Tinka Resources begins first drill program at Silvia

Executive Summary

• Tinka Resources Ltd. has commenced its first-ever drill program at the 100%-owned Silvia gold-copper project in central Peru, targeting high-grade gold and copper mineralization hosted by skarn and porphyry systems.
• The initial program consists of four diamond holes planned to a depth of up to 400 meters at Area A, designed to test beneath outcrops of high-grade mineralization.
• Recent third-party validation sampling confirmed high-grade surface results, with the best individual sample grading 28.5 g/t Au and 1.2% Cu over 0.6 meters, supporting the decision to proceed with drilling.

Key Details

• Drill Program Scope: Four diamond holes planned to a depth of up to 400 meters at Area A.
• Drill Rig Status: Portable diamond drill rig commenced drilling on October 26, 2025.
• Hole Specifications (S25-001): Spudded approximately 15 meters beyond the known eastern limit of outcropping skarn; drilling to the west (290 degrees) at a dip of 55 degrees.
• Operational Schedule: Rig operating 24/7 until late December 2025.
• Results Timeline: First drill results expected before the end of December 2025; subsequent results expected early 2026.
• Validation Sampling Results (Third-Party):
  • Area A: Best individual sample graded 28.5 g/t Au, 1.2% Cu, 19 g/t Ag, and 5.2% Zn over 0.6 meters. Average grade of channel samples: 1.0 g/t Au, 0.43% Cu, 4 g/t Ag, and 0.4% Zn.
  • Area B: Six channels sampled; average grade 0.03 g/t Au, 0.28% Cu, 1.8 g/t Ag, and 0.08% Zn.
• Previous Tinka Sampling:
  • Surface samples returned up to 18 g/t Au and 12% Cu.
  • Continuous trench returned 46 meters at 1.9 g/t Au and 0.8% Cu, including 6 meters at 12.8 g/t Au and 2.7% Cu.
• Geological Context: Mineralization is interpreted to be controlled by a dilational pull-apart between two regional north-northeast-trending faults. Host rocks include monzonite porphyry intrusions and the Jumasha formation limestone.
• Future Plans: Areas B and C are identified as additional high-prospectivity targets to be assessed at a later stage.

Notable Quotes

• "I am thrilled to announce that a drill rig is now turning for the very first time to test the high-grade gold and copper discovery at our 100-per-cent-owned Silvia gold-copper project in central Peru... Silvia is a highly compelling, untested target in a world-class gold, copper and base metal belt, the notable example being the giant Antamina copper-zinc skarn deposit some 100 kilometres along trend to the north." — Dr. Graham Carman, President and CEO