Slave Lake assays 7.75% Pb, 6.62% Zn at O'Connor Lake

Executive Summary

• Slave Lake Zinc Corp. has released encouraging geochemical results from a late 2025 geological review at its O'Connor Lake exploration property in the Northwest Territories.
• The program validated the company's regional exploration model, identifying high-grade mineralization in multiple new structures several kilometers from the historic Shaft zone.
• Assays returned up to 7.75% lead and 6.62% zinc, with significant byproduct potential including copper (0.17%–0.92%) and silver (up to 19.5 g/t).

Key Details

• High-Grade Mineralization: Assays from recently identified vein systems returned grades of up to 7.75% lead and 6.62% zinc.
• Widespread Mineralization: Results validate a district-scale hydrothermal system with multiple mineralized structures identified outside the known Shaft zone deposit.
• Byproduct Potential: Sampling revealed widespread copper values ranging from 0.17% to 0.92% Cu, along with elevated silver values up to 19.5 grams per tonne Ag.
• Geological Validation: Fieldwork confirms that new vein systems share a similar orientation and appearance to the historic Shaft zone, supporting a large, deep-seated hydrothermal origin.
• Program Scope: The program was conducted in late September and early October 2025 by Aurora Geosciences Ltd. over a 10-day period.
• Location: O'Connor Lake property, South Slave area, Northwest Territories.
• Strategic Context: The program was supported by the Northwest Territories government's mineral incentive program.
• Next Steps: The company is analyzing findings to define the 2026 exploration program, including optimizing geological sampling, structural analysis, geophysical surveys, and delineating diamond drilling targets.

Notable Quotes

• "The results of this season's field program are a major step forward for the company. We have successfully demonstrated that high-grade mineralization is not confined to the Shaft zone but is part of a much larger, district-scale system." — Ritch Wigham, CEO