Star Copper completes three drill holes at Star Main

Executive Summary

• Star Copper Corp. completed three Phase 2 drill holes (S-058, S-059, S-060) at the Star Main target of its 100%-owned Star project in British Columbia’s Golden Triangle.
• The drilling expanded the copper footprint to the north and west, sharpening vectors toward the potassic core and extending mineralization into new panels.
• Assay results for these specific holes are pending; however, core logging highlights significant geological features including potassic alteration, chalcopyrite-bearing veining, and proximity to the porphyry core.

Key Details

• Drilling Campaign Status: Completion of Phase 2 holes S-058, S-059, and S-060 at the Star Main target. Eleven additional holes remain pending for the 2025 campaign.
• Strategic Objective: Drilling aimed to extend mineralization north and west of recent collars, tighten the geologic framework linking near-surface copper oxide mineralization with hypogene vein and dissemination-hosted chalcopyrite mineralization in potassic-altered intrusives.
• Hole S-058 (Northern Step):
  • Drilled vertically.
  • Cut oxidized quartz monzodiorite (QMD) transitioning into layered volcanic sequence (plagioclase-porphyry and andesite tuffs).
  • Below ~130 meters, core is densely veined by quartz-pyrite-chlorite-magnetite-chalcopyrite (D-type) veins.
  • Chalcopyrite increases with depth; trend consistent with northward continuation of Star Main's hypogene system.
• Hole S-059 (South-Directed Test):
  • Drilled to 317 meters.
  • Probed steep structures and intrusive contacts above a prominent IP chargeability high.
  • Intersected fractured QMD cut by discrete clay-rich fault zones acting as hydrothermal fluid pathways.
  • Logging shows pervasive to patchy potassic (K-feldspar) alteration, magnetite accessories, and sheeted quartz-pyrite-chalcopyrite veinlets with local stockwork development.
• Hole S-060 (West-Dipping Test):
  • Targeted central to eastern vein networks.
  • Encountered well-developed K-feldspar vein halos and sheeted to stockwork quartz-chalcopyrite veining.
  • Features include local sulphide-cemented breccia textures, strong vein density, potassic and biotite alteration, and subordinate pyrite, indicating proximity to the potassic core.
• Administrative/Marketing Update:
  • Entered into an updated consulting services agreement with Upswitch Media Corp. effective Nov. 14, 2025.
  • Services include marketing, investor relations, ad content design, and campaign tracking.
  • Initial term: 60 days.
  • Aggregate fee: $500,000.
  • Principal: Jeff Gillis.

Notable Quotes

• Darryl Jones, CEO: "For those who have been following our ongoing news, these three holes move the Star Main system forward on multiple fronts. We've extended mineralization into new panels, strengthened the link between potassic alteration and chalcopyrite at depth, and added corridors displaying significant veining density where it matters the most."