Transol Corporation Limited is pleased to advise that it has received encouraging results from metallurgical testwork and mineralogical analysis completed on drill core from its flagship Johnnies Reward Gold Project in the Northern Territory. The results confirm that the mineralisation at Johnnies Reward is amenable to processing utilising conventional carbon-in-pulp (CIP) technologies, with excellent gold recoveries of up to 90 per cent achieved. This provides confidence in the future economic potential of the project and, together with results from recently completed drilling and regional exploration and soil sampling, support Transol’s plans to pursue expanded exploration programs at Johnnies Reward in 2013.

Metallurgy

Four composite samples were submitted from recent drill-holes 12JRRC001 and 12JRRC004 to establish that gold is recoverable by traditional CIP (carbon-in-pulp) processing methods.

Process Flow Sheet

The samples were crushed to <3.35mm, homogenised and each individual sample split into three sub samples, for head assay, grind establishment (80% passing -75um) and cyanidation leach testwork. The leach testwork involves a simple bottle roll with the addition of cyanide (NaCN) and lime at around 40% solids. They were monitored and agitated for 48 hours with time series sampling at 2, 4, 6, 24 and 48 hours. The leach solutions and residues were analysed for gold.

Results

Overall recovery of gold was very good with around 90% of the gold in solution after 24 hours in composites 1 and 4.  In composites 2 and 3, about 20% of gold remained in the solid after 48 hours. These have solid (leach tail) grades of 0.50 and 0.33 ppm gold which was not extracted. Finer grinding is expected to increase these recoveries up to 90%. However, leach kinetics were efficient as recoverable gold exceeded 80% after the first six hours. The graph of rate of gold extraction for composite sample 4 is shown in Figure 1 and it can be noted that leach kinetics slow down after 24hrs. Further work will be required on grind sizes and mineralogy. The reagent’s consumptions are within a reasonable range, similar to expected consumption rates at operational sites.

Mineralogy

Composite 4 was chosen for quantitative mineralogical analysis in an attempt to define mineral association with gold and base metal mineralisation. Two samples were produced, a panned (Knelsen) concentrate and a gravity tail. The samples submitted are primarily made up of quartz, accessory magnetite and chlorite/micas, there are minor pyroxenes, amphiboles, garnets and pyrite, pyrrhotite and chalcopyrite.