High Metallurgical Test Recoveries For Copala Resource Area

VANCOUVER - Vizsla Silver Corp. reported positive preliminary metallurgical test results for the Copala Resource Area at the Panuco silver-gold project located in Mexico.

"Based on representative samples from Copala, the largest known structure in the Panuco district, we are pleased to report very high silver and gold recoveries," said, Michael Konnert, President & CEO. "This is a significant de-risking milestone for the Project and provides positive implications for the ongoing development of the Panuco district. Additionally, these results complement high silver and gold recoveries from the Napoleon and Tajitos resource areas using comparable grinding with both flotation and leaching methods independently. We intend to confirm through the next phase of metallurgical testing and additional flowsheet optimization that the mineralized material from all three primary zones, which make up the bulk of the current project resource base, is amenable to processing via the same flowsheet utilizing the same extraction circuits by testing the combination of flotation and cyanide leaching at both Napoleon and Tajitos."

The test program was designed and supervised by Ausenco Engineering Canada Inc. and completed by ALS Canada Ltd. out of Kamloops, BC. The testing procedure consisted of drill core being first crushed to -6 mesh and prepared into master composite test charges. A series of flotation tests were then conducted on the samples at primary grind sizes of between P80 70 to 150µm. Simple bulk flotation conditions were applied which included 18 g/t of PAX over 8 minutes of flotation time at natural pH. Precious metal recoveries to the concentrate ranged between 76 to 82% for gold and 78 to 85% for silver.

Flotation concentrate and tails were both subsequently leached using sodium cyanide to maximize gold and silver extraction. Flotation concentrates were subject following varying levels of regrinding prior to bottle roll leach tests using a sodium cyanide concentration of 3000 ppm. Pre-aeration was applied by bottle rolling the prepared feed slurries with ambient air prior to adding cyanide. Flotation tails were subject to bottle roll leach tests using a sodium cyanide concentration of 1000 ppm. Total circuit sodium cyanide consumptions averaged 1.3 kg/tonne for tests that included regrinding.

Gold and silver extractions from the flotation concentrates averaged 96.4 and 98.1%, respectively, for tests that employed regrinding compared with 93.6 and 92.7% without regrinding. Gold extractions appeared to be complete after 24 hours, while silver benefitted from extending the leach to 48 hours. Gold extractions from the rougher tails ranged between 77 and 82%, while silver extractions ranged between 48 and 67% after 48 hours of leaching. The higher extractions were achieved at the finer primary grind sizes.