Seabridge releases Snip N metallurgical test results

Executive Summary

• Seabridge Gold announced robust results from its inaugural metallurgical test program on drill core samples from the Snip North deposit, part of the 100%-owned Iskut gold-copper project in British Columbia.
• The program confirms that Snip North mineralization responds very well to conventional flotation, with excellent gold and copper recoveries, supporting the development of a maiden resource statement.
• Test results indicate the mineralization is generally soft, suitable for conventional grinding circuits, and allows for the production of a separate molybdenum concentrate.

Key Details

• Sample Scope: The program tested 10 drill core interval samples and four composite samples from the Snip North deposit, taken from the 2025 exploration program.
• Testing Facility: Conducted at ALS Metallurgy in Kamloops, B.C., following the flotation flow sheet established for Seabridge's KSM project.
• Locked Cycle Tests (LCT):
  • Primary grind size: 80% passing approximately 130 microns.
  • Concentrate Grades: Copper-gold-molybdenum concentrates showed grades ranging from 20% to 28% copper and 83 g/t to 525 g/t gold.
  • Head Grades: Samples had head grades ranging from 0.04% to 0.26% copper and 0.4 g/t to 1.21 g/t gold.
  • Recovery: Gold and copper recovery to the bulk flotation concentrate was described as excellent.
• Molybdenum Separation: Molybdenum recovery indicates a separate molybdenum concentrate can be produced; copper and gold grades in LCT concentrates are expected to increase further after this separation.
• Cyanide Leaching: Completed on the first three pyritic concentrates from LCTs, showing excellent recoveries with overall gold recoveries increasing to between 85.3% and 92.7%.
• Grindability: Initial Bond Work Index tests ranged from 9.9 to 11.9 kilowatt-hours per tonne, indicating the mineralization is generally soft and suitable for conventional SAB or SABC grinding circuits.
• Strategic Impact: Results confirm a robust metallurgical response to flotation and will support the development of a maiden resource statement for Snip North.

Notable Quotes

• "These robust metallurgical results from the Snip North maiden test program provide a strong foundation to support the upcoming maiden resource estimate." — Rudi Fronk, Seabridge Chair and Chief Executive Officer