| 金矿化过程中两个地球化学问题探讨 |
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| 引用本文： | 汪东波,邵世才,徐勇.金矿化过程中两个地球化学问题探讨[J].地球科学,1999,24(3):292-297. |
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| 作者姓名： | 汪东波 邵世才 徐勇 |
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| 作者单位： | [1]北京矿产地质研究所 [2]国家有色金属工业局 |
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| 基金项目： | 国家科技攻关项目,有色人才基金 |
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| 摘 要： | 论述了金矿化过程中的两个地球化学问题，即沉积喷流作用与金矿化的关系，金与铅锌矿化的关系，海底沉积喷流作用不仅能形成重要的贱金属硫化物矿床，而且也导致金的明显富集；大量的地球化学研究工作已识别出一些沉积喷流型金矿床，揭示出部分太古宙绿岩石带中的脉状金矿床与沉积喷流作用密切的时空关系。
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| 关 键 词： | 金矿床 铅锌矿床 沉积喷流 矿化过程 |
DISCUSSIONS ON GEOCHEMICAL PROBLEMS IN GOLD MINERALIZATION |
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| Wang Dongbo,Shao Shicai,Xu Yong.DISCUSSIONS ON GEOCHEMICAL PROBLEMS IN GOLD MINERALIZATION[J].Earth Science-Journal of China University of Geosciences,1999,24(3):292-297. |
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| Authors: | Wang Dongbo Shao Shicai Xu Yong |
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| Abstract: | Two geochemical problems in the process of gold mineralization are presented in this paper: the relation of the sedimentary_exhalation to the gold mineralization, and the separation of gold from lead_zinc mineralization. The submarine sedimentary_exhalation aids not only the accumulation of important base metal sulfide deposits, but also the distinctive concentration of gold. A great number of geochemical researches have been completed for the identification of some sedimentary_exhalation gold deposits. These researches have concluded that a close temporal and spatial relation occurs between the lode gold deposits in parts of Archaean greenstone belt and the corresponding sedimentary_exhalation. The concentration of gold and base metals in the massive sulfide deposit is the same as that in the modern oceanic_floor sulfide accumulation. The Au, As, Sb, B, W, Se, Te and Bi in the range of about 10 3-10 4 are concentrated in the lode gold deposit, but the base metals are slightly concentrated or actually diluted. In the specific geological and structural environment, the gold and lead_zinc are associated with each other. This paragenic relation can serve as the prospecting criteria. The difference between the chemical composition and the circulation way of the metallogenic fluid is a major reason for the lead_zinc paragenesis and separation. |
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| Keywords: | gold deposit lead_zinc deposit sedimentary_exhalation mineralization process |
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