Blackrock Silver Corp. announced the results of its initial metallurgical test work on the Tonopah West high-grade, epithermal silver-gold vein system located along the prolific Walker Lane trend of Western Nevada. Results show that the silver-gold mineralization at the project appears to be amenable to standard cyanidation processing with average recoveries of 95% gold and 87% silver.

HIGHLIGHTS: Twelve composites from 6 of the veins on the Tonopah West project returned an average gold recovery of 95% and an average silver recovery of 87%; Gold recoveries range between 90% to 98%, and the silver recoveries range between 81% and 94%; The Merten vein, the largest vein in the DPB resource area, returned an average gold recovery of 96% and a silver recovery of 90%; The high-grade Bermuda vein yielded average recoveries of 93.5% for gold and 91% for silver; and The DPB maiden resource is on track for first quarter 2022. A total of twelve vein composites were assembled and delivered to Kappes and Cassidy (KCA) in Reno, Nevada. KCA completed cyanide bottle roll leach tests to test the initial metallurgical characteristics of the Tonopah West high-grade, epithermal silver-gold vein system.

A low- and high-grade composite was created for each of the Victor, Denver, Paymaster, Bermuda, Merten and Mule veins. The metallurgical test returned average recoveries 95% for gold, and 87% for silver. The gold recoveries range between 90% to 98%, and the silver recoveries range between 81% and 94%.

These test results compare favorably to the historic recoveries achieved in the Tonopah district when gold and silver were liberated using stamp mills.