Copper Search Ltd. announced the commencement of a regional airborne electromagnetic (AEM) geophysical survey. The purpose of the AEM survey is to identify potential shear-hosted ISCG mineralisation at the Peake Project; (ISCG or Iron-Sulphide-Copper-Gold). The AEM survey can identify conductive rock units such as massive copper sulphides, graphitic or pyritic shale units, and groundwater, and assists with interpreting lithology and structures.

The planned 1,500 line-kilometre AEM survey will cover three areas in the northern half of the Peake Project, on the Mt Denison, Spring Hill and Anna Creek tenements. These areas have been identified as prospective for copper mineralisation as part of the detailed project review and re-logging of the historical drill core completed by the Copper Search exploration team. The interpretation of structures considered favourable to host ISCG mineralisation utilised a litho-structural analysis of the Peake Project completed by PGN Geoscience in 2022, leveraging the new magnetic and radiometric data from the SA Government-funded Gawler Craton Airborne Survey (GCAS) collected during 2017-2019.

The results of the survey will inform follow-up regional programs to identify potential drill targets in the northern half of the Peake Project. Follow-up work will be conducted in parallel to drill testing high-priority IOCG targets (IOCG or Iron-Oxide-Copper-Gold) planned to commence in late March in the southern half of the Peake Project. The Company intends to inform the market once the results are interpreted fully, ground-checked, and exploration plans have been formulated.

AEM surveys application to identify ISCG mineral systems Shear-hosted ISCG deposits are related to IOCG deposits, simply put ISCGs have more sulphur than IOCGs, thus forming iron sulphides in preference to iron oxides. ISCG deposits are typically high grade (up to 5% Cu) but not easily identified as a gravity anomaly as they tend to be narrower and more elongated than a typical IOCG deposit. ISCGs also contain massive sulphides due to the abundance of sulphur and respond to electromagnetic geophysical surveys as they have connected sulphides that are chargeable.

IOCGs have disseminated sulphides, and IP (Induced Polarisation) surveys and/or gravity measurements are more effective for identifying these.