| 大新矿床构造地球化学分带及铀多金属成矿规律研究 |
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| 引用本文： | 李治兴,漆富成,何中波,张字龙.大新矿床构造地球化学分带及铀多金属成矿规律研究[J].国外铀金地质,2011(1):6-12. |
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| 作者姓名： | 李治兴 漆富成 何中波 张字龙 |
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| 作者单位： | 核工业北京地质研究院,中核集团铀资源勘查与评价技术重点实验室,北京100029 |
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| 摘 要： | 大新矿床产出于直接覆于上寒武统之上泥盆系间的构造破碎带中。笔者对该破碎带进行了详细地质调查和系统取样分析,研究表明,该破碎带发育从原岩带→碎裂岩带→构造泥→糜棱岩带→构造角砾岩带的构造地球化学分带规律。随着构造破碎带破碎程度的增强,U、Mo、As、Sb、Re和Tl等元素同步增高。铀多金属矿化对围岩无选择性,仅与破碎带的存在相关联,而且矿化程度与破碎强度呈同步消长关系,由此认为,大新矿床属于受构造破碎带控制的铀多金属热液矿床。
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| 关 键 词： | 大新矿床 构造地球化学分带 铀多金属成矿规律 构造破碎带控制 |
Study on structural geochemical zonation and uranium polymetallic metallogenic regularities of Daxin deposit |
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| Authors: | LI Zhi-xing QI Fu-cheng HE Zhong-bo ZHANG Zi-long |
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| Institution: | (CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology, Beijing Research Institute of Uranium Geology,Beijing 100029,China) |
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| Abstract: | Daxin deposit occurs in structural fractured belt in Devonian,which lies directly on Upper Cambrian.Through detailed geological survey and systematic analysis on samples,it is proven that the fractured belt may be divided in the structure and geochemistry as protolith zone→cataclasite zone→tectonic mud zone→mylonite zone→tectonic breccia zone.In the structural fractured belt,the stronger the fracture occurs,the higher content of elements will be,such as U,Mo,As,Sb,Re,Tl,etc.The uranium polymetallic mineralization is not related to wall rock,but associated with the existence of fractured belt.There is positive correlation between the mineralization degree and the fracture intensity.Therefore,it is considered that Daxin deposit belongs to uranium polymetallic hydrothermal deposit controlled by structural fractured belt. |
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| Keywords: | Daxin deposit structural-geochemical zonation uranium polymetallic metallogenic regularities structural fractured belt control |
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