CASE STUDY

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"At the Frotet project in Quebec, CGI's 3D inversion models were integral in imaging gold-bearing structures within sulphidized intrusive rocks that are completely concealed by glacial deposits and lakes. From their models, we were able to target small chargeable zones which ultimately led to the Regnault discovery in March, 2020."

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Francis MacDonald‍

Executive Vice President of Exploration, Kenorland Minerals

January 2020

3D DCIP Inversion at the Frotet Gold Project

Located in the prolific Frotet-Evans Greenstone Belt of Quebec, Kenorland Minerals’ Frotet Project targets high-grade orogenic gold and volcanogenic massive sulphide (VMS) mineralization. To accurately map these complex structures, CGI was engaged to perform high-resolution 3D inversion of Direct Current Induced Polarization (DCIP) data collected across 27 line-kilometers of challenging lake-covered terrain.

CGI’s proprietary technology utilized sophisticated ocTree mesh discretization, allowing for the precise modeling of detailed geological boundaries and active topography while maintaining computational efficiency. By applying this advanced 3D approach—rather than traditional, simplified 2D methods—CGI produced a high-fidelity subsurface model that effectively minimized data misfit and eliminated common geometric distortions.

The inversion successfully identified a significant, high-priority anomaly characterized by coincident high chargeability and conductivity near the surface. Crucially, the 3D model revealed a second, deeper resistive lobe extending to the southwest, providing Kenorland with a clear, multi-dimensional framework for their subsequent drill targeting campaign.

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