Heavy Rare Earths (ASX: HRE) has identified high-grade silver and base metal mineralisation at the Prospect Hill Project in South Australia following a comprehensive review of historical drilling data spanning more than four decades.
The re-appraisal has confirmed significant intervals of silver, copper, zinc, and lead alongside previously reported high-grade tin.
Historical drilling at the South Ridge prospect returned standout results including 1 metre at 282 grams per tonne silver, 1.87% copper, 3.48% zinc, 3.16% lead and 2.9% tin from 14m.
Additional drilling confirmed tin mineralisation over 500m of strike and to depths of 120m, with high-grade intersections such as 3m at 4.85% tin.
Broad Polymetallic Potential
Heavy Rare Earths said the historical database demonstrates extensive anomalous silver and base metals associated with structurally controlled tin mineralisation at South Ridge.
The company noted that the combination of metals — including uranium, scandium, dysprosium, yttrium, rare earths and tin — enhances HRE’s broader commodity exposure.
The Prospect Hill project comprises three tenements covering 75 square kilometres, hosting outcropping rocks of the Curnamona Craton’s Mt Painter and Mt Babbage inliers.
The company is planning geochemical outcrop sampling, trenching, mapping, and surveying ahead of its maiden drill program, supported by a database that includes 350 rock samples, 4,520 soil samples, 40 trenches, and 71 reverse circulation holes.
Path to a Maiden Resource
Heavy Rare Earths said the upcoming drilling campaign will be directed at upgrading South Ridge to a JORC-compliant mineral resource estimate, and will also test for extensions to known tin and polymetallic mineralisation at depth and along strike.
Chair Gabriel Chiappini said the analysis shows Prospect Hill “appears to have strong potential as a polymetallic deposit” and provides a strong platform for resource definition.
“The prior array of drill hole assay results further enhances the company’s commodity exposure, which also includes uranium, scandium, dysprosium, yttrium, rare earths, and tin,” he said.
“We understand that the South Ridge project is predominantly a Tin prospect, however we plan on testing the prospectivity of these additional metals by way of a maiden drilling program at South Ridge.”
The company believes recent board appointments, including Amanda Buckingham and Graeme Morissey, strengthen its governance and oversight as it accelerates work at Prospect Hill.
