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AbraSilver Resource Reports Positive Metallurgical Test Results for JAC Zone With up to 93% Silver Recoveries & 91% Gold Recoveries
Toronto, ON - TheNewswire - June 1, 2023 - AbraSilver Resource Corp. (TSX.V:ABRA) (OTC:ABBRF) (“AbraSilver” or the “Company”) is pleased to report positive prel
About this update from Abrasilver Resource Corp.
[{"type":"text","content":"Toronto, ON - TheNewswire - June 1, 2023 - AbraSilver Resource Corp. (TSX.V:ABRA) (OTC:ABBRF) (“AbraSilver” or the “Company”) is pleased to report positive preliminary metallurgical test results for the new JAC zone at its wholly-owned Diablillos property in Salta Province, Argentina (“Diablillos” or the “Project”). The program was completed by independent metallurgical consultants, SGS Canada Inc., at their testing facilities in Lakefield, Ontario. Key Highlights Include: Overall recoveries at the JAC and Fantasma deposits range between 86% - 93% for silver and 82% - 91% for gold. A substantial percentage of the silver at JAC can be recovered by gravity separation which increases overall recoveries. Current testwork confirms that the same process flowsheet can be used to process mineralization from the Oculto, JAC and Fantasma deposits. Milling tests have shown that 150 microns is the targeted grind size for the leaching of the mineralized material at a retention time of 36 hours. Overall silver and gold recoveries could likely be increased further by grinding finer and with higher cyanide concentrations. Further metallurgical testwork and trade-off studies are now underway. John Miniotis, President and CEO, commented, “We are extremely pleased that the metallurgical testwork results at JAC demonstrate excellent recovery rates for both silver and gold. These results show that mineralization at JAC responds very well to conventional processing and recovery technologies, providing highly positive implications for the future development potential of the project. The results will be incorporated into our Mineral Resource estimate and Pre-Feasibility Study which remain on track to be delivered later this year.” Favorable Recovery Rates vs. Prior Testwork At the JAC and Fantasma deposits the silver minerals (chlorargyrite and iodargyrite) are easier to release by grinding, and are more sensitive to cyanide leaching as they occur in argillic alteration, whereas at Oculto they are mostly held more complexly in vuggy silica host rock. Table 1 - Summary of Metallurgical Testwork Results for JAC and Fantasma Deposits Testwork on JAC and Fantasma samples showed that gravity separation before cyanide leaching recovers approximately 9% of the silver and 17% of the gold which, when combined w...