Medallion says a review of metallurgical testing has confirmed circa 95% gold recovery at its Ravensthorpe project – and it requires nothing more than using the industry standard process.

Medallion Metals (ASX:MM8) engaged GR Engineering to review all historical metallurgical testwork carried out on ores from the Ravensthorpe Gold Project (RGP) to confirm the preferred process route to maximise recoveries.

And the news was very good.

The review returned consistent high metallurgical recoveries of about 94.6% gold, 86.1% copper and 73.3% silver – by using conventional gravity-flotation-carbon in leach process, which produces gold dore and copper-precious metal concentrates.

It also included a gap analysis to identify any additional metallurgical testwork which may be required to support a Definitive Feasibility Study (DFS) level of assessment of the technical and commercial viability of RGP in the future.

“The completion of the metallurgy review is an important step for Medallion to both consolidate the significant amount of work done, and to plan for the future,” managing director Paul Bennett said.

“We’re pleased to have an industry leader in GR Engineering assist us in this regard. The outcomes of their work demonstrates high gold and copper recoveries can be consistently achieved using industry standard processes across lithologies and deposits which has the potential to improve project returns by unlocking the value of the by-products.

“The review findings will assist us in planning the next and final round of metallurgical testwork for RGP, in addition to supporting the upcoming resource update expected in April.”

The company recently reported high-grade gold hits at the Gem deposit that underscored the potential of some 30,000m of drilling to upgrade current resources of about 674,000oz at 2.4g/t gold within the Kundip Mining Centre.

Review findings

The review concluded that an industry standard gravity-flotation-leach process route, such as that used at Silver Lake Resources’ (ASX:SLR) Deflector project, is the preferred option to maximise gold, copper and silver recovery from RGP ores is a positive for the company.

This will make it easier for Medallion to progress feasibility studies and control costs.

Additional testwork will be performed to confirm the potential for use of a coarser grind size.

The company has also started a sighter round of exhaustive leach tests on 19 samples from the Gem Restored deposit and the Ariel and Meridian prospects along with preparations to collect samples for the additional test work recommended by GR Engineering.




This article was developed in collaboration with Medallion Metals, a Stockhead advertiser at the time of publishing.


This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.