Key Highlights

  • Right Resources achieved 89.9 per cent gold extraction after 24 hours in a cyanide bottle-roll test.
  • Falcon gravity concentration produced concentrate grades of about 29 to 66g/t gold.
  • Metallium reported copper up to 6.88 per cent at its Mt Storm prospect.
  • Metallium ranked its Eldorado prospect as second priority behind its Big One deposit.

Right Resources Limited (ASX:RRE) and Metallium Limited (ASX:NFM) released updates on 27 October 2026. The reports cover preliminary metallurgical testwork at the Pilot gold project and exploration at the NWQ copper project, along with a conductor identified at the Harts Range heavy rare earths project.

Latest Developments

Right Resources reported that a conventional cyanide bottle-roll test on a granodiorite-tonalite composite from the historic Pilot mine mullock dump achieved 89.9 per cent gold extraction after 24 hours, at a grind of P80 75 microns. Extraction at the end of the 48-hour test was 88.1 per cent, with low reagent consumption. Gravity concentration with a Falcon unit upgraded the gold, with concentrate grades calculated at about 29 to 66 grams per tonne. The company said the results suggest a possible coarse-gold component and plans further work on gold deportment.

Metallium reported assays from its May 2026 field program at the historic Mt Storm prospect, with pit and dump samples returning up to 6.88 per cent copper. Sequential leach tests showed high recoveries of acid-soluble copper, supporting potential amenability to conventional acid leaching. A prospectivity review of more than 20 copper prospects across its 977-square-kilometre NWQ tenement package ranked Eldorado as the second-highest priority behind the Big One deposit.

Metallium also reported independent modelling at its Harts Range heavy rare earths project, which defined an untested bedrock conductor about 240 metres below surface within EL 34147. The conductor is interpreted as potentially prospective for copper-nickel mineralisation, and the target was generated from publicly available pre-competitive geophysical data.

Sector Context

Gold recovery testwork is a key step for projects that rely on older mine material, as operators assess whether cyanide leaching and gravity methods can recover gold economically. Copper exploration continues to focus on large tenement packages where prospect ranking helps companies decide where to drill.

Metallurgical testwork and exploration targeting are both early steps in the development of mineral projects. Right Resources' results show how gold can be recovered from mine material using conventional and gravity methods, while Metallium's work is about ranking targets across a large copper tenement and testing geophysical anomalies at a rare earths project. The next stages for each company will depend on the outcome of further testing and drilling.

Risks to Consider

Bottle-roll and gravity results are preliminary and do not replace a full metallurgical program or a pilot test. The Pilot material is a mullock dump, so the ore characteristics may differ from primary resources. Metallium's copper results come from surface and near-surface samples, and geophysical conductors do not confirm mineralisation. Both companies rely on exploration funding, and results may take longer than expected to progress.

What to Watch Next

Readers may follow Right Resources' gold deportment and gravity reconciliation work, and Metallium's drill planning at Mt Storm and Eldorado, as well as any follow-up geophysics at Harts Range.

Final Word

The two updates reflect early metallurgical and exploration work on gold and copper projects. Future testwork results and drilling announcements will show whether these early findings continue, and readers can review those disclosures as they become available.