Star Copper begins phase 2 drilling at Star

Executive Summary

• Star Copper Corp. has commenced Phase 2 drilling at its 100%-owned Star project in British Columbia, with the first hole (S-056) intersecting significant mineralization including up to 240 metres of potassically altered rock and bornite.
• Hole S-056 expanded the known mineralized corridor approximately 100 metres to the west of the previous hole (S-055), strengthening the west-southwest trend of near-surface oxides above hypogene sulphides.
• The Copper Creek target, located southeast of Star Main, has reached an advanced state of readiness for drilling, with geological mapping identifying multiple chalcopyrite-mineralized outcrops and sulphide occurrences.

Key Details

• Phase 2 Drilling Kickoff: The company initiated a proposed 4,000-metre exploration program at the Star project.
• Hole S-056 Intersections:
  • Intersected up to 240 metres of potassically altered rock with small intergrown bornite (not previously seen in Star project samples).
  • Cut a broad, near-surface oxide-to-transitional profile (approximately 8 to 131 metres) with multiple faults and breccias; malachite noted on fractures locally to 50 metres depth.
  • Below 131 metres, the hole transitions into the hypogene domain exhibiting consistent potassic (potassium-feldspar) alteration, vein halos, and pervasive replacement.
  • Chalcopyrite occurs as fine disseminations and within quartz-pyrite-chalcopyrite veins and stockworks.
  • Broad, well-veined intervals identified from 284 to 413 metres, with minor pyrite plus or minus chalcopyrite continuing intermittently to the end of the hole.
• Hole S-056 Specifications:
  • Collared approximately 100 metres west of S-055.
  • Drilled north at minus 75 degrees to a depth of 551 metres.
  • Situated on a drill pad where fieldwork uncovered significant copper-oxide mineralization (malachite, azurite, chrysocolla) in oxidized breccias.
• Geological Impact:
  • S-056 expands the known mineralized corridor approximately 100 metres to the west.
  • Strengthens the west-southwest trend of near-surface oxides above hypogene sulphides in quartz monzodiorite.
  • Samples from S-056 are pending QA/QC review and will be reported once received.
• Mineralogy Updates:
  • Identification of bornite (Cu5FeS4), a high-grade copper ore often found in supergene enrichment zones, in addition to chalcopyrite (CuFeS2).
  • The supergene zone at Star Main is noted as a relatively rare find for the region, suggesting valuable metals concentration near the surface.
• Copper Creek Target Update:
  • Field crew has complete trail access from the Star camp.
  • Completed systematic geological traverse across the Copper Creek gully system, including ground-truthing historic drill sites (G1-70 and G2-70).
  • Mapping identified multiple chalcopyrite-mineralized outcrops within fractured volcaniclastic units and disseminated within quartz diorite dikes and sills.
  • Malachite and azurite staining observed on several outcrops west of historic collars.
  • Additional sulphide occurrences (pyrrhotite, sphalerite, galena) observed over roughly one kilometre of strike within the creek basin.
  • Main mineralized zone comprises a 3-4 metre wide, subvertical breccia with quartz-sulphide and vuggy quartz-chalcedony veining.
  • Includes several 5-25 centimetre lenses of semi-massive pyrite-chalcopyrite hosted in heavily fractured volcanics.
  • Interpretation and analysis of collected samples are underway to finalize drill-ready targets for Phase 2.

Notable Quotes

• "Momentum is building. With hole S-056 confirming westward expansion at Star Main and Copper Creek advancing toward drill-ready status, phase 2 will focus on targeted stepouts, deeper tests along the W-SW trend and first-pass holes at Copper Creek to broaden discovery potential across the property. The entire team at Star Copper looks forward to sharing assay results and continued updates as phase 2 progresses." — Darryl Jones, Chief Executive Officer