摘要
贵东岩体是一个铀成矿分区明显的岩体,东部产有花岗岩型铀矿床,西部则无铀矿化。区分铀成矿场和非成矿场的识别标志是一项既有实际价值又有理论意义的课题。本文基于大量的野外观测、室内鉴定资料和定量分析数据,研究了贵东岩体铀成矿区交代作用的种类、方式和演化,特别是其强度和能力,进而总结了该岩体铀成矿场蚀变交代作用的特性:交代作用发生的滞后性、交代方式的多样性、交代作用在空间分布上的叠置性、交代作用演化的规律性和交代作用的彻底性;指出贵东岩体交代作用与铀成矿作用有着密切的关系。交代作用特性和标志对寻找铀矿化具有重要意义。
The Guidong granitic body can be clearly divided into two parts by uranium mineralization,i.e.,the eastern part with a well-known granite-type uranium deposit and the western part without any known deposits. Therefore, it is of both practical value and theoretical significance to identify uranium ore fields from non-uranium ore fields. On the basis of field observations and indoor studies,this paper outlines the types, forms, evolution and, especially,the strength and ability of metasomatism in the Guidong granitic body.It is suggested that uranium mineralization is closely related to the metallization and metasomatism in the Guidong granitic body. Metasomatic characteristics and indications are of great significance to searching for uranium resources.
出处
《矿物岩石地球化学通报》
CAS
CSCD
2004年第2期100-104,共5页
Bulletin of Mineralogy, Petrology and Geochemistry
