KGL’s 3D Inversion Model Reveals Deeper, Larger Mineral System at Jervois

Exploration Breakthrough at Jervois

KGL Resources (ASX – KGL) has announced a significant advancement in its exploration strategy at the Jervois and Unca Creek tenements, driven by the application of integrated 3D inversion modelling. This sophisticated geophysical approach combines multiple datasets, including gravity, magnetics, magnetotellurics (MT), and detailed drilling information, to produce a more comprehensive and accurate picture of the subsurface geology.

Over the past decade, KGL has accumulated extensive geophysical and geological data, but until now, these datasets were analysed largely in isolation. The new integrated modelling, developed in partnership with Viridien’s Multiphysics team, overcomes previous computational limitations by jointly inverting multiple physical properties. This has enabled the identification of several new exploration targets and enhanced confidence in previously known anomalies.

Key Findings and Target Areas

The modelling highlights a series of high-priority targets concentrated along the southern extent of the J-fold structure, a major geological feature controlling mineralisation. Notably, the central J-fold axis (Area 1 prospect) and parallel trends near Bellbird and Rockface deposits have emerged as compelling zones for further investigation. These targets are characterised by coincident low resistivity, high magnetic susceptibility, and high density, signatures consistent with mineralised systems.

Importantly, the integrated 3D inversion has revealed a deep-seated, low-resistivity anomaly extending beyond 5 kilometres depth beneath the central J-fold, interpreted as a major structurally controlled feature potentially linked to mineralising fluid pathways. This suggests that the Jervois deposit hosts a significantly larger and deeper mineral system than previously understood, opening new avenues for resource growth.

Strategic Exploration Program

KGL has outlined a staged exploration program aligned with these findings. In the short term, the focus is on infilling underutilised processing capacity by targeting low-risk open pit extensions within the existing Jervois tenement. Medium-term plans include drilling deeper targets and expanding exploration into the adjacent Unca Creek tenement, where promising trends such as Becana–Pioneer and Hamburger Hill have been identified. Long-term opportunities hinge on further geophysical surveys and underground development to access deeper mineralisation.

Follow-up activities will include additional magnetotelluric surveys to fill data gaps, downhole electromagnetic surveys to refine conductor mapping, and targeted drilling campaigns to test the new high-priority targets. These efforts aim to improve drill targeting precision, reduce exploration costs, and ultimately extend the mine life beyond 20 years.

Implications for KGL and the Market

This integrated modelling approach represents a technological leap forward in KGL’s exploration capabilities, leveraging advances in computing power and geoscientific expertise. By combining multiple geophysical datasets with geological and geochemical information, KGL is better positioned to unlock the full potential of the Jervois mineral field, a polymetallic system with copper, silver, gold, and magnetite mineralisation.

For investors and analysts, these developments signal a potentially transformative phase for KGL, with the prospect of resource expansion and mine life extension. However, the ultimate value will depend on the outcomes of upcoming drilling and survey programs, which will test the validity of these geophysical targets.