Core Silver Confirms Expansion of Laverdiere Porphyry by 280 Metres Through Drilling

Executive Summary

• Core Silver announced a 280‑metre step‑out drill intercept (hole LAV25‑013) that extends the Laverdière porphyry Cu‑Mo system to >1,050 m depth and confirms a ~675 m mineralized envelope between 2025 holes.
• The 2025 program completed seven diamond holes (3,857 m total) across five target zones; all assay results are still pending.
• Visuals and geological highlights were released, showing strong alteration, chalcopyrite, molybdenite and occasional bornite, indicating proximity to a large fertile porphyry centre.

Key Details

• Hole LAV25‑013 – final depth 1,088.4 m; drilled 280 m northwest of holes LAV25‑010/011; intersected continuous Cu‑Mo mineralization from surface to >1,050 m depth.
• Step‑out extension: 280 m lateral step‑out confirms expansion of the porphyry system at the Valley Zone.
• System continuity: Mineralization now defined over ~675 m between 2025 drill holes and 2.3 km between Valley and Main Zones; overall footprint ≈4.5 km × 3.1 km.
• Alteration/mineralogy: Persistent porphyry‑style alteration, widespread molybdenite, increasing chalcopyrite at ~350 m depth, spotty bornite, and sulphosalt (Ag‑bearing) zones.
• 2025 drilling summary: 7 holes, 3,857 m total; targets included Upper/Lower Valley Fault zones; all assays pending.

• Historical context: Prior drilling (2022) returned up to 48.5 m @ 0.90 % Cu, 6 g/t Ag, 0.11 g/t Au; historic adits reported 27 m @ 1.20 % Cu and 175 m @ 0.27 % Cu with higher‑grade intervals.
• Future work: Soil geochemical survey results expected in coming weeks; assay results from the 2025 diamond program to be released subsequently.

Notable Quotes

“LAV25-013 is a substantial advancement for the Laverdiere Copper Project,” said Nick Rodway, President and CEO. “This hole confirms that we are dealing with a very large porphyry system… The system is clearly open, and we are only beginning to unlock the full potential of the Laverdière Porphyry.”