Silicon Metals estimates quartzite volume at Ptarmigan

Executive Summary

• Silicon Metals released preliminary 3‑D modelling results indicating ~5 million m³ (~13 Mt) of surface quartzite material at the Ptarmigan project, with an average SiO₂ purity of 98.49 %.
• The estimated density of the quartzite is 2.6 t/m³ based on laboratory water‑displacement tests.
• A lab‑scale processing trial (crushing, washing, magnetic separation, sorting, acid bathing) has been completed; results are pending and will be reported when available.

Key Details

• Volumetric Estimate: Approximately 5 million cubic metres of quartzite material in topographic‑high ridges.
• Mass Equivalent: ~13 million tonnes (5 M m³ × 2.6 t/m³).
• Purity of Samples: Individual samples up to 99.99 % SiO₂; average purity 98.49 % SiO₂.
• Data Sources: Lidar survey (summer 2025), ground truthing (August 2025), geological mapping, and CAD modelling using Autodesk Civil3D.
• Density Determination: Six representative samples measured via water‑displacement; average density 2.6 t/m³ (typical quartzite range 2.5–2.8 t/m³).
• Scope of Estimate: Surface‑visible material only; does not include subsurface or non‑visible resources.
• Resource Status: Conceptual estimate; insufficient exploration to define a mineral resource under NI 43‑101 and CIM standards.
• Lab‑Scale Processing Program: Simulated primary steps (crushing, washing, magnetic separation, sorting, acid bath); advanced upgrading (e.g., flotation) not included.
• Pending Results: Purity analysis of processed lab samples is underway; company will issue a follow‑up release upon receipt.
• Qualified Person: Raymond Wladichuk, P.Geo., Director & COO, reviewed and verified assay data per NI 43‑101 requirements.

Notable Quotes

(No direct quotes were provided in the release.)