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Heavy Rare Earths aiming to unlock SA’s critical minerals potential

Last year marked a period of transition for Melbourne-based explorer Heavy Rare Earths (ASX:HRE).

The company assembled a new portfolio of critical minerals projects in South Australia’s Curnamona Province.

Chartered accountant and corporate consultant Gabriel Chiappini joined the board, first as a director and then became chairman. Meanwhile, former Warriedar Resources directors Dr Amanda Buckingham and Graeme Morrissey joined the board following Warriedar’s acquisition by Capricorn Metals (ASX:CMM).

Now that the restructure is complete, Chiappini said 2026 was all about exploration.

HRE’s main focus is Prospect Hill, which it has described as SA’s largest known and most advanced tin project.

The project covers 75 square kilometres of ground on the north-western margin of the Curnamona Craton.

HRE acquired 80% of the project from Havilah Resources (ASX:HAV) last year, with the acquisition including a database of 71 reverse circulation holes, 19 percussion holes, 40 trenches and numerous soil, stream and rock samples over six main tin prospects.

The most advanced prospect is South Ridge, where previous drilling has outlined steep-dipping tin mineralisation over 500m of strike and up to 120m depth and remains open down-dip and along strike.

Previous drilling has returned 3m at 4.85% tin from 44m; 5m at 3.32% tin from 84m; and 6m at 2.33% tin from 14m.

While off its February highs of +US$57,000/t, at over US$46,000/t tin is sitting close to record levels as experts tip major supply shortages in the years to come.

Drilling to kick off

HRE is preparing to kick off a 2500m drilling program, which Chiappini said should lead to a maiden resource.

“Our main drilling thesis here is really to extend the mineralisation below the current drill holes, which (were) quite shallow,” he said during a webinar last week.

“The previous owners drilled not further than, say, 80-90m. It is open at depth, and we plan to drill beyond that previous drill hole length, together with drilling along strike.”

Chiappini said the aim was to define a resource of 500,000 tonnes to 1Mt grading 1-2% tin.

Previous drilling also showed the project is prospective for silver and base metals, with results of 1m at 282 grams per tonne silver, 1.87% copper, 3.48% zinc, 3.16% lead and 2.9% tin.

“They’re not our main prospects, but obviously, if we’re able to get some credits as a result of that, we’ll expand the program,” Chiappini said.

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Source: Stockhead