- Los Cerros (LCL) receives “highly encouraging” results from metallurgical testwork at the Tesorito deposit within its Quinchia gold project in Colombia
- The company says initial results show that all mineralised units are amenable to a conventional cyanide leaching process to recover gold and silver
- This work will feed into the Quinchia Gold Project Preliminary Economic Assessment, which is investigating three broad production base case scenarios for the project
- Los Cerros shares are trading grey at 2.8 cents as of 11:44 am AEST
Los Cerros (LCL) has reported “highly encouraging” results from metallurgical testwork at the Tesorito deposit within its Quinchia gold project in Colombia.
The company is nearing the end of a phase one metallurgical program which is being carried out by engineering company Ausenco.
The program is assessing physical and metallurgical characteristics of the lithology types in the Tesorito deposit as well as the amenability to conventional grinding, gravity, and leach/adsorption processing routes.
Five composite samples totalling almost 200 kilograms were prepared and represent the main mineralised domains at the Tesorito deposit.
Lose Cerros said initial metallurgical results showed that all mineralised units were amenable to a conventional cyanide leaching process to recover gold and silver. The results also suggested the Tesorito mineral processing performance was likely to be typical of high gold and low copper porphyry ores.
According to Los Cerros, the conventional process flow of crush/grind, cyanide leach and carbon absorption for Tesorito mineralisation is more simple in comparison to the pathway described in the Miraflores deposit’s definitive feasibility study, which uses a similar grind size but includes both gravity and flotation stages.
This work will feed into the Quinchia Gold Project Preliminary Economic Assessment (PEA) which is investing three broad production base case scenarios for the project.
The three production scenarios being investigated are the plant being designed and sized based on the Miraflores Underground Reserve, designed and sized on the Miraflores Resource plus a potential high-grade starter pit at Tesorito, and sized and designed based on Total Quinchia Resources.
Managing Director Jason Stirbinskis said Los Cerros’ current focus was on creating value through building confidence in its “substantial bank of established resources” at Quinchia.
“These encouraging metallurgical test results add to that confidence and are an important step to building a PEA around the Quinchia gold project’s potential production scenarios,” he said.
Los Cerros will continue metallurgical test work as the PEA is completed and the project advances further.
Los Cerros shares were trading grey at 2.8 cents as of 11:44 am AEST.