缅甸第四特区景缅金矿床元素地球化学特征及找矿预测

发布时间：2018-08-02 21:21

【摘要】：本论文研究课题来自导师何明友教授承担的中缅合作项目“缅甸第四特区景缅金矿区地质勘查”项目。试图通过本项研究,探讨金及其密切相关元素富集成矿的地球化学特征,圈定找矿靶区。为该区找矿潜力及找矿前景的定性评估提供数据支撑和科学依据。因此,本论文选题具有重要的科学研究意义和实际应用价值。本论文选择该金矿区为研究对象,紧密结合项目的研究任务,重点研究该金矿区的元素地球化学特征。分别采用1:5000土壤地球化学测量方法和岩石地球化学测量方法进行数据采集,根据X荧光仪和原子吸收法测试所得到的数据,运用SPSS和Sufer软件进行数据处理和相关分析,在此基础上圈定多元素地球化学异常和找矿靶区。研究内容包括:区域地质背景、矿床地质构造、成矿地质条件、找矿预测。通过上述研究,获得以下认识:1、土壤地球化学测量可作为该区重要有效的找矿方法,利用土壤地球化学测量方法可以快速缩小找矿靶区,为地质找矿提供较直接、可靠的找矿信息;2、因子分析结果表明,因子1(Ti、Ba、Co、Fe、Ni、Cr(Mn、Mo、Zr))贡献率为46.346%,代表岩浆信息,特别是铁族元素迁移信息;因子2(As、Pb、Bi、Hg)贡献率为20.372%,代表中低温热液等信息,也可能表现为断层信息;因子3(Sb、Sn、Cd)贡献率为10.388%,代表锡等多金属成矿信息(也可能为富Sn花岗岩信息);因子4(W、Zn、Cu(Ca))贡献率为6.428%,代表W、Zn、Cu等多金属成矿信息,且后期经历钙化地质作用。本区土壤地球化学找金矿的最佳指示元素为As、Pb、Bi、Hg,Ti、Ba、Co、Fe、Ni、Cr、Mn元素指示矿体意义不大;3、通过sufer软件对土壤测量的数据处理得到的单元素异常图和综合元素异常图可以发现三个异常区,其异常场强度较强,规模大,为最有希望地带,应将其作为重点勘查区,并据此圈定三个最有希望的找矿靶区。4、岩石测量数据表明Au、Ag在硅化岩中含量最高,作为金的指示元素,As在硅化岩中也含量最高,因子分析结果表明,Au-As-Bi,Ag-Bi-Zn,Cu-Sb-Pb-Bi组合相关性非常好。取得的成果如下:1.利用土壤和岩石元素分析数据,采用聚类分析、因子分析、累频法等进行数据处理,提取出了Au元素异常信息和圈定出了金异常场。并提出As、Hg、Bi、Pb可作为金的有效找矿标志的见解2.通过元素组合异常特征,结合成矿地质背景、控矿因素等,圈定出了三个主要找矿靶区。明确了该区今后的找矿方向。
[Abstract]:The research topic of this paper comes from the Sino-Myanmar cooperation project "Geological Prospecting of Jingmen Gold Mine area in the fourth Special Zone of Myanmar", which was undertaken by Professor he Mingyou. Through this study, the geochemical characteristics of gold and its closely related elements are discussed, and the ore-prospecting targets are delineated. It provides data support and scientific basis for the qualitative evaluation of prospecting potential and prospecting prospect in this area. Therefore, this thesis has important scientific research significance and practical application value. This paper chooses the gold ore area as the research object, closely combines the project research task, emphatically studies the element geochemistry characteristic of the gold deposit area. The data were collected by 1: 5000 soil geochemistry measurement method and rock geochemistry measurement method respectively. According to the data obtained by X-ray fluorescence instrument and atomic absorption spectrometry, the data processing and correlation analysis were carried out by using SPSS and Sufer software. On this basis, multi-element geochemical anomalies and prospecting targets are delineated. The research contents include: regional geological background, deposit geological structure, metallogenic geological conditions, prospecting and prediction. Through the above research, we can get the following understanding: 1. The geochemistry survey of soil can be used as an important and effective prospecting method in this area. By using the method of soil geochemistry survey, the prospecting target area can be quickly reduced and the geological prospecting can be provided more directly. The results of factor analysis show that the contribution rate of factor 1 is 46.346, which represents magmatic information, especially the information of iron group element migration, and factor 2 (AsPbPbPbBHG) contribution rate is 20.372.The contribution rate of factor 1 represents the information of medium and low temperature hydrothermal solution, and it may also be the information of fault, and it is also possible that the contribution rate of factor 2 is 20.372, and that the contribution rate of factor 2 is 20.372.The contribution rate of factor 1 is 46.346mg, and the contribution rate of factor 2 is 20.372.The contribution rate of factor 2 is 20.372. The contribution rate of factor 3 (SB ~ (2 +) is 10.388, which represents the information of polymetallic mineralization such as tin (or Sn-rich granite), and factor 4 (Ca) contribution rate of (Ca) is 6.42828), which represents the information of polymetallic mineralization such as WGZn-Cu, and has experienced calcification geological process in the later stage. The best indicator element for gold prospecting in soil geochemistry in this area is the indicating orebody of As-PbPbPbBiHgPbBiHgTiTi-BaCoCoFE-NiCr-Cr-Mn orebody. Three anomalous areas can be found from the single element anomaly map and the comprehensive element anomaly map obtained from the data processing of soil survey by sufer software. The anomalous field is the most promising area because of its strong intensity and large scale. It should be regarded as the key exploration area, and the three most promising prospecting target area .4 should be delineated accordingly. The rock survey data show that the Au-Ag content is the highest in silicified rocks. The results of factor analysis show that the association correlation of Au-As-Bi-Ag-Bi-ZZN Cu-Sb-Pb-Bi assemblage is very good. The results are as follows: 1. Using soil and rock element analysis data, cluster analysis, factor analysis and cumulative frequency method were used to process the data to extract the abnormal information of au element and delineate the gold anomaly field. It is also pointed out that as HgPb can be used as an effective prospecting marker for gold 2. According to the anomalous characteristics of element assemblage, metallogenic geological background and ore-controlling factors, three main ore-prospecting targets are delineated. The direction of prospecting in the area in the future is determined.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.51

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