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Production / Operations

Starcore produces 1,860 AuEq ounces in fiscal Q2 2026

By The Northwire Desk — AI Analysis Nov 19, 2025 · 10:25 SAM · 0.50 Starcore International Mines Ltd.
SAM · Price

Executive Summary

  • Starcore International Mines Ltd. reported lower metal production for the second fiscal quarter ended October 2025 at its San Martin mine in Queretaro, Mexico, due to technical challenges with ore processing.
  • The production decline was attributed to a "preg-robbing" effect caused by clay in the ore and the presence of fine activated carbon particles ("carbon fines") that absorbed gold and silver during the desorption process.
  • The company has implemented operational fixes, including optimizing the CIL plant, installing filter presses, and fully separating processing circuits, with plans to restart processing stockpiled carbonaceous ore immediately.

Key Details

  • Production Period: Second fiscal quarter ended October 2025.
  • Location: San Martin mine, Queretaro, Mexico.
  • Primary Issues:
    • Clay Content: Caused a preg-robbing effect, trapping gold and reducing recovery rates.
    • Carbon Fines: Fine particles of activated carbon mixed with the pulp sent to the desorption process, absorbing gold and silver and further lowering recovery.
  • Corrective Actions Implemented:
    • Optimized the use of the Carbon-in-Leach (CIL) plant to improve gold recovery.
    • Installed two filter presses: one at the discharge of the Adsorption, Desorption, and Recovery (ADR) process and another in the thickener tank for solution recycling.
    • Fully separated the two processing circuits to prevent contamination.
    • Installing a cyanide destruction module to allow the carbonaceous ore process to use a cyanide-free solution during grinding.
  • Future Outlook: The company expects to restart processing stockpiled carbonaceous ore at the mine in the current month following the completion of the cyanide destruction module construction.
  • Qualified Person: Salvador Garcia, BEng, Director and Chief Operating Officer, is the Qualified Person under National Instrument 43-101.

Notable Quotes

  • "We will have multiple sources of ore requiring different processing methods so as to continue to produce profitable ounces," stated Salvador Garcia, the company's chief operating officer.
Read the original news release →

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