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Boxxer announces preliminary metallurgical test work results
Boxxer announces preliminary metallurgical test work results
About this update from Exgen Resources Inc.
[{"type":"text","content":"\n\n\n\nNov. 12, 2009 (Canada NewsWire Group) -- CALGARY, Nov. 12 /CNW/ -- Boxxer Gold Corp. (TSX Venture: BXX) (\"Boxxer\" or the \"Corporation\") is pleased to announce the results of preliminary metallurgical test work completed on two representative samples of oxidized copper-gold mineralization from its 100%-owned Boss copper-gold property located in the Goodsprings Mining District in southwest Nevada.Leach Test Results:Un-optimized leach tests using a standard bottle roll methodology were performed to determine the metal recoveries using an acid leach for copper and subsequent cyanide leach for gold-silver-platinum-palladium. Results of the leach tests are as follows:a) Copper recovery during the first two hours of the leach tests was 90%in the Oro Amigo sample and 95.7% in the Boss Mine sample. As theleach test progressed, the copper in solution re-precipitated intothe residue of the acid leach stage and percentage copper recoverydeclined to 36.7% in the Oro Amigo sample and 35.2% in the Boss Minesampleb) Over a 24 hour period 92.2% of the gold, 79.9% of the palladium,45.4% of the platinum and 37.3% of the silver was recovered in theOro Amigo sample and 94.2% of the gold, 76.3% of the palladium, 50.1%of the platinum and 70% of the silver was recovered from the BossMine sample.Flotation Test Results:Based on the mineral suite present, conventional flotation of copper sulphides and carbonates into a concentrate would be the most logical process for extraction of copper. This process would also capture gold-silver-platinum-palladium as a by-product metal value in the concentrate. Results of the flotation tests are as follows:a) The rougher test results failed to recover significant amounts ofcopper, gold, platinum and palladium into a rougher concentrate. Thecopper recovery into the cumulative rougher concentrate averaged 25%for the Boss Mine sample and 36% for the Oro Amigo sample.b) Gold recovery averaged 32% for the Boss Mine sample and 43% for theOro Amigo sample, andc) Flotation does not appear to be an attractive process for metalrecovery. Significantly more development and study would be requiredto determine the causes of poor flotation performance.Mr. Elmer Stewart, President and CEO of Boxxer stated, \"We found that what seemed to be the most logical recovery process, the flotation method, was in fact inefficient co...