Infinity hits 51% antimony at Victorian project

Infinity Mining has unearthed high-grade rock chip samples grading up to 51.4 per cent of the critical metal antimony at its Walhalla South Extended project in eastern Victoria.

Four surface rock chip assays returned between 21.6 per cent to 51.4 per cent antimony, along with anomalous gold up to 0.88 grams per tonne (g/t).

The mineralisation is associated with a distinctive, circular magnetic target stretching across about 1.5km, that has never been subjected to a spinning drill-bit.

The 1.5km-wide magnetic high was identified from magnetic data gathered by Geoscience Australia. It is interpreted as a sub-vertical intrusion, with northwest-trending magnetic linears suggesting either dykes or faults.

Infinity discovered the visible mineralisation within the set of four stibnite-quartz-sericite surface grab samples and rushed them to the lab for multi-element analysis. The results have not disappointed, with early signs pointing to a possible intrusion-related gold system (IRGS) at depth.

The Walhalla Extended South project is proximal to multiple Devonian intrusions and lies about 100-kilometres southeast of $2.25 billion ASX-listed Southern Cross Gold’s Sunday Creek project, which hosts an exploration target of 1.7 to 2.6 million ounces of high-grade IRGS gold and antimony.

Infinity says several chip samples show possible breccia textures, which it believes is very encouraging as the Sunday Creek deposit contains breccias associated with antimony-gold mineralisation.

The Walhalla Extended South project sits near the town of Walhalla, with the region playing host to several historic goldfields such as the Walhalla goldfield. The region is prospective for IRGS deposits and epizonal orogenic gold-antimony deposits similar to Sunday Creek and the renowned Costerfield mine.

The high-grade underground Costerfield gold-antimony mine produced 43,346 ounces of gold and 1282 tonnes of antimony in 2024, equal to 54,805 gold-equivalent ounces.

These stunning antimony assays confirm the presence of high-grade antimony with anomalous gold, occurring directly above a distinctive circular magnetic target. Along with our other exploration licences in the Melbourne zone, this target lies in an area of Victoria that is very prospective for antimony-gold deposits.

The company says it plans to expand its exploration efforts at the project now to include geological mapping and more geochemical sampling in coming weeks.

Infinity is considering the acquisition of further detailed magnetic data such as a drone magnetic survey or induced-polarisation survey to home in on more accurate depth modelling of the target prior to drill testing.

Antimony is a critical mineral that has skyrocketed in value since the imposition of Chinese export controls and a specific export ban to China’s geopolitical enemy, the United States.

Targeting the critical mineral with an export ban has significantly impacted global supply and resulted in a considerable leap in price to about US$56,000 per tonne currently.

Demand has increased for the critical mineral due to antimony’s use as a heat retardant and in renewables such as solar panels.

Infinity’s broader portfolio spans 3700 square kilometres across highly prospective regions, including New South Wales’ Macquarie Arc, Victoria’s Melbourne Zone and Western Australia’s Pilbara and Central Goldfields.

The company’s projects are strategically located near established mining operations, including its flagship Cangai copper project in northern NSW. Management believes Cangai is well-positioned for economic development in a pumping copper and gold price environment.

Infinity recently identified a potential porphyry system at its Bogong copper project in NSW, which it plans to prioritise alongside its emerging Victorian antimony-gold projects. It also recently acquired a cutting-edge LiDAR survey previously completed at its Monkey Gully gold project in eastern Victoria which revealed a staggering 263 historical mine workings at the site.

The high-tech revelation spotlights a further compelling gold target for the company around the margin of a Devonian intrusion. Infinity is on the hunt for intrusion-related gold systems (IRGS) and will prioritise the new target for further exploration.

Large numbers of historical workings indicate old-timers invested a significant effort in the area which is always a good sign as it points to the likelihood of mineralisation being found and the possibility of plenty remaining. Modern exploration methods will provide an excellent opportunity to uncover any still lurking beneath cover.

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