Stuhini's Ruby Creek bulk sample returns 4,200 g/t Ag

Executive Summary

• Stuhini Exploration Ltd. reported highly favorable metallurgical test results from a 1,585-pound (719-kilogram) surface mini-bulk sample collected from the Silver Surprise zone at its Ruby Creek project in British Columbia.
• The tests confirmed a 95% silver recovery via direct smelting and a 15% recovery via gravity separation, validating the high-grade nature of the mineralization and suggesting a low-complexity processing route.
• The Silver Surprise zone remains open along strike and at depth, with the company planning follow-up prospecting, sampling, and potential drilling in 2026.

Key Details

• Sample Details: 1,585-pound (719-kilogram) surface mini-bulk sample collected in September 2025 from the Silver Surprise zone.
• Sample Grade: 4,200 grams per tonne silver (0.42% Ag).
• Gravity Separation Results:
  • Single pass on a Gemini shaking table.
  • Recovered 15% of the contained silver.
  • Produced a 445-gram (14.3-troy-ounce) refined silver bar.
  • Resulting concentrate graded approximately 10% silver.
  • Tailings after gravity separation assayed 3,540 g/t silver.
• Direct Smelting Results:
  • Achieved 95% silver recovery.
  • No chemical reagents or flotation used.
  • Considered a preferred processing route for this style of ultrahigh-grade, quartz-hosted silver mineralization.
• Previous Surface Sampling:
  • 28 samples assaying between 1,000 g/t and 16,030 g/t silver.
  • Four samples exceeded 10,000 g/t silver (specifically: 16,030 g/t, 14,179 g/t, 12,980 g/t, and 12,294 g/t).
• Geological Context:
  • Mineralization occurs in at least three parallel, subvertical quartz-sulphide veins hosted in granodiorite.
  • Veins are approximately one metre wide.
  • Exposed semi-continuously over strike lengths of 180 m, 50 m, and 30 m.
  • Veins strike approximately 220 degrees (southwest).
  • Zone remains open along strike in both directions and at depth.
• Next Steps:
  • Follow-up prospecting and sampling planned for 2026 to extend the zone at surface.
  • Larger bulk sample or drilling program possible in 2026, subject to permitting.

Notable Quotes

• "With multiple high-grade surface samples, the Silver Surprise zone has always stood out as one of the most intriguing areas on the property... We're very pleased to see the metallurgical results confirm 95-per-cent silver recovery from a 1,585-pound surface mini-bulk sample via direct smelting with a grade of 4,200 g/t silver. At a time when global demand for silver continues to rise -- driven by investment interest and industrial uses like solar, electronics and electrification -- this is a significant strategic advantage." — Meredith Eades, President and CEO