Moho Resources Ltd (ASX:MOH) has received positive metallurgical test results from variability composite samples representing more than 99% of mineralisation within the preliminary pit shell design for its East Sampson Dam (ESD) gold prospect in WA.
The company will now approach toll treaters as the tests offer the confidence that ESD mineralisation is treatable through their mills under normal Goldfields operating conditions.
Master composite metallurgical test-work results are now expected in the fourth quarter of 2020.
Moho Resources managing director Shane Sadleir said: “Moho is very encouraged by the positive metallurgical results on the East Sampson Dam samples, particularly as they represent >99% of mineralisation within preliminary pit shell design and the high overall gold recoveries have been achieved using conventional cyanide leaching similar to standard Kalgoorlie toll treatment plants.”
Shares have been as much as 12% higher to 14 cents intra-day.
Highlights of the results include:
➢ Conventional cyanide leaching yielded 95.6% and 95.9% overall gold recovery replicating standard Kalgoorlie toll treatment processing;
➢ Reasonably high gold recoveries of 41.8% to 52.9% from conventional gravity tests;
➢ Elevated gold recovery via BLEG method for all five weathered composites;
➢ Rapid leach kinetics (reaction rates) within typical reagent consumption allowances;
➢ Rheological tests (flow & deformation of slurry) returned positive results on addition of viscosity modifier; and
➢ High recovery and rapid kinetics indicate that a coarser grind size may be acceptable.
Future test work
A single master composite (MC) will be derived from the variability composites to represent potential mill feed grade and oxidation state as presented by the current preliminary pit shell.
Optimisation test work focused on grind size and leach conditions wiRead More – Source