| 湖南凤凰地区寒武系敖溪组汞及汞锌矿床控矿因素研究 |
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| 作者姓名： | 付胜云 |
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| 作者单位： | 湖南省地质调查院,长沙 410116 |
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| 基金项目： | 湖南省自然资源厅“湖南省矿产地质志编制(编号: 20180306)”及中国地质调查局“中国矿产地质志·湖南卷(编号: DD20190379)”项目联合资助 |
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| 摘 要： | 凤凰汞铅锌矿田位于湘黔汞矿带中部,寒武系敖溪组赋存多处沉积-热卤水改造型汞矿床(点)及汞锌矿床(点)。为了进一步寻找汞及汞锌矿,在充分收集前人资料、结合野外调研的基础上,总结敖溪组区域成矿地质条件、沉积相及沉积演化特征,深入研究敖溪组岩性岩相与汞锌成矿的关系。结果表明:敖溪组岩相古地理类型为斜坡相,汞矿及汞锌矿床(点)产于斜坡相并主要分布于陡坡与缓坡转折部位及两侧,侧向分布范围3～5 km;汞矿及汞锌矿体呈似层状、透镜状及囊状大致顺层产于敖溪组上段角砾状云岩、砾屑云岩内;与汞矿及汞锌矿化有关的蚀变类型主要为碳酸盐化,次为硅化。
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| 关 键 词： | 汞矿 汞锌矿 敖溪组 控矿因素 湖南凤凰 |
| 收稿时间： | 2018-08-01 |
Research on controlling factors of the mercury and mercury-zinc deposits in Cambrian Aoxi Formation of Fenghuang area,Hunan Province |
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| Authors: | FU Shengyun |
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| Institution: | Hunan Institute of Geological Survey, Changsha 410116, China |
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| Abstract: | Fehuang mercury-lead-zinc ore field is located in central Hunan-Guizhou mercury belt, and several sedimentary-hot brine mercury and zinc ore spots occurred in Cambrian Aoxi Formation. In order to further search for mercury-zinc deposits, the regional metallogenic geological conditions, sedimentary facies and sedimentary evolution of Aoxi Formation were summarized, and the relationship between lithologic lithofacies and mercury, lead-zinc mineralization of Aoxi Formation was deeply studied, on the basis of previous data and field investigation. The results show that paleogeographic type of the rock facies of Aoxi Formation is the slope facies. The mercury and mercury-zinc deposits distributed roughly along the layer in calcite alteration of broken breccia between fine to fine-grained dolomitic strata in the upper member of Aoxi Formation, with a lateral distribution range of about 3-5 km. The mercury and mercury-zinc ore bodies appear to be layered, lenticular and capsule-like in the rubble dolomites and clastic dolomites. The related alteration types are carbonation and silication. |
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| Keywords: | mercury deposits mercury-zinc deposits Aoxi Formation ore-controlling factors Fenghuang Hunan |
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