Montréal, Québec — December 17, 2025 — Leads & Copy — Beauce Gold Fields (BGF) has announced a major advancement in understanding the Grondin gold zone through the creation of a 3D Leapfrog geological model. The model integrates diamond drilling data from the 2023 and 2025 campaigns and provides the first three-dimensional visualization of the antiform-“saddle reef” mineralized system.
The company has tracked the system over an 8 km geophysical signature and drilled it over a length of 600 meters.
Patrick Levasseur, President and CEO of Beauce Gold Fields, stated that the 3D Leapfrog model is a significant milestone for the company. It allows them to visualize the geometry of the “saddle reef” gold structure in three dimensions and observe the continuity of mineralization over 600 meters. The 88% drilling success rate over two campaigns gives the company considerable confidence. The model is expected to improve the accuracy of drilling targets and position the company for exploration.
The 3D model integrates digitized drill sections, gold assay intervals, lithological logs, and structural interpretations from Grondin zone drill holes, including those from 2023 (GR-23-01 to GR-23-08) and 2025 (GR-25-01 to GR-25-08). The data was digitized, georeferenced, and imported into LeapfrogMC to generate a high-resolution geological model of the mineralized system hosted within the antiform. The model illustrates the discovery of gold-bearing hydrothermal breccias and “crack-and-seal” quartz veins within a folded felsic lapilli tuff sequence.
Key highlights of the 3D model include:
- Gold intervals ranging from 0.200 ppm to 11 ppm, grouped into vertical sections by grade.
- An arched antiform geometry in a “saddle reef” shape, consistent with repeated zones of gold concentrations.
- A 600-meter mineralized corridor extending from GR-23-08 to GR-25-08.
- Mineralization traced to approximately 40 meters depth, remaining open laterally and at depth.
The Leapfrog model confirms the effectiveness of the 2023 and 2025 drilling campaigns in targeting the structure:
- 14 out of 16 holes yielded values ≥ 0.3 g/t Au
- The 88% success rate exceeds industry standards for grassroots exploration.
- Confirmation that BGF is drilling within a continuous mineralized corridor.
The company’s 88% success rate exceeds that of most exploration companies at the discovery stage in Canada. Early-stage gold exploration typically generates only 20 to 40% mineralized drill holes, with programs exceeding 50% considered highly successful. Sources: Geological Survey of Canada (GSC) Paper 89-4; Ontario Geological Survey (OGS) Paper 169; CIM Annual Conference – Exploration Decision-Making and Drilling Efficiency.
Analytical procedures used for the drill results followed QA/QC protocols. HQ and NQ core was sawn in half with a diamond saw. One half of the core was sampled and sealed in plastic bags before being shipped for analysis. Standards and blanks were inserted on-site. The other half of the core was placed back in the core boxes and stored in the company’s warehouse in Saint-Simon-les-Mines, Quebec.
Samples were sent to MSALABS, Val-d’Or, Quebec. Each full sample was dried and crushed to 1 kg at 70% passing -2 mm, then divided into 500 g subsamples. Each subsample was then analyzed for gold using a photon-assay instrument using gamma detection.
The 3D Interpretation offers:
- Improved visualization of mineralized continuity across multiple drill sections
- Confirmation of a “saddle reef” geometry, a structural style associated with high-grade gold deposits worldwide
- Refinement of targets for the winter drilling campaign
- Identification of gaps, hinges, and fold repetitions to be tested
- Integration with the 8 km geophysical signature confirmed in the October 17, 2024 release
Recommended Work:
- Lateral extension drilling on the 600 m corridor
- Deeper drilling, beyond the confirmed vertical extent of mineralization
- Structural analysis to identify hinge zones associated with high grades
- Integration of new geophysical, geochemical and historical data
To determine dips, planes and structural parameters to optimize deeper drilling, BGF plans to use a borehole televiewer to determine the dips, planes and structural parameters needed to optimize deeper drilling.
The company believes this 3D interpretation greatly enhances its ability to define, target and extend the gold structures of the Grondin zone.
Jean Bernard, B.Sc., géo., an independent qualified person under Regulation NI 43-101, has reviewed and approved the technical content of this release.
Patrick Levasseur, président et directeur général : Tél. (514) 262-9239
Source: Beauce Gold Fields
