贵州关岭丙坝铜矿床地气微粒特征

发布时间：2018-07-15 17:01

【摘要】：为了查明地气微粒特征与隐伏矿体的关系,对贵州关岭丙坝铜矿床进行地气微粒采样,并用透射电子显微镜进行分析。研究结果表明:地气微粒存在形式有微粒聚合体和单个微粒,以微粒聚合体为主。单个微粒形态各异,有球状、板状、立方状、椭球状、条状、不规则状等,粒度一般在几纳米到300nm之间;微粒聚合体多呈链状、浑圆状、不规则状。微粒的元素组成与地下隐伏矿体具有较好的相关性,且发现较多微粒中含有高浓度的Fe、Mn、Pb、Zn等元素,这无疑对该矿区今后的地质找矿具有指导意义。此外,通过对比不同矿床的地气微粒特征,发现矿床类型不同,微粒的种类、成分、形态等特征有差异,但相同类型的矿床却具有较大相似性。矿床地气微粒特征与地下隐伏矿床具有较好相关性,在相似地质环境下形成的矿床微粒元素组成、大小大体上具有相似性,但其间的微粒组合、形态等仍会存在一定的差异性。因此,可以通过对隐伏金属矿床地气微粒特征的研究,建立不同矿床类型地气微粒特征模型。
[Abstract]:In order to find out the relationship between the characteristics of the earth gas particles and the concealed orebodies, the samples of the earth gas particles from the Guanling Proba copper deposit, Guizhou Province, were collected and analyzed by transmission electron microscope (TEM). The results show that there are two kinds of microparticles in the earth-air particles, which are particle polymer and single particle. Single particles have different shapes, such as globular, platelike, cubic, ellipsoid, stripe, irregular, etc. The particle size is generally between a few nanometers and 300nm, and the particle aggregates are mostly chained, rounded and irregular. There is a good correlation between the element composition of the particle and the underground concealed orebody, and it is found that more particles contain high concentration of Fe _ (mn) mn _ (Pb) Zn and other elements, which is undoubtedly of guiding significance for the geological prospecting in the future. In addition, by comparing the characteristics of earth gas particles in different deposits, it is found that there are differences in the types of deposits, the types of particles, composition, morphology and other characteristics, but the same types of deposits have greater similarity. There is a good correlation between the characteristics of the earth gas particles and the underground concealed deposits. The size and size of the particles formed in the similar geological environment are similar in general, but there are still some differences in the combination and morphology of the particles between them. Therefore, through the study of the characteristics of geogas particles in concealed metal deposits, a model of geogas particle characteristics of different types of deposits can be established.
【作者单位】： 中山大学地球科学与地质工程学院;广东省地质过程与矿床资源探查重点实验室;
【基金】：国家高技术研究发展计划“863”项目(2008AA06Z101)~~
【分类号】：P618.41

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