Silicon Metals estimates quartzite volume at Ptarmigan

Mr. Morgan Good reports SILICON ANNOUNCES THE PTARMIGAN PROJECT PRELIMINARY 3D MODELLING RESULTS Processing of the lidar data collected in the summer of 2025 has resulted in the preliminary volumetric estimate of approximately five million cubic metres of surface quartzite material at Silicon Metals Corp.'s Ptarmigan project. As disclosed in the company's June 4, 2025, news release, samples of quartzite material collected from these ridges tested up to 99.99-per-cent SiO2 (silicon dioxide) purity, with an average purity of the collected samples of 98.49 per cent SiO2. The Ptarmigan project contains a number of topographic-high ridges, which are indicated to be composed of quartzite material based on lidar surveying, ground mapping and 3-D modelling. In August, 2025, the Ptarmigan quartzite ridges were traversed and ground truthing was completed by geologists. The geological contacts and structures were mapped, and the field data collected were utilized in the 3-D model. The 3-D model was constructed with the powerful engineering CAD software Civil3D by Autodesk. This is an industry-standard design software that specializes in calculating the volume of topographic features, stockpiles, cut and fills, excavation, and other such engineering and scientific applications. Using the digital elevation model topography from the lidar and the mapped geological contacts, quartzite zones were established. As the quartzite zones consist of topographically high ridges, preliminary volume estimates were calculated by cutting the ridges down to match the surrounding topography. The results of the 3-D modelling yielded the volumetric estimate of approximately five million cubic metres of quartzite material present in the topographic-high ridges. The density of the Ptarmigan quartzite is approximately 2.6 tonnes per cubic metre, as determined by in-house laboratory analysis. Rock density was calculated through water volume displacement. Six representative samples were initially weighed to obtain their dry mass. Samples were then placed in a container with a known water level. The subsequent displacement of water was then measured to determine the volume of each sample. The rock density of each sample was then calculated using the dry mass and volume values and an average density of the six samples was calculated. The typical density of quartzite ranges from 2.5 to 2.8 tonnes per cubic metre. This volumetric estimate represents quartzite material that is at surface above grade in the form of topographic-high ridges and does not consider any material not visible at surface. The potential quantity and grade of this exploration target are conceptual in nature. There has been insufficient exploration to define a mineral resource, and it is uncertain if further exploration will result in the target being delineated as a mineral resource. The estimate disclosed in this news release is based on surface lidar data and limited geological mapping and modelling and does not constitute a mineral resource or mineral reserve estimate as defined by National Instrument 43-101 and the CIM (Canadian Institute of Mining, Metallurgy and Petroleum) definition standards. Lab-scale processing The company has completed a preliminary lab-scale processing program meant to simulate the typical simple preliminary steps necessary for the generation a high-purity product. This lab-scale processing consisted of crushing, washing, magnetic separating, sorting and acid bathing and does not consider further advanced upgrading methods such as flotation. Samples from this lab-scale processing have been sent for purity analysis. The company is awaiting the results with optimism and will report to the market once received. Technical information Raymond Wladichuk, PGeo, director and chief operating officer of Silicon Metals, a qualified person as per NI 43-101, Standards of Disclosure for Mineral Projects, has reviewed and verified the assay data, and has approved the scientific information in this new release. Mr. Wladichuk is a professional geoscientist registered in British Columbia and Ontario. About Silicon Metals Corp. Silicon Metals is currently focused on exploration and development in Canada, namely British Columbia and Ontario. The company's Maple Birch project, located approximately 30 kilometres southeast of Sudbury, Ont., is a high-purity quartz pegmatite project with a 3,000-tonne-per-year production permit. The company also holds an undivided 100-per-cent right, title and interest in the exploration stage and now fully five-year permitted Ptarmigan silica project, located approximately 130 kilometres from Prince George, B.C. The company has also acquired an undivided 100-per-cent right, title and interest in both the exploration-stage Silica Ridge silica project, located approximately 70 kilometres southeast from the town of MacKenzie, B.C., as well as the exploration-stage Longworth silica project, located approximately 85 kilometres east from Prince George, B.C. We seek Safe Harbor.