摘要
山门银矿床围岩蚀变呈面型及线型分布,受岩性及构造控制。蚀变作用具有多期、多阶段性,蚀变矿物组合在时间上表现由复杂到简单,由高温到低温的演化特点,在空间上具有明显的分带现象。矿化与硅化、黄铁矿化、伊利石—绢云母化极为密切。文中探讨了不同蚀变岩段蚀变岩带化学成分变化、元素的带入以及微量元素,成矿元素由红化带到硅化带逐渐富集规律。
The wall-rock alteration Shows planar and linear type distribution controlled by the litholoyg and structures.The alteration shows polyphase activities; assemblage of the altered minerals indicates the evoluationary feature from complex to simple, from high to low in temperature, with clear zoning, the mineralization is closely related to silification, pyritization and grundite-sericitization, in this paper, variation of chemical composition of altered rock zone, migration of elements, regularity of enrichment and of the gradully metaltogenetic elements in different alteration stages.
出处
《吉林地质》
1992年第1期43-52,共10页
Jilin Geology
关键词
围岩蚀变
分带
成矿
银矿
Wall-rock alteration Zoning Geochemistry of altered-rock zone
