Birimian Gold encouraged by Ntiola deposit test work results
THE DRILL SERGEANT: Birimian Gold (ASX: BGS) has received encouraging metallurgical results from laboratory based test work conducted on material from the Ntiola deposit at the company’s Massigui gold project in southern Mali.
The Ntiola peposit is situated approximately 25 kilometeres from the Morila Mine Treatment Plant, which Birimian considers could present a near term opportunity for the company to develop mining operations and truck ore to supplement feed at Morila.
Birimian explained the test work was designed to reflect the Morila Treatment Plant flow sheet with the intention to broadly characterize the metallurgical properties of oxide and primary material types from typical Ntiola gold bearing material.
Three separate 20 kilogram composite samples were prepared from reverse circulation and diamond core material collected during the last drilling program at Ntiola.
One sample represented the oxide material from the central portion of the Ntiola mineralised zone.
The remaining two samples were from primary rock types in the central portion of the mineralised zone.
“Excellent overall gold recoveries and a very high proportion of gravity recoverable gold were observed in both material types,” Birimian Gold said in its ASX announcement.
“Test results record gold recoveries of 98.4 per cent in oxide material and from 80 per cent to 96.5 per cent gold recoveries in primary material.
“Further work is currently underway to determine the distribution of primary material types.
“Exceptional gravity gold recoveries of up to 64.2 per cent in primary rock types are very pleasing given a highly efficient gravity circuit is in operation at Morila.
“High gravity recoveries may imply that significant processing efficiencies and cost savings can be achieved during ore treatment.”
Birimian Gold said it had been encouraged by the preliminary metallurgical results and views them to be a step towards the potential development of the Ntiola deposit.
The results demonstrate material from Ntiola would be amenable to processing through the existing facilities at the Morila gold mine and Birimian indicated it is confident additional test work will further optimize recoveries and refine the processing parameters for Ntiola.
“Multiple drilling campaigns and recent technical studies at the Ntiola prospect have defined what the company believes to be a robust gold mineralised zone amenable to open pit mining and subsequent treatment at the existing Morila processing plant,” Birimian said.
“This is supported by the positive metallurgical test work results, which demonstrate that high gold recoveries can be achieved utilising the nearby Morila processing plant to treat material from the Ntiola deposit.”
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