Preliminary Results De-Risk Senegal High-Grade Discovery
Chesser Resources Limited (ASX:CHZ) has received excellent results from preliminary bottle roll metallurgical test work from Area A at its flagship Diamba Sud Gold Project in Senegal.
Bottle roll test work was undertaken by ALS Metallurgy on 10 sulphide mineralisation fresh rock samples collected from Area A drilling.
The results highlight straightforward, non-refractory metallurgical characteristics, with a likely processing route incorporating a simple, industry standard cyanide leach circuit.
Managing Director and CEO, Mike Brown, saida 48-hour direct cyanide leach averaged a gold recovery of 96%.
“These preliminary metallurgical results are extremely encouraging and are a significant step in de-risking Chesser’s high-grade gold discovery at Diamba Sud,” Mr Brown said.
“Clean, non-refractory mineralisation with very high gold recoveries from direct cyanidation highlights the potential for a simple, industry standard gold processing flow sheet.
“These samples from Area A are sulphide mineralisation in fresh rock, which is near surface, and based on current drilling are representative of rock type and mineralisation intersected to date.
“Further metallurgical test work is planned upon completion of the current drill program and will include Area D as well as advancing potential optimisations such as grind size and residence times.
“With drilling advancing on the 20,000m drill programme at Diamba Sud we look forward to updating the market with results when they are received.”
Results from the bottle roll testing show very high recoveries from all samples, with low to moderate cyanide and lime consumption.
Average leach recovery was 96.2%. The high-grade samples returned the highest total recoveries (98.0% – 99.4%).
The lowest recovery was returned from the medium grade carbonate sample. The leach residue of this sample and the low-grade sedimentary breccia is being subjected to residue testing to determine the nature of the gold that was not extractable.
The high recoveries show that the gold is likely to be recoverable via a simple cyanide leach process flow sheet, with no indications of refractory gold.
