华南成矿省东段金矿床地球化学找矿模型

发布时间：2018-02-09 12:59

本文关键词： 华南成矿省东段金矿找矿指示元素地球化学找矿模型　出处：《中国地质大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：华南成矿省东段是我国重要的金矿产地,区域内分布有许多大型、超大型金多金属矿床。本文选取了浙江遂昌治岭头金银矿床、福建上杭紫金山金铜矿床、广东高要长坑金银矿床和广东高要河台金矿床四个典型矿床作为研究对象,从矿床地质、1:20万水系沉积物、岩石地球化学三个方面研究华南成矿省东段典型金矿床地球化学找矿模型,在此基础上建立华南成矿省东段金矿床的地球化学找矿模型。浙江遂昌治岭头金银矿床为变质碎屑岩中热液型,矿体呈出露状态,受断裂构造控制,矿体形态为脉状、透镜状等,该矿床区域化探指示元素为Au、Bi、Pb、Zn、Ag、Hg、Ba、Zr、Th、U;岩石化探指示元素为Au、W、Mo、Cu、Pb、Zn、Ag、As。福建上杭紫金山金铜矿床为火山岩型,矿体呈出露状态,受断裂构造控制,矿体形态呈透镜状、脉状等,该矿床区域化探指示元素为Au、Ag、W、Sn、Mo、Bi、Cu、Pb、Sr、U;岩石化探指示元素为Au、Sn、Mo、Bi、Cu、Pb、Ag、As、F、Nb、U。广东高要长坑金银矿床为微细浸染型,矿体呈出露状态,受断裂构造控制,矿体形态呈似层状、透镜状等,该矿床区域化探指示元素为Au、Pb、Cd、Ag、As、Sb;岩石化探指示元素为Au、Mo、Cu、Pb、Zn、Cd、Ag、As、Sb、Hg、Ba、U。广东高要河台金矿床为岩浆热液型,矿体呈出露状态,受断裂构造控制,矿体形态呈层状、透镜状、扁豆状等,该矿床区域化探指示元素为Au、Sn、Bi、Hg、Be、B、Zr、U、Y;岩石化探指示元素为Au、W、Sn、Bi、Cu、Ag、As、Hg、Co、U。华南成矿省东段金矿床区域化探找矿指示元素组合为Au、Ag、Pb、Bi、U、Th,其中主成矿元素Au的异常等级大于5;伴生元素Pb、Ag的异常等级大于3;伴生元素Bi、Th、U的异常等级大于1。岩石化探找矿指示元素组合为Au、W、Sn、Mo、Bi、Cu、Pb、Zn、Cd、Ag、As、Hg、F、U共14项。其中主成矿元素Au的异常等级大于5,伴生元素Cu、Ag、Zn的异常都等级大于4;伴生元素Pb、Cd异常等级都大于3;伴生元素W、Mo、Bi和Hg异常等级都大于2;伴生元素Sn、As异常等级都大于在1;伴生元素F、U异常等级小于1。华南成矿省东段金矿床在区域化探和岩石化探中均存在异常的元素为Au、Ag、Bi、Pb、U。
[Abstract]:The eastern segment of South China metallogenic province is an important gold ore producing area in China. There are many large and super large gold polymetallic deposits in the area. In this paper, the gold and silver deposits in Zhiling Tou, Suichang, Zhejiang, and Zijinshan gold and copper deposits in Shanghang, Fujian, are selected. Four typical gold deposits in Gaoyao Changkeng Gold and Silver Deposit and Gaoliahetai Gold Deposit in Guangdong Province were studied. Geochemical Prospecting Model of typical Gold deposits in the Eastern part of South China metallogenic Province, On this basis, a geochemical prospecting model of gold deposits in the eastern segment of South China metallogenic province was established. The gold and silver deposit in Zhiling Tou, Suichang, Zhejiang Province, is of the hydrothermal type of metamorphic clastic rocks, the orebody is exposed, controlled by fault structure, and the orebody is vein-like. The regional geochemical prospecting indicator element of the deposit is Au-Bi-Bi-PbPbPbZn-Ag-HgPbAg-Hg-Hg-Zr-ThU, and the indicator element of petrogeochemical exploration is Autni-Wa-Mo-Cu-PbZn-Zn-Ag As.The Zijinshan gold deposit in Shanghang, Fujian Province, is of volcanic type, the orebody is exposed, controlled by fault structure, and the orebody is lenticular and vein-like, and so on, and the orebody is lenticular in shape and vein shape, and so on. The regional geochemical prospecting indicator elements of the deposit are Au-Ag-Ag-W-Sn-Mo-Li Bi-CuCuPb-Pb-Sr-U, and the petro-geochemical indicator element is Au-Sn-Mo-Mo-Bi-Cu-Pb-Pb-Pb-Nb-U. The gold and silver deposit in Gaoxiaozhengkeng, Guangdong Province, is of micro-disseminated type, the orebody is exposed, controlled by fracture structure, and the orebody is layered, lenticular, and so on, and the orebody is characterized by the structure of fracture, the structure of the orebody, the structure of the orebody, and so on. The regional geochemical prospecting indicator element of the deposit is Au-PbPbCCDAgAg-As-Sb, and the indicator element of petrogeochemical exploration is Au-Mo-Cu-Pb-PbCB-PbPbPbPbPbCZNZZNZNZHU SbSBU. The gold deposit in Gaodaihetai, Guangdong Province, is of magmatic hydrothermal type, the orebody is exposed, controlled by fault structure, the orebody is layered, lenticular, lentiform, and so on, the orebody is lenticular, and so on, and the ore deposit is of magmatic hydrothermal type. The regional geochemical prospecting indicator elements of the deposit are Au-SnSn-Bi-HgPg-BebbZr-UYand, and the petro-geochemical indicator elements are Au-W-Sn-Sn-Pb-AZON-AZON-AZO HGU CoU. The regional geochemical prospecting indicator element assemblage of gold deposits in the eastern segment of South China metallogenic province is AuAgPbBiBUUTh.The anomaly grade of the main ore-forming element au is greater than 5; the heterogeneity of associated element PbnAg is higher than that of the associated element Pbfg. The normal grade is greater than 3, and the anomaly grade of associated element Bio Thu is greater than 1. The indicator element assemblage of petrogeochemical prospecting is Auxinwo Sno. Moe. There are 14 items in total. The anomaly grade of main metallogenic element au is more than 5, and the anomaly grade of associated element is more than 4, and that of associated element is more than 4, and that of associated element is more than 4. The main metallogenic element au is more than 5, and the associated element is more than 4, and the associated element is more than 4, and the associated element is more than 4, and the main metallogenic element is more than 5. The anomalous grades of elemental Pb, CD, W, Mo, Bi and Hg are all greater than 2, the grades of associated elements are all greater than 1, and the grade of associated element FGU are less than 1. The regional geochemical exploration and lithology of gold deposits in the eastern section of South China metallogenic province. The elements with anomalies in the exploration are Au-Ag-Ag-Bi-PbCU.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.51

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