AuKing Mining Ltd (ASX:AKN) is encouraged by initial results from its metallurgical test-work program for Onedin deposit within the Koongie Park Project in northeast Western Australia.
The initial test-work has established the following:
- The existence of secondary carbonate species in the Onedin mineralised zone; and
- The potential to achieve recovery rates (>75%) for the copper, zinc and other minerals hosted within those carbonates.
Looking ahead, further results from these tests should be available within the next few weeks and once an optimal recovery strategy has been established, AKN will kick off larger-scale tests utilising the extensive core sample inventory created from drilling last year.
“That’s why we went after Koongie Park”
AKN CEO Paul Williams said: “AKN is pleased with initial results from its metallurgical test-work program at Onedin, which has secured Commonwealth R&D registration.
“We have established the existence of carbonate minerals in the Onedin system and initial leaching tests have shown recovery rates of at least 75% in those carbonates.
“That’s why we went after Koongie Park in the first place!
“The test-work program is ongoing and the current focus of test-work is to identify a suitable means of processing the significant levels of iron oxides/hydroxides in the weathered part of the Onedin deposit, with results from that activity available shortly.”
Test program
Stage 1 of the Onedin test-work program is being conducted in conjunction with Perth-based Simulus Laboratories and involves the following:
- Optimisation of reagent usage and doses;
- Initial processing kinetics;
- Demonstration of economic metal recoveries;
- Comparison with conventional process treatments; and
- Likely final product options.
Commonwealth R&D Application
AKN had previously lodged an R&D tax incentive application with AusIndustry for the Onedin metallurgical test-work program.
That application has since achieved registration and, subject to final processing from the Australian Taxation Office, a refund in excess of $550,000 is expected in relation to research works completed during AKN’s 2021 financial year.