Byrock Project Yields Six New Magnetic Copper-Gold Targets and Significant Chargeability Anomaly

Exploration Momentum Builds at Byrock Project

Copper Search Limited has unveiled positive results from its initial geophysical surveys at the Byrock Project, located in the Lachlan Fold Belt of New South Wales. The company’s recent induced polarisation (IP) and airborne magnetic surveys have identified multiple compelling targets, including a significant chargeability anomaly at the CS03 prospect, which suggests the presence of sulphide mineralisation at a relatively shallow depth of 120 metres.

The Byrock Project, covering nearly 2,000 square kilometres northeast of Bourke, lies within a highly prospective geological corridor known for world-class copper-gold deposits such as Newcrest Mining’s Cadia mine and Evolution Mining’s Northparkes and Cowal operations. This regional context underpins Copper Search’s confidence in the project’s potential to host economic-scale mineralisation.

New Magnetic Targets and Geophysical Insights

Complementing the IP results, the airborne magnetic survey has delineated six new “pipe-like” high-magnetic response targets interpreted as potential copper-gold porphyries. These targets will be further refined through infill gravity surveys designed to differentiate felsic intrusions, considered more prospective, from mafic intrusions. Gravity surveys offer a cost-effective means to prioritise drill targets ahead of more expensive exploration stages.

Passive seismic surveys have also played a crucial role, confirming the depth to crystalline basement at key prospects such as T47 and T55. While the IP survey was ineffective at T55 due to conductive black soil cover, passive seismic data verified the target’s depth at around 300 metres, enabling Copper Search to plan gravity surveys to better assess this high-reward target.

Strategic Next Steps and Expert Collaboration

Managing Director Duncan Chessell emphasised the effectiveness of the exploration methods deployed so far, noting that the company has successfully ruled out less prospective targets, focusing resources on those aligning with Copper Search’s criteria for economic potential. The next phase will involve targeted ground truthing, detailed mapping, geochemical sampling, and close-spaced surface geophysics to confirm and prioritise drill targets.

Additionally, the company has benefited from a desktop tectonostratigraphic review by experts including Professor David Selley and Dr Paul Kitto, which has sharpened the understanding of structural controls in the region. Copper Search also plans to apply for NSW Government co-funded grants to de-risk exploration of deeper targets such as the T55 porphyry prospect.

A Project with Multiple Mineralisation Styles

The Byrock Project remains open to various mineralisation styles, including orogenic gold, copper-gold porphyry, and Cobar-style polymetallic deposits. The significant chargeability anomaly at CS03 is particularly encouraging as it resembles Cobar-style sulphide mineralisation, which historically supports high-grade, vertically continuous orebodies amenable to underground mining.

With drilling planned for later in 2025, Copper Search is positioning itself to unlock the value of these validated targets, leveraging a combination of modern geophysical techniques and expert geological interpretation in a region with proven mining pedigree.