安徽石门庵金矿原生晕特征及深部找矿预测

发布时间：2018-02-05 21:38

本文关键词： 原生晕地球化学特征深部找矿预测石门庵金矿安徽　出处：《中国地质大学(北京)》2016年硕士论文　论文类型：学位论文

【摘要】：前人研究表明,原生晕找矿法是确定矿体剥蚀程度、找寻隐伏矿体、深部找矿预测最为有效的方法之一。安徽石门庵金矿是一个浅成低温热液型矿床,原生晕找矿法目前应用于这一类型金矿已经较为成熟可靠。目前,石门庵金矿处于普查阶段,而西冲矿段所做工作较少,使用原生晕法指导找矿工作还没有开展。因此,我利用原生晕的方法对该矿段进行找矿深部预测,为我部在该矿区开展勘查工作及今后的资源潜力评价提供科学依据和理论支持。多项数理统计分析以及矿区相关的资料研究表明:307号矿体原生晕找矿的主要指示元素为As、Sb、Mo、W、Au、Ag、Pb、Zn、Cu;前缘晕指示元素为As、Sb;近矿晕指示元素为Au、Ag、Cu、Pb、Zn;尾晕指示元素为W、Mo。采用格里戈良分带指数法,分别计算出10、18、26号勘探线原生晕轴向分带序列,根据相关性分析、聚类分析和因子分析等数理分析结果调整分带序列。得到10线分带序列为W-Mo-Zn,Sb,As-Cu-Au-Ag-Pb;18线分带序列为Pb-Ag-Au-Cu,Mo-Sb-As,Zn-W;26线分带序列为As-W-Mo-Sb,Zn-Ag,Au-Pb-Cu;307号脉原生晕轴向分带序列如下为W-Mo,Zn-Ag,Au-Sb-As-Cu-Pb。由于307号脉分带序列中出现明显的原生晕反分带现象,在序列尾部出现部分前缘晕元素,序列上部出现部分尾晕元素,说明矿体并非是单一期次形成的。根据石门庵矿区307号矿脉的地质特征及原生晕分带序列特征,结合10、18、26线原生晕分带序列特征和原生晕地球化学参数特征,建立了原生晕叠加理想模型,并进行了深部成矿预测。推测307号矿脉矿脉向下仍有较大延伸,具体体现为10线、26线矿体向下延伸,18线矿体向下延伸可能性不大。建议下一步进行工程验证。
[Abstract]:The previous studies showed that the primary halo prospecting method is to determine the denudation extent of orebodies, find hidden orebody, one of the effective methods for the prediction of deep ore prospecting in Anhui. Shimen: gold deposit is an epithermal deposit, primary halo prospecting method currently used in this type of gold has been more mature and reliable at present. Um, Shimen gold in the prospecting stage, Xichong mine does less work, the use of primary halo method to guide the prospecting work has not been carried out. Therefore, I use the method of primary halo prospecting prediction of the deep ore section, for our department in the mining exploration and evaluation and future potential to provide resources a scientific basis and theoretical support for the study of the relevant materials. A number of statistical analysis showed that the main indicator elements and mining of No. 307 orebody of primary halo prospecting for As, Sb, Mo, W, Au, Ag, Pb, Zn, Cu; front halo indicator element as As, near ore halo refers to Sb; Shows the elements of Au, Ag, Cu, Pb, Zn; the tail halo elements W Mo. with instructions, Grigorian zoning index, calculate the 10,18,26 exploration line primary halo zoning sequence, according to correlation analysis, cluster analysis and factor analysis of mathematical analysis results to adjust zoning sequence of 10 lines. The zoning sequence is W-Mo-Zn, Sb, As-Cu-Au-Ag-Pb; 18 line zoning sequence is Pb-Ag-Au-Cu, Mo-Sb-As, Zn-W; 26 line zoning sequence is As-W-Mo-Sb, Zn-Ag, Au-Pb-Cu; 307 primary halo vein axial zonality sequence are as follows W-Mo, Zn-Ag, Au-Sb-As-Cu-Pb. as the No. 307 vein zoning sequence of primary halo emerged in the back with the phenomenon, part of the front halo elements in the upper part of the tail sequence, the sequence of the tail halo elements, is not a single period. According to the geological characteristics and the formation of primary halo in Shimen: Mining Area No. 307 vein banding sequence features, combined with the native 10,18,26 line Halo zoning sequence and halo geochemical parameters, established the ideal model of primary superimposed halo, and the deep ore prediction. No. 307 vein vein that there is still a large downward extension, embodied in the 10 line, 26 line the downward extension of line 18 orebody extends downward is unlikely. Suggestions for engineering verification the next step.

【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】：2016
【分类号】：P618.51

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