Gidgee North

The Gidgee North project is located approximately 640km northeast of Perth in the Murchison region of Western Australia. The project comprises tenements E53/1920 and E51/2032, and the Geoff Well farm-in project (E53-1832-I), covering approximately 146 km² of the Gum Creek greenstone belt. The greenstone belt forms a broadly sinusoidal belt some 100km long and 24km wide within the Youami Terrane. The Gum Creek greenstone belt has historically produced over 1 Moz of gold^1,2.

Previous exploration over the Gidgee North Project was largely focused on near-mine environs or known shear zones, with more regional exploration comprising limited, shallow rotary air blast (RAB) or air core (AC) drilling and soil geochemical sampling programs. However, a review in the June quarter of 2025 found that much of the historic geochemistry is not fit for orogenic gold exploration and areas of transported cover may not have been adequately tested.

The Company has recently re-examined earlier acquired airborne geophysical data in conjunction with an interpreted bedrock geology map of the whole Gum Creek greenstone belt³ to generate a series of conceptual targets. An updated regolith interpretation of these areas will be used to guide field mapping and soil sampling to test gaps in previous work.

In February 2025, Westar drilled two deeper RC holes into coincident magnetic and gravity “bullseye” anomalies at Mageye on E53/1832-I⁴, following encouraging Ag, As, Ba, Bi, Mo, Sn, Te, and W anomalism in bottom-of-hole samples in an earlier air core program. Although assays from the RC drilling did not encounter gold or copper mineralisation, they did show highly anomalous molybdenum and bismuth values suggesting proximity to a potentially mineralising granitic intrusion. Westar is planning to carry out an air core drilling across the Mageye anomaly to obtain bedrock samples for pathfinder geochemistry. These data will be used to vector towards any gold-rich parts of the system that may be present.

Detailed analysis of SkyTEM AEM data flown over the project by Panoramic resources in 2015 identified multiple conductors over the Gidgee North Project. These conductors  are potentially analogous to the nearby Altair Cu–Zn–Ag deposit held by Horizon Gold (ASX: HRN), which reportedly hosts an Inferred Mineral Resource Estimate of 7.0 Mt @ 1.8% Zn, 0.5% Cu, 5.0g/t Ag  for 130,000t Zn, 30,000t Cu, and 1.1Moz Ag⁵. The Geoff Well farm-in contains historical drilling at the Vela prospect with assays including 20m @ 0.17% Zn in GVER001 and 8m @ 1.12% Cu in GVER010.

Westar has carried out several small programs of proof-of-concept VMS drilling based on EM conductors, noting the similarities of the Vela and Geo prospects with the nearby Altair deposit. This work is currently being re-evaluated to determine if some of the targets at Gidgee North have been inconclusively tested.