Argyle Resources Reports High Purity Silica Results up to 99.9% SiO2 from 2025 Prospecting Program at Saint Gabriel Project, Quebec

Executive Summary

• Argyle Resources reported high‑purity silica results from its 2025 prospecting program at the 100 % owned Saint Gabriel Project in Québec.
• Four grab samples returned ≥99.9 % SiO₂, with the best assay of 99.90 % SiO₂ from Sample 6 (quartzite) near the Lac Rigo Showing.
• A newly identified silica zone ~800 m west of Lac Rigo produced multiple >99 % SiO₂ assays (99.20 %, 99.50 %, 99.70 %), indicating a second high‑grade target for follow‑up work.

Key Details

• Program Scope: 17 grab samples collected over four days in fall 2025; all submitted to ALS Canada Ltd. for whole‑rock geochemical analysis.
• Top Assays:
• Sample 6 – 99.90 % SiO₂ (quartzite) – Lac Rigo Showing
• Sample 11 – 99.20 % SiO₂ (quartz arenite) – newly discovered western zone
• Sample 13 – 99.50 % SiO₂ (quartzite) – western zone
• Sample 14 – 99.70 % SiO₂ (quartz mudstone) – western zone
• Overall Results: SiO₂ values ranged from high‑96 % to >99 %; all samples in the Lac Rigo area exceeded 97 % SiO₂.
• Geological Context: Sampling targeted quartz‑rich lithologies (arenite, quartz arenite, quartzite, quartz‑interbedded siltstone). High silica purity confirmed across multiple host rocks.
• New Discovery: High‑purity silica zone ~800 m west of Lac Rigo with a cluster of >99 % SiO₂ results, now prioritized for expanded follow‑up (mapping, additional sampling).
• Project Size: 23 contiguous mining claims covering ≈1,313 ha; fully owned by Argyle.
• Previous Milestones:
• Early 2025 – acquisition of Saint Gabriel Project.
• May 2025 – satellite remote‑sensing studies (LWIR, SWIR, gas mapping).
• June 2025 – filing of NI 43‑101 technical report.
• Next Steps: Conduct further field reconnaissance, detailed geological mapping, and expanded sampling to define continuity, lateral extent, and scale of the two high‑purity silica zones. Access will be managed parcel‑by‑parcel due to private surface rights.
• Quality Assurance/Control: Samples sealed with unique IDs, handled by Argyle personnel, analyzed by independent ISO/IEC 17025‑accredited ALS lab; QA/QC included certified reference standards and blanks.

Notable Quotes

“These results reinforce the high purity silica potential at Saint Gabriel, with multiple samples returning greater than 99 % SiO₂, including a peak value of 99.9 % SiO₂ near Lac Rigo,” said Jeffrey Stevens, President and CEO of Argyle Resources.
“The identification of additional high‑grade material in a previously unexplored area west of Lac Rigo strengthens our confidence that Saint Gabriel may host more than one high quality silica zone.”