Star Copper completes phase 1 work at Star

Executive Summary

• Star Copper Corp. completed its Phase 1 summer 2025 drilling program at the Star Project in northwestern British Columbia, consisting of six holes totaling over 2,200 metres.
• The program successfully expanded the near-surface supergene footprint by 75 metres to the southwest and confirmed copper mineralization across multiple intrusive phases, including overprinted potassic mineralization in the deepest hole drilled to date (675 metres).
• Based on these results, the company has advanced immediately into Phase 2 drilling planned for fall 2025, which will target stepouts at Star Main and explore new drill-ready targets at Star North and Copper Creek.

Key Details

• Drilling Program Scope:
  • Six-hole campaign (Holes 2025 A to F: S-050, S-051, S-052, S-053B, S-054A, S-055).
  • Total footage: Over 2,200 metres.
  • Deepest hole: Hole C (S-052) at 675 metres.
• Key Geological Findings:
  • Hole S-052: Intersected overprinted potassic mineralization.
  • Hole S-055 (2025-F): Intersected a near-surface oxide horizon with visible malachite and azurite, transitioning at depth to chalcopyrite in mineralized quartz monzodiorite, consistent with the oxide-to-hypogene model.
  • Supergene Expansion: Confirmed and expanded the supergene footprint by 75 metres to the southwest; overall expansion of the mineralized footprint at Star Main up to 250 metres by 300 metres.
  • Structural Framework: Sharpened structural and alteration controls, particularly along the Star fault and associated potassic (K-feldspar) alteration corridors.
  • Mineralization: Confirmed copper mineralization across multiple intrusive phases.
• Phase 2 Planning & Additional Exploration:
  • Phase 2 drilling is planned for fall 2025.
  • Phase 2 objectives include targeted stepouts and deeper tests at Star Main, plus exploratory holes at Star North and Copper Creek.
  • Star North: Detailed mapping plus 135 rock and 29 soil infill samples tightened structural and alteration controls.
  • Star East: Mapping and 59 rock samples refined interpretations of geophysical anomalies.
  • Star West: Soil-grid extensions and prospecting broadened geochemical coverage.
  • Copper Creek: New trail access, mapping, and 32 rock samples established logistically ready drill targets.
• Consulting Agreement:
  • Entered into an updated consulting services agreement with Upswitch Media Corp. effective Sept. 2, 2025.
  • Services include marketing, investor relations, copywriting, ad campaign design, and translation.
  • Initial term: 60 days.
  • Aggregate fee: $1-million.

Notable Quotes

• Darryl Jones, CEO: "Our phase 1 six-hole drill program successfully confirmed copper mineralization in multiple intrusive phases, refined structural and alteration models, including potassic halos and supergene enrichment, and expanded the supergene mineralized footprint at the Star Main zone up to 250 metres by 300 metres. With momentum building, phase 2 is planned for fall 2025 and will pursue targeted stepouts and deeper tests at Star Main while adding exploratory holes at Star North and Copper Creek to expand the copper footprint and unlock new discovery potential across the property."