Star Copper Confirms Copper Creek Mineralized Zone

Executive Summary

• Star Copper advanced the Copper Creek satellite target to a drill‑ready stage and completed its first modern diamond drill hole (CC‑25‑001) in 2025.
• The 151 m hole intersected heavily fractured, altered lithic tuffs and cherty sediments with visible chalcopyrite, quartz‑epidote veins, and semi‑massive pyrrhotite‑pyrite‑chalcopyrite mineralization, confirming a new copper‑gold system 2.5 km from the Star Main zone.
• Results are expected to have a “very positive” impact on the Company’s 2026 drilling program and overall project scope, supporting plans for a future NI 43‑101 resource estimate.

Key Details

• Target Development: Copper Creek target progressed from concept to drill‑ready during 2025, including trail access, a 32‑sample soil grid over an IP chargeability high, and detailed mapping with 36 rock samples.
• Drill Hole CC‑25‑001:
• Coordinates: 34°11′81.8″ E, 64°56′42.2″ N; elevation 902 m ASL.
• Azimuth 262°, dip –45°.
• Total depth 151 m (core retrieved).
• Geology & Alteration: Core intersected heavily fractured andesitic lithic tuffs, dark cherty laminated sediments, brecciation, intense chlorite‑epidote alteration, and zones of chalcopyrite in quartz‑epidote veins and semi‑massive pyrrhotite‑pyrite‑chalcopyrite shear zones.
• Historical Context: Hole targeted the copper‑gold mineralization previously reported from 1970s ARIS drill (80026) within a 550 m × 1,000 m Cu‑Au soil anomaly.
• Assay Results: Assays pending; company expects “interesting and potentially very positive” outcomes that will influence 2026 drilling plans.
• QA/QC Protocol: HQ/NQ diamond core, split‑core method, 5% certified reference materials, blanks, field duplicates; analysis by Bureau Veritas Laboratories (ISO/IEC 17025).
• Qualified Person: Jeremy Hanson, P.Geo., independent contractor, reviewed and approved technical content.
• Future Plans: 2026 campaign will extend confirmatory drilling on Copper Creek and explore the northern geophysical target to broaden overall project scope toward a NI 43‑101 resource estimate.

Notable Quotes

“Collectively, the 2025 campaign mapping, soils sampling and first drill hole confirms continuity with historic copper mineralization and meaningfully advances Copper Creek toward identifying the porphyry‑style source driving the drainage‑scale anomalies… we look forward to reporting the assay results … which is sure to have an interesting and potentially very positive impact on our plans for 2026.” – Darryl Jones, CEO & President, Star Copper Corp.