Warriedar Resources (ASX:WA8) stakes a major claim in Australia’s open-pit antimony race

In the rugged heart of WA’s Murchison region, a little-known deposit is putting Australia on the global antimony map – and not from the usual underground suspects.

Warriedar Resources (ASX:WA8) has just unveiled the country’s largest open-pit antimony resource at its Ricciardo deposit, part of the broader Golden Range project.

With antimony prices surging amid rising geopolitical tensions and constrained Chinese supply, Ricciardo’s timing couldn’t be better.

Key Highlights

• 60,300 tonnes contained antimony (Sb) – largest open-pit Sb resource in Australia
• 1.96Moz AuEq – a 107% increase in gold-equivalent ounces
• Initial metallurgical tests confirm production of a high-grade Sb concentrate
• First-ever antimony-focused drilling now underway

According to Warriedar Resources Managing Director Amanda Buckingham, the breakthrough comes from a systematic reinterpretation of historical drilling data.

“This is an undeniably exciting milestone for Warriedar,” she said. “Through a diligent and systematic evaluation of historical drilling data, we have defined Australia’s largest open-pit antimony resource – from a standing start.”

Indeed, what started as a gold-focused exploration campaign at Ricciardo has grown into a dual-pronged strategy, uncovering thick, high-grade antimony mineralisation including standout intervals like 12.7m @ 6.03% Sb.

Metallurgical testwork suggests concentrate grades approaching 49% Sb are achievable, with recoveries of 81%.

Measured Group’s updated Mineral Resource Estimate has reclassified Ricciardo to 12.2Mt @ 0.5% Sb, alongside 19.8Mt @ 1.63g/t gold, with a robust 2.5g/t AuEq grade for open-pit material.

That makes Ricciardo a rare beast – a shallow, dual-commodity deposit with room to grow.

Drilling is now targeting high-grade antimony shoots beneath the Ardmore pit, an area never before drilled specifically for the critical metal.

It marks a strategic shift, as Warriedar leans into a global push for new supply chains in battery and defence-critical minerals like antimony.

This isn’t just a speculative punt.

Ricciardo sits on a granted mining lease, near processing infrastructure, with supportive metallurgy and resource classification.

That combination vaults it ahead of most antimony hopefuls still stuck at scoping stage.

As Buckingham noted, “We will undertake this work in parallel with our ongoing primary focus, which is further growing the existing gold resources… within the highly prospective 25km-long ‘Golden Corridor’.”

Gold may still be the primary prize, but Ricciardo’s antimony edge gives Warriedar a compelling second string – one that few others can match.

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