Edge Copper Corporation (TSX: EDCU) (“Edge Copper” or the “Company”) reports assay results from eight additional diamond drill holes completed as part of its approximately 54,000-foot (ft) drilling program at the Company’s 100%-owned Zonia Copper Project (“Zonia” or the “Project”) in Arizona. The Company has now reported results from 53 holes in the current program.
Eight additional holes confirm broad, near-surface oxide copper mineralization across the central and northern portions of Zonia and extend mineralization well below shallow historical drilling. Edge Copper will incorporate the results into its updated geological and resource models and the planned fourth-quarter 2026 Mineral Resource estimate.
Importantly, drilling to date has changed the Company’s interpretation of Zonia’s potential limits. The western lithologic contact and eastern fault were previously interpreted as possible boundaries to the mineralized system. Current drilling demonstrates that mineralization crosses both features, and neither is now considered a hard boundary.
“The latest drilling is doing more than confirming continuity within the PEA design pit; it is changing our understanding of the limits and scale potential of Zonia,” said Gil Clausen, Chair and CEO of Edge Copper. “The western lithologic contact and eastern fault were previously treated as potential boundaries. The data now show mineralized zones extending across both features, so neither should be viewed as a hard limit to the system. These oxide results strengthen the geological model for the fourth quarter 2026 Mineral Resource update, and the forthcoming sulfide results will provide a much fuller view of Zonia’s scale potential.”
Drill Hole Highlights
- ZND0045 returned 475 ft grading 0.25% CuT from surface, including 160 ft grading 0.30% total copper (CuT) from 70 ft, 30 ft grading 0.32% CuT from 280 ft and 35 ft grading 0.36% CuT from 380 ft.
- ZND0063 returned 277 ft grading 0.33% CuT from surface.
- ZND0055 returned 345 ft grading 0.25% CuT from 480 ft, including 210 ft grading 0.30% CuT from 605 ft, plus a separate 33 ft interval grading 0.19% CuT from 860 ft.
- Additional broad oxide intervals include: 401 ft grading 0.18% CuT in ZND0036, 391 ft grading 0.21% CuT in ZND0025 and 373 ft grading 0.23% CuT in ZND0047, including 31 ft grading 0.40% CuT.
The new drilling reinforces continuity across the central and northern deposit areas, from near surface to depth, while identifying higher-grade zones within a broad mineralized envelope. ZND0045 confirms near-surface oxide copper mineralization in the north-central portion of the PEA design pit. ZND0055 extends oxide mineralization well below shallow historical drilling along the northwest margin. See Figure 1 for drill-hole locations, Figures 2, 3 and 4 for cross-sections, and Appendix A for complete drill-hole details and significant intercepts.
More broadly, the program has materially changed Edge Copper’s interpretation of the mineralized system. Earlier models treated the western lithologic contact and eastern fault as potential limits. Current drilling demonstrates that mineralization continues across both features. The geological model is being revised accordingly, increasing the area considered prospective for mineralization and future resource evaluation.
Conrinue at Edge Copper
