copper, with host rock samples containing up to 1.6% copper, suggesting a vertically zoned, sulphide-cemented system potentially originating from a porphyry system at depth.

Key Details

• Discovery Location: Target KBX-17, Cuprum trend, Western Malargue copper projects, Mendoza Province, Argentina.
• Target Dimensions: 1,250 metres by 500 metres.
• Geological Context: The hydrothermal breccia intrudes an equigranular diorite stock (4km x 2km) which exhibits propylitic alteration at the contact. The diorite stock intrudes upper Jurassic-aged sedimentary rocks of the Tordillo formation.
• Sampling Results (Breccia): Samples from the strongly leached and weathered hydrothermal breccia grade between 161 ppm and 408 ppm copper.
• Sampling Results (Host Rock): Samples of the immediate vicinity host rock (diorite) contain up to 1.6% copper.
• Additional Breccia: Several smaller hydrothermal breccia bodies were mapped within the diorite stock, including a 300-metre-by-150-metre magnetite cemented breccia with samples up to 223 ppm copper.
• Historical Context: Target KBX-17 was first identified in March 2025 via a multikilometre colour anomaly. There is no reference to this prospect by previous operators, and it has seen no drilling to date.
• Future Work: Kobrea plans an induced polarization (IP) survey to investigate the potential of an underlying porphyry system. The team is also conducting systematic geological mapping and geochemical sampling at other porphyry deposit-scale prospects across the Western Malargue projects.
• QA/QC: Samples were analyzed by Alex Stewart International (ISO/IEC 17025:2017 accredited). Analysis included ICP-MA-39 (39 elements) and fire assay for gold. Overlimit copper samples (>10,000 ppm) were reanalyzed via ICP-ORE.

Notable Quotes

• "Our team has identified, mapped and sampled a previously unknown 1,250-metre-by-500-metre hydrothermal breccia at target KBX-17. The breccia is anomalous in copper, and samples in the diorite host rock contain up to 1.6 per cent copper in the immediate vicinity of the breccia body. The interpretation of our field geologists is that this target is a vertically zoned, sulphide-cemented hydrothermal breccia originating from a porphyry system at depth. This result highlights the exploration upside across this exceptional land package and validates our exploration thesis that there is more to be discovered across these projects, beyond what has been outlined by previous operators." — James Hedalen, Chief Executive Officer