云南漾濞富恒金多金属矿区外围土壤地球化学特征及找矿预测研究

发布时间：2018-03-06 18:49

本文选题：土壤地球化学　切入点：金多金属矿床　出处：《昆明理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：本论文在对前人研究资料系统收集和分析的基础上,总结了云南省漾濞县富恒金多金属矿区外围成矿地质背景和成矿条件。通过矿区1：10000地质图修测和1：10000土壤地球化学测量研究,对该矿区地质、土壤地球化学异常特征进行了深入研究,圈定找矿靶区。研究表明,矿区Au含矿层位复杂,受构造控制明显,矿化类型以构造破碎带型为主,围岩蚀变主要有硅化、褐铁矿化、黄铁矿化和碳酸盐化,金基本上以自然金形式存在。元素地球化学参数统计显示,Au、Sb、As、Hg、Pb、Cu、Ag元素含较高,含量变异系数最大的元素为Au,其次为Pb；元素浓集比率最大的元素为Hg,其次为Sb。综合变异系数、浓集比率指标,浅表矿化规模最大的是Hg,其次为Au,反映了本区是金、汞矿产的找矿有利地段。因子分析表明,Au、Sb、As、Hg、Pb、Cu、Ag元素代表成矿元素次生富集组合,可作为本区主要的找矿指示元素；元素分布型式显示,Au、Sb、As、Hg、Pb、Cu、Ag元素分布范围广,离散度大,反映了这些元素具有较强的次生富集趋势。矿区Au、Sb、As、Hg单元素异常显著,根据异常套合情况,结合矿区地质特征,探获甲1类异常1个(母岩子异常)、乙3类异常1个(白白摩异常)、丙类2个(干鹿塘异常、长寿村南异常)。根据土壤地球化学异常特征,结合地质条件,圈定3个找矿靶区,即：白白摩、干鹿塘和母岩子金矿找矿靶区。
[Abstract]:Based on the systematic collection and analysis of previous research data, this paper summarizes the metallogenic geological background and metallogenic conditions of Fuhengjin polymetallic ore area in Yangbi County, Yunnan Province. The geological and soil geochemical anomaly characteristics of the mining area are studied in depth, and the ore-prospecting target area is delineated. The results show that the au ore-bearing horizon in the mining area is complex, controlled by structure obviously, and the mineralization type is mainly structural broken zone type. The main alteration of surrounding rock is silicification, limonitization, pyrite and carbonization, and gold basically exists in the form of natural gold. The elements with the largest coefficient of variation in the content of the elements are au, followed by Pb, and the elements with the highest concentration ratio of elements are Hg, followed by SB. The comprehensive coefficient of variation, the index of concentration ratio, the largest scale of superficial mineralization is Hg, and the second is Au. which reflects the gold content in this area. The factor analysis shows that the elements of Au-SbSbSbAsHgPbPb-Cu-Ag represent the secondary enrichment assemblage of ore-forming elements, and can be used as the main ore-prospecting indicator elements in this area, and the distribution pattern of the elements shows that the elements of Au-SbSbSbSbAsHgHgPbPbPb-Cu-Ag are widely distributed in a wide range and have a wide range of dispersion. The results show that these elements have a strong tendency of secondary enrichment. One type A anomaly (mother rock anomaly), one type B anomaly (baimo anomaly) and two type C anomaly (Ganlutang anomaly, Changshoucun South anomaly) are found. According to the characteristics of soil geochemical anomalies and geological conditions, three ore-prospecting target areas are delineated. Namely: Baimao, Ganlutang and mother Yanzi gold prospecting target area.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P632.1;P618.2

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