| 热泉热液系统金的成矿地球化学研究 |
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| 关键词:boiling spring stream spring gold metallogenetic geochemistry microbral mineralization mineralization effect |
| 基金项目:国家自然科学基金,地质科技发展基金 |
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| 摘要: |
| Study on the Gold Metallogenetic Geochemistry in Hot Spring-Hydrothermal Systems |
| The Gold mineralizing actions and effect are expounded here based on the investigation of the geology , geochemistry , hydrothermal chemistry , microbe and organic matter of the gold mineralization bodies in the geothermal fields such as in Rehai , in Xiaotang, in Yangbajing and in Yangyingxiang field et al , and based on the test of microbial function . Gold mineralization happens in the hydrothermal fluids of nonequilibrium condition and of the unsaturation and unsteady state of the solute gold , the deposition gold is enriched in the amorphous and crystalline sulfide phases . There are different Au mineralization effect and characterizing mineralization bodies in the upflow zones and spring ponds of the boiling spring , stream spring and hot spring fluids ; reflecting the varied mineralizing actions . It is demonstrated that thermophilic microbe especially sulfate_reducing bacteria are the internal dynamic role which make the oxidation_reduction of - or [Au(S 2O 3) 2] 3- and Au_sulfide precipitation from the hydrothermal fluids. |
| LIU Bao-dan,LU Yuan-fa,XUE Tang-rong,BEI Feng.1998.Study on the Gold Metallogenetic Geochemistry in Hot Spring-Hydrothermal Systems[J].Acta Geoscientica Sinica,19(3):251-260. |
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