DEG has released initial metallurgical testwork for the Brolga Zone, within the Hemi discovery, part of the Mallina Project in the Pilbara of Western Australia. Tests achieved 93.0% recoveries for oxide mineralisation using carbon in leach (CIL) and 96.3% for fresh mineralisation using sulphide flotation, pressure oxidation (POX) and CIL. Given the known partly refractory nature of other deposits within the Mallina Project, it was anticipated that Hemi would require further processing to unlock gold in sulphide mineralisation. While preliminary in nature, Argonaut regards these results to be a positive outcome and better than our previous modelled recoveries of 89-93% from POX and CIL. DEG is actively expanding the Hemi deposit with six drill rigs operating in the region. Further drill results released recently have extended the Brolga Zone to the south and southwest.
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