Rox Resources Targets November for Youanmi DFS after Strong Gold Recoveries and Assay Results
Rox Resources (ASX: RXL) has achieved another significant breakthrough as it continues to progress its Youanmi gold project in Western Australia towards development.
Just days after announcing positive assays from recent drilling at the project, Rox has reported gold recoveries of 94.0% and 95.8% from Albion oxidative leaching metallurgical test work on concentrate samples.
Additional work is underway to further optimise the grind size and oxidation requirement, as the company progresses its Youanmi definitive feasibility study (DFS) ahead of a targeted release in November 2025.
Metallurgical Study Focus
Rox had a major focus on metallurgical studies during the first half of 2025, seeking to validated potential gold recoveries and confirm design parameters for the Youanmi process flowsheet.
The metallurgical assessment has so far included comminution, bulk flotation, flotation tailings leach, ultrafine grinding specific-energy usage, baseline Albion oxidative leaching, and commencement of grind size and sulphur oxidation optimisation of the pyrite-dominant ore.
Rox has also confirmed it has appointed project management firm Increva to oversee and deliver construction of key infrastructure at Youanmi, with a particular focus on supply and construction of the plant, power station, and tailings dam construction.
The company believes Increva’s extensive experience in all aspects of the project life cycle from feasibility through to construction and commissioning makes it uniquely suited to the task at hand.
Strong Gold Recovery Potential
Chief executive officer Phill Wilding said the test work results had highlighted the potential for more than 90% total gold recovery from the Youanmi orebody.
“Our goal is to ultrafine grind the concentrate to 10-12 microns, partially oxidise the sulphides via the Albion process in open-air tanks, and achieve overall gold recoveries of between 90 and 92%,” he said,
“The results achieved to date represent a significant step towards achieving this goal and delivering maximum value from our Youanmi gold project.”
“On-site works and activity in the labs have been progressing at a rapid pace and we look forward to providing further updates ahead of the anticipated delivery of our DFS in November.”
Positive Assay Results
Rox further boosted Youanmi’s progress earlier this week, with positive assays from brownfield and regional drilling identifying multiple high-grade gold intersections while expanding known mineralisation.
Those results came on the back of the company’s recently announced indicated and inferred) mineral resource estimate (MRE) of 2.2 million ounces of gold at 5.6 grams per tonne.
“We are excited to have discovered multiple gold intersections outside the resource south of the main pit, which further highlights the potential to grow the system at Youanmi,” Mr Wilding said.
“Our drilling program has also returned high-grade assay results from areas adjacent to the Youanmi and Bunker pits, further solidifying our confidence in the resource expansion potential of the area.”