| Experimental Study on the Leaching of Gold from Greenstone |
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| 作者单位： | Liu Yushan，Zhang Guilan Institute of Mineral Deposits，Chinese Academy of Geological Sciences，Beijing and Tian Jun Changchun College of Geology，Changchun，Jilin |
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| 摘 要： | Experiments were conducted on the leaching of gold from greenstone by chloride solution under the temperature of 200—550℃ and the pressure of 60 MPa. During part of the experiments, the oxygen fugacity was controlled. The results show that the leaching rate of gold is related to temperature, composition of the solution, pH and oxygen fugacity. In the experiment with oxidative acidic solution, the leaching rate was up to 50％ or more. It is known that the leaching of gold is restricted by the reaction in which the gold is dissolved from the rock to form gold chloride complex. Therefore, the authors hold that the acidic chloride solution derived from granite magma has caused the remobilization-migration of gold from greenstone and its enrichment into ore.
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Experimental Study on the Leaching of Gold from Greenstone |
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| Authors: | Liu Yushan Zhang Guilan Institute of Mineral Deposits Chinese Academy of Geological Sciences Beijing and Tian Jun Changchun College of Geology Changchun Jilin |
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| Abstract: | |
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| Keywords: | leaching gold deposits greenstone |
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