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- Kalamazoo Resources (KZR) reports “outstanding gold recoveries” returned from initial test work on four metallurgical composites from the large Mt Olympus deposit contained within the Ashburton Gold Project, Western Australia
- The aim of the test work was to determine whether the Mt Olympus resource would be amenable to the production of a high-grade gold sulphide concentrate
- The company hit “excellent gold recovery into an initial rougher concentrate of up to 94per cent with gold in concentrate grade averaged 31.8 g/t Au across all four composites with a maximum value of 39.2 g/t Au
- The next phase of test work will include additional flowsheet elements to optimise recovery and determine final gold recoveries
- Kalamazoo Resources (KZR) is trading up 7.14 per cent to 30 cents
Kalamazoo Resources (KZR) reports “outstanding gold recoveries” returned from initial test work on four metallurgical composites from the large Mt Olympus deposit contained within the Ashburton Gold Project, Western Australia.
The test work aimed to determine whether the Mt Olympus resource would be amenable to producing a high-grade gold sulphide concentrate via an industry-standard crush-grind-float processing circuit, commonly used worldwide on many refractory style gold deposits.
Kalmazoo said initial results indicate that subject to completion of a robust financial business case, production of a high-grade gold concentrate is likely to represent the most straightforward, technically least challenging, and lowest capital-intensive method of extracting significant value from the Ashburton Gold Project.
“Given these positive results, we have immediately commenced the next phase of the metallurgical program, which will optimize the flowsheet to enhance performance even further,” Kalamazoo’s Executive Director Paul Adams said.
The company hit “excellent” gold recovery into an initial rougher concentrate of up to 94 per cent with gold in concentrate grade averaged 31.8 g/t Au across all four composites with a maximum value of 39.2 g/t Au.
There was no re-circulation of tails back to the float circuit or gravity test work in this initial scouter test work.
As such, Kalamazoo considers the results from this initial phase as minimum values. The next step of test work, discussed below, will include additional flowsheet elements to optimize recovery and determine final gold recoveries.
Kalamazoo is exceptionally pleased with the outcome of this early test work at Mt Olympus.
Some early encouraging inferences on the relationship between gold/sulphide sulphur ratio and the concentrate gold grade have been made, demonstrating that a rougher concentrate followed by a cleaner stage flow sheet has a very positive effect on the ultimate grade of the concentrate.
This test work has also demonstrated that for all composites, silica rejection and sulphur grade in concentrates are consistent throughout the various zones chosen for this test work.
Kalamazoo has already commenced an optimization program to improve these initial test work results. This includes obtaining a detailed cleaner concentrate assay to determine any harmful elements and identifying further opportunities to optimize results.
Another step would be for Kalamazoo to incorporate its gold deportment studies into the next phase of the metallurgical test work.
Kalamazoo Resources (KZR) was trading up 7.14 per cent to 30 cents at 10:35 am AEDT.
