Onyx Gold Drills 1.1 g/t Gold Over 194.4m Cumulative Thickness in Step-Out Hole at Argus North Zone, Munro-Croesus Project

Executive Summary

• Onyx Gold announced assay results from eight step‑out drill holes in the Argus North zone of its 100 % owned Munro‑Croesus Project, extending a 25,000 m exploration program.
• Highlights include a cumulative 194.4 m of mineralization in hole MC25‑177 (91 m @ 1.1 g/t Au and 103.4 m @ 1.1 g/t Au) and high‑grade sub‑intervals such as 9.8 m @ 2.9 g/t Au (including 2.2 m @ 11.8 g/t Au) in hole MC25‑174.
• The program is 60 % complete (≈15,000 m drilled), fully funded with ~$10 M cash, and the zone remains open along strike, down‑dip and down‑plunge.

Key Details

• Program Status: 48 holes drilled to date; assays announced for 15 holes; ~15,000 m (60 %) of the 25,000 m program completed. Fully funded ($10 M cash).
• Hole MC25‑177:
• 91.0 m @ 1.1 g/t Au (incl. 27.0 m @ 2.0 g/t Au; 4.0 m @ 4.6 g/t Au)
• 103.4 m @ 1.1 g/t Au (incl. 38.4 m @ 2.4 g/t Au; 7.0 m @ 3.4 g/t Au) – total cumulative width 194.4 m.
• Hole MC25‑181:
• 139.1 m @ 0.8 g/t Au (incl. 8.5 m @ 2.2 g/t Au; 4.9 m @ 3.1 g/t Au; 6.9 m @ 4.3 g/t Au).
• Hole MC25‑174 (Argus Main Zone): 9.8 m @ 2.9 g/t Au, including a high‑grade 2.2 m @ 11.8 g/t Au interval.
• Other Notable Intercepts:
• Hole MC25‑187A: 35.0 m @ 1.1 g/t Au (incl. 7.0 m @ 3.4 g/t Au).
• Hole MC25‑176A: 16.0 m @ 1.0 g/t Au (incl. 4.5 m @ 2.5 g/t Au).
• Non‑significant Holes: MC25‑169 and MC25‑170 returned no significant values.
• Geological Context: Intercepts are associated with albitization, silicification, pyritic stringers, and porphyritic intrusions within variolitic basalt/volcanic breccias; mineralization traced from surface to >350 m depth.
• Future Plans: Continue step‑out drilling on 50–100 m spaced cross‑sections to extend strike length (>100 m) and depth of the Argus North zone.

Notable Quotes

“Our latest drilling at Argus North continues to demonstrate broad zones of gold mineralization with multiple higher‑grade subintervals… Intersecting nearly 200 metres of cumulative mineralization in a single hole underscores the scale of the system.” – Brock Colterjohn, President & CEO

All forward‑looking statements are subject to risks and uncertainties; actual results may differ.