Infinity hits fresh antimony in historic Victorian gold hub

Infinity Mining has strengthened the company’s case for a new high-grade antimony system in Victoria after boots-on-the-ground fieldwork confirmed a freshly exposed quartz-stibnite vein at its 100 per cent-owned Walhalla South project.

The newly identified and laminated quartz-stibnite veining sits directly within the company’s discovery area, where earlier rock-chip sampling returned eye-catching antimony grades ranging from 21.6 per cent to a standout 51.4 per cent, alongside gold values of up to 0.88 grams per tonne(g/t).

While assay results from the latest rock-chip samples are still pending, visible stibnite mineralisation in outcropping has Infinity confident the results will again confirm ore-grade antimony at surface.

The discovery sits within the Melbourne Zone of eastern Victoria – a proven address for high-grade gold-antimony systems – and adds further weight to the region’s growing reputation as a fertile hunting ground for intrusion-related gold systems and epizonal orogenic deposits.

The Walhalla South project lies near the historic Walhalla goldfield and within a broader district that also hosts Southern Cross Gold’s globally significant Sunday Creek gold-antimony project and Alkane Resources’ high-grade underground Costerfield gold-antimony mine.

Costerfield produced 43,346 ounces of gold and 1,282 tonnes of antimony in 2024, highlighting the economic potential of gold-antimony systems in the Melbourne Zone. Sunday Creek, 100 kilometres to the northwest, meanwhile, boasts an exploration target of 1.7 to 2.6 million ounces of high-grade gold with associated antimony.

Infinity says early observations from the Walhalla South rock chips suggest breccia textures similar to those recognised at Sunday Creek, hinting the company may be closing in on a much larger mineralised system.

Importantly, the quartz-stibnite vein sits within a discrete, circular magnetic high approximately 1.5 kilometres in diameter that has never been tested by drilling. The anomaly, first identified from Geoscience Australia data, appears to outline a sub-vertical intrusive body, with northwest-trending magnetic lineaments potentially marking dykes or fault structures that may have acted as mineralising pathways.

This latest fieldwork, confirming quartz-stibnite veining right where we hit the pleasing 51.4 per cent antimony rock-chip, provides a high-priority target for Infinity. We are operating in an underexplored part of the Melbourne Zone known for hosting multi-million-ounce gold-antimony systems.

The company has now kicked off a systematic soil geochemical sampling program across the target area to map the extent and orientation of the mineralised system and refine drill targets.

Infinity is also engaging with forest managers and key stakeholders to secure approvals for low-impact hand-auger sampling, coupled with further inspection and sampling of historic gold workings across the tenement package.

With antimony firmly on Australia’s critical minerals list – and prices surging to around US$55,000 (A$83,000) per tonne following Chinese export restrictions – Infinity believes its emerging Victorian project could become a valuable addition to its growing east coast exploration portfolio.

Is your ASX-listed company doing something interesting? Contact: matt.birney@wanews.com.au