摘要
通过野外地质调查、采样、室内显微镜下分析、扫描电镜、X衍射成分分析等,对贵州赫章铜厂沟矿化区的铜矿石进行了矿物组成、矿石类型划分等研究。矿石含铜品位为3.26%～3.88%,初步分为砂岩型铜矿石和蚀变构造角砾岩型铜矿石2类。采用ICP-MS测试5类代表性样品的微量元素含量,进而分析和探讨样品的稀土元素地球化学特征、飞仙关组砂岩的形成环境及矿化蚀变过程中稀土元素的迁移规律。综合各类样品的稀土元素和微量元素地球化学特征呈现继承性的特点,得出峨眉山玄武岩为铜矿成矿的矿源层,矿石属铜多金属矿石的结论。
The mineral composition and the types of the copper ores from Tongchanggou mine area, Hezhang, Guizhou were researched by field geological investigation, Sampling, microscopy observation, scanning electron microscope and X -ray diffraction. According to the results of analysis, the percentage of copper in the ores ranged from 3.26% to 3.88%, and the copper ores were preliminary divided into two types ,the one is sandstone type, and the other is altered structural breccia type. The content of trace elements in five kinds of representative sample were determined by ICP-MS test, the geochemical characteristics of REE in the samples, the forming environment of the sandstone of Feixianguan Formation, and the migration rule of REE in the procedure of mineralized alteration were analyzed and discussed.The geochemical characteristics of REE and trace elements in the comprehensive samples present characters of inheritance. It was concluded that the basaltic magma is the source bed of copper mineralization, and the copper ore is a polymetallic ore.
出处
《矿业研究与开发》
CAS
北大核心
2012年第4期39-42,共4页
Mining Research and Development
基金
国家自然科学基金项目(51164004)
贵州大学博士基金项目(X091017)
