【作者】 刘清泉；

【导师】 邵拥军；

【作者基本信息】 中南大学 ， 矿产普查与勘探， 2011， 硕士

【摘要】 山西辛庄金矿床位于华北地台北缘,晋东北恒山山脉中段南侧,是比较典型的脉状热液型金矿床。本论文运用金矿床矿床成因及成矿预测的理论和方法,对辛庄金矿床矿床地质特征、成矿地质条件及矿床成因进行了研究,分析了其成矿定位规律和矿脉产出的典型识别标志,并在构造地球化学、地球物理异常分析以及地表矿化信息提取的基础上进行了找矿预测研究。论文主要包括以下主要内容：对金矿床成因类型划分、成矿预测的基本理论和方法技术等方面进行了研究综述。对辛庄金矿床矿床地质特征进行了研究,重点解剖了1号脉的地质特征,分别从矿体的位置、形态、产状、规模和品位变化,矿石的结构、构造,围岩蚀变,成矿阶段方面进行了研究。探讨了矿床成矿地质条件,分别从矿区地层、构造以及岩浆岩与成矿的关系方面进行了讨论,认为矿区内具有较高金含量的五台群片麻岩地层可以作为矿源层；构造是成矿的重要的影响因素,控制了成矿岩体的侵位和矿体的形成和定位；燕山期岩浆岩是有利的成矿母岩。在对矿床成矿地质条件分析的基础上,对辛庄金矿床的矿体赋存规律和矿脉产出的主要识别标志进行了总结。在综合研究矿床地质特征和成矿地质条件的基础上,认为辛庄金矿床属典型的与燕山期中酸性岩浆侵入活动有关的中低温热液充填石英脉型金矿床。通过构造地球化学测量和数理统计分析,提出测区与金关系最密切的最佳成矿指示元素是Cu,最佳成矿指示元素组合为Au-Cu-Ag-Pb-Zn。在计算lgAuCuAgPbZn综合指数的基础上,圈定出6个主要的构造地球化学异常带。在上述基础上,总结了其地质、地球化学、地球物理方面有利的找矿依据和信息,提出了8个有望找矿预测单元,并对各单元的重要性进行了排序。更多还原

【Abstract】 Xinzhuang gold deposit in Shanxi province is located in the Northern Margin of North China Platform and the Hengshan mountain of Northeast Shanxi, which is typical vein hydrothermal gold deposit.The deposit geological features, the ore-forming geological conditions and the deposits genesis of Xinzhuang gold deposit were studied according to the genesis and prognosis theory and method of gold deposits. The location metallogenic regularity and typical recognition of vein of Xinzhuang gold deposit were analyzed. Prospecting targets were predicted on the base of tectononic geochemistry anomaly analysis.The main details in this paper are as follows:The classifying of metallogenesis types, the theory and method of the metallogenesis were summarized in the domestic and overseas situation of study.The deposit geological features were studied, geological features of vein-1 were dissected mainly. Orebody feature was studied from location, shape, occurrence, scale, and variation of grade of orebody, texture and structure of ores, wall rock alteration, ore-forming stages aspect.The ore-forming geological conditions were probed from the relationship between mineralization and stratum, structure, magma rock aspect. The gneiss stratum of high gold content in Wutai group greenstone belt is the source bed; The orebody was controlled by the structure which is the most important factor in mineralization; The magmatic rock of Yanshanian is the beneficial parent rock of mineralizing.The occurrence regularity of orebody and main sign of recognition of vein of Xinzhuang gold deposit were analyzed on the base of analysis of mineralizing geological conditions.Xin zhuang gold deposits is typical and yanshanian mediosilicic-acid magma intrusion activities related to the low temperature filling quartz vein type gold deposits on the base of comprehensively analyzing of geological characteristics of ore deposit and mineralizing geological conditions.According to tectononic geochemistry survey in Xinzhuang area and mathematical statistic analysis of data, the best ore-forming indicator elements is Cu, the optimal indicator elements combination are Au-Cu-Ag-Pb-Zn.6 Prime tectononic geochemistry anomalous belts were delimitated according to index of lgAuCuAgPbZn.The beneficial ore-prospecting information on geology, geochemistry and geophysics were summarized.8 prospecting targets positions were determined combining investigation and collection of the beneficial ore-prospecting information in survey area. The importance of prospecting targets was sequenced.更多还原