广西清明山铜镍硫化物矿床上升气流微粒研究

发布时间：2018-02-04 10:48

本文关键词： 铜镍硫化物矿床上升气流微粒隐伏矿床　出处：《岩石学报》2017年03期 　论文类型：期刊论文

【摘要】：为探讨上升气流微粒与深部隐伏矿体之间关系,在广西清明山铜镍硫化物矿床上方土壤中采集上升气流微粒,并采用透射电子显微镜(TEM)对微粒的形貌、大小、聚合状态、化学组分及结构等进行分析。结果表明,微粒主要由Cu、Co、Zn、Fe、Ca、Si、S等元素组成,其中成矿元素Cu、Co以自然Cu-Fe-Co、Zn-Fe-Co及Fe-Co合金微粒的形式存在,其余如Fe、Ca、Si、S等元素则以氢氧化物、氧化物及碳酸盐微粒形式存在。微粒可分为微粒聚合体及单个微粒,微粒的大小为50~500nm,微粒的形状多为不规则状、近椭圆形、近球状、水滴状和近长方体等。微粒中高含量的Cu、Co、Zn来源于深部隐伏矿体,含Fe、S微粒来源于矿床中金属硫化物矿物。此外,高价态的微粒组分指示微粒处于相对氧化的环境。清明山铜镍硫化物矿床的上升气流微粒组分与矿床矿物组分间存在着较好的对应性,本研究为隐伏铜镍硫化物矿床提供了新的找矿方法。
[Abstract]:In order to study the relationship between the updraft particles and the deep concealed orebodies, the updraft particles were collected from the soil above the Cu-Ni sulfide deposit in Pure Brightness Mountain, Guangxi, and the morphology of the particles was observed by transmission electron microscope (TEM). The size, polymerization state, chemical composition and structure of the particles were analyzed. The results show that the particles are mainly composed of Cu, Cu and so on. The Co exists in the form of natural Cu-Fe-Co-Zn-Fe-Co and Fe-Co alloy particles, while the other elements such as Fetio CaSiN S are hydroxides. Oxide and carbonate particles exist. The particles can be divided into a particle polymer and a single particle, the size of the particle is 50 ~ 500 nm, the shape of the particle is mostly irregular, near ellipse, near globular shape. Water droplets and near cuboids, etc. The high content of Cu-CoCo-Zn in the particles originates from the deep concealed orebodies, while the FES particles originate from the metallic sulphide minerals in the deposits. The high valence particle composition indicates that the particles are in a relatively oxidized environment. There is a good correspondence between the updraft particle composition of the Pure Brightness mountain copper and nickel sulphide deposit and the mineral component of the deposit. This study provides a new prospecting method for concealed copper-nickel sulfide deposits.
【作者单位】：中山大学地球科学与工程学院;广东省地质过程与矿产资源探查重点实验室;
【基金】：国家高技术研究发展计划(“863”计划)项目(2008AA06Z101) 国家自然科学重点基金项目(41030425)联合资助
【分类号】：P618.41;P618.63
【正文快照】： 近年来,我国对矿产资源的需求呈现出快速增长的趋深部隐伏矿床勘探成为重点,寻找有限的资源需要更有效的势,从地表或浅部开采矿产资源已不能满足国民生产需求,方法。20世纪80年代瑞典科学家Kristiansson和Malmqvist 提出地气测量寻找深部隐伏矿体新技术,该技术的原理主要矿床

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