Geochemical Exploration On The St-Robert Bellarmin Property

QUEBEC - Leopard Lake Gold Corporation reported on the Soil-Gas geochemical survey carried out in the area of the former St-Robert Metals mine, and more specifically in the South mineralized zone. The survey was realized as part of an FRQNT-MRNF-Leopard Lake Gold Corp partnership to develop and test a geochemical method for detecting hidden sulphide mineralized masses under Quaternary glacial sediments and forest soils covers in Appalachian and Abitibi mineralized zones. Unlike traditional soil-geochemical methods, which are impacted by glacial dispersal processes, among other factors, anomalies detected by the Soil-Gas method are generally apical to the mineralized bodies. In addition to being able to detect mineralized bodies, this method makes it possible to validate and prioritize electrical chargeability (IP) anomalies in order to avoid drilling graphitic barren zones.

The geochemical survey, carried out by the team of Prof. Richer-LaFlèche (INRS) and PhD student Antoine Cukovic (INRS), was initiated in the summer of 2023. The methodological validation section was carried out on either side of the southern mineralized zone, which contains several Pb-Ag-Bi-Zn-Au and W polymetallic quartz veins. The survey consisted of gas sampling in the vadose zone of the soils and analysis using highly sensitive electrochemical detectors.

The data show a strong H2S, SO2, CS2 and H2 anomaly located in the center of the southern mineralized zone. This anomaly is perfectly centred on the hydrothermal veins intersected by drilling carried out by JAG Mines Ltd. Unlike the orogenic-type gold mineralization studied in Abitibi, the St-Robert South mineralized zone shows no CO2 enrichment. This is consistent with the absence of carbonation in the vein host sedimentary rocks.

Consequently, LLGC is proud to have contributed to a strategic scientific project for optimizing mining exploration in northern terrains affected by variable thicknesses of Quaternary overburden. LLGC plans to relaunch the Soil-Gas project, focusing on the central and northern mineralized zones of the former St-Robert-Metals mine.