摘要
介绍了代县金红石矿区地质背景和矿石特征,分析了前人对该矿床的成因认识。结合最新的锆石年代学和岩石地球化学研究,提出该金红石矿是由发生海水热液蚀变的基性岩石再经历中高压角闪岩相的变质作用形成。矿石中富Mg(Fe)和贫Ca(碱)的特征由水热蚀变引起。矿石中富Ti的特征主要继承自原始基性岩,并可能在热液蚀变过程中进一步富集。
In this paper, the authors introduced rutile mine geological background and characteristics of the Dai county, and analyzed the predecessors＇ understanding of the cause of the ore deposit. Combined with the latest zircon chronology and rock geochemical study, the authors proposed the rutile ore was formed by basic rock occurred by the sea hydrothermal al-teration and metamorphism of middle-high pressure amphibolite facies. Characteristics of rich Ore Mg （Fe） and poor Ca （al-kali） was caused by hydrothermal alteration. The characteristics of rich Ti mainly inherited from original basic rock, and pos-sibly further enriched in the process of hydrothermal alteration.
出处
《科技创新与生产力》
2014年第2期53-55,共3页
Sci-tech Innovation and Productivity
关键词
代县
金红石矿
成因认识
Dai county
rutile ore
genesis recognition
