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National Post

TomaGold Launches Strategic Drilling Campaign on its Chibougamau Projects

Company also announces positive results from its 3D geological model at Obalski, revealing high-potential copper-gold targets Article content MONTREAL — TOMAGOLD CORPORATION (TSXV: LOT; OTCPK: TOGOF) (' TomaGold ' or the ' Company ') is pleased to announce the beginning of its drilling program on its Chibougamau projects in Quebec. As outlined in its June 20, 2025 press release, the Company has initiated a 53-hole exploration drilling program targeting its key projects, namely Obalski, Berrigan Mine, Radar, David, and Dufault, with the goal of uncovering new gold-copper mineralization on strategically selected, well-defined targets. Article content Article content TomaGold is also pleased to announce the results of its most recent 3D geological and structural interpretation of the Obalski project (the 'Project'), located two kilometres south of Chibougamau, Québec, within the mineral-rich Abitibi Greenstone Belt. Article content This comprehensive modeling effort led to the identification of multiple copper-gold (Cu-Au) mineralized zones controlled by well-defined shear systems, offering substantial upside for future exploration and drilling. This work integrates historical drilling data, geophysical surveys (resistivity and metal factor), and structural interpretation, resulting in a refined geological framework for the Project that confirms several high probability yet untested mineralized targets. Article content TomaGold's CEO David Grondin stated: 'This model provides us with a far more detailed and accurate picture of the lithological, structural, and mineralization architecture at Obalski. It confirms historical mineralization trends and identifies a series of compelling, high-confidence exploration targets observed elsewhere in the Chibougamau Mining Camp, based on recent work by the TomaGold technical team. We now have a clear roadmap to expand mineralized zones with precision-guided exploration using surface bedrock and soil sampling, outcrop stripping and sampling, and SONIC and diamond drilling.' Article content Technical Highlights and Key Conclusions Article content The updated geological model successfully reconciles decades of reportedly dissimilar and inconsistent datasets into a unified and standardized 2D and 3D framework of lithologies, structures, mineralization, geochemistry, and assay results. This integration significantly improves confidence in target definition and enhances geological continuity across the Project. Article content Key Findings: Article content 1. Identification of Two Major Shear Systems Article content The interpretation confirms the presence of two dominant shear systems: Article content A N110° (SE-NW) trending shear structure associated with copper-gold mineralization in quartz veins and chlorite-carbonate altered zones. A younger 020° (NE-SW) trending shear that offsets the former structure and appears to host predominantly gold mineralization. Article content The intersection of these two systems creates structurally favorable zones with increased permeability, representing high-priority targets for hydrothermal fluid migration and metal deposition. This structural configuration is clearly illustrated in Figure 1. Article content Article content 2. Spatial Association Between Mineralization and Intrusive Contacts Article content Numerical models of copper assays revealed that Cu enrichment is concentrated along the margins of intrusive units—particularly dioritic and granitic contacts. These observations support a genetic link between magmatic activity and mineralization. The highest assay clusters occur near structurally disrupted intrusive contacts. This correlation is well depicted in Figures 2 and 3. Article content 3. Well-Defined Mineralized Zone and Orientation Article content The integrated model delineates a mineralized zone trending north-northeast with a moderate plunge of approximately 32° toward the east. This geometry aligns with regional shear zones and provides a clear vector for down-plunge drilling extensions, shown in Figure 4. Article content 4. Predictive Mineralization Modelling Validates Untested High-Potential Zones Article content The 3D distance-based predictive model combines geophysics, lithology, and geochemistry to estimate the probability of mineralization. The zones with the highest potential for mineralization (shown in purple and dark blue shells in Figure 5 below) are concentrated along structural intersections and lithological boundaries between pillowed volcanics and intrusive rocks. Article content Exploration Upside and Targeting Strategy Article content The integration of geological, structural, and assay data defines multiple high-priority exploration targets, which are summarized as follows: Article content Structural intersections of the N110° (SE-NW) and NE-SW trending shears offer the greatest potential for mineralized shoots. Intrusive-volcanic contacts (especially where sheared) consistently correlate with higher copper and gold grades. Down-plunge extensions along the 32° plunge trend remain open and under-drilled. The southeastern area of the Project, where folding and intrusive complexity are observed (potential dioritic trap), presents a newly recognized exploration opportunity. Parallel, underexplored structures may host additional mineralized lenses. Article content This targeting strategy is supported by both structural logic and assay correlations, enhancing drill efficiency and reducing exploration risk. Article content Recommendations and Next Steps Article content To optimize future exploration success, the report recommends the following: Article content Increasing the assay dataset through systematic sampling of drill holes, particularly across lithological and structural contacts. Standardizing core logging protocols, with a focus on alteration, structure, and geochemical pathfinder elements. Re-logging historic cores with updated multi-element and trace element geochemistry (e.g., pXRF and spectral analysis). Expanding geophysical coverage, including high-resolution passive and active seismic surveys (in collaboration with the Smart Exploration Centre). Widening the geochemical scope beyond Au and Cu to include Ag, Zn, Bi, Te, and other pathfinder elements.